6x GPU Capable Mining Rig Motherboards ... - Bitcoin Insider

Review of Antminer S9 / Antminer L3+ / 6x GPU Mining Rig – Bitcoin, Litecoin, Ethereum

Review of Antminer S9 / Antminer L3+ / 6x GPU Mining Rig – Bitcoin, Litecoin, Ethereum submitted by Rufflenator to 3bitcoins [link] [comments]

Review of Antminer S9 / Antminer L3+ / 6x GPU Mining Rig – Bitcoin, Litecoin, Ethereum

Review of Antminer S9 / Antminer L3+ / 6x GPU Mining Rig – Bitcoin, Litecoin, Ethereum submitted by ososru to Bitcoin4free [link] [comments]

18 P106-100 & 1 P104-100 Mining Rig Build

18 P106-100 & 1 P104-100 Mining Rig Build

19 GPU Build with ASUS B250 Mining Expert - 470MH/s

Its my dream to achieve and build a mining rig of this extent.
Allow me to describe this journey of mine to the GPU mining community.
Kudos to all! Feel free to ask me questions and I would love to help you out.

2017 - Bull Market - Dipped my toes into the GPU mining market. Spent nearly 3k USD, 6x GTX 1060 3GB & 2x GTX 1070ti.

Back then, my setup was really simple, An ASUS B250 Mining Expert with Pentium G4400, 8GB of RAM, 2 PSU (Coolermaster 700w as well as a V1200W PSU)
Placed this entire setup on a DIY metal shelf
Bought extra 2 GTX 1060 3GB on my Ryzen 7 1700 setup back then. Mining Monero too on Cryptonight Algo. Really profitable on these 2 rigs combined. Earning approximately 35USD per day at the peak :)
Without much experience back then, my overclocking skills sucks. I was drawing a ton of power with very little efficiency. However, at that point I was literally making few hundreds every month. It has been a really wonderful journey until bear market hits.

2018 - Nicehash Hacked, Bitconnect & Bear Market Hits...

If you still remember the dreadful hack of Nicehash. One morning I woke up seeing that my rig was no longer mining. Saw my balance turned to zero. And the moment I saw this article, my heart sanked. With over 100 USD inside my account that point, I knew I wouldnt be able to pay for my electric that month. This pulled down my confidence but quite a little.
Still remember Bitconnect? Hahahaha well entered into this ponzi scheme too. Invested 100 USD into this, got it back and donated the money.
Disconnected my entire rig... It was a pretty sad moment :\")
My house became cooler, quieter and my power usage instantly went down.
Kept 1 GTX 1070ti & 1 GTX 1060 3GB and built myself a Ryzen 7 gaming computer hehe.

My disconnection from Crypto 2018-2019

I exited this market back at the very end of the bull run and never touched Bitcoin until 2019. I began to plan my future, created an investment portfolio where I finally included Bitcoin back into my high risk asset class. The resurgence of Bitcoin mining begans :)

2019 - Sold my Ryzen 7 1700 & MB for ASUS B250 Mining Expert with 19 GPU build in mind

It all started with my small mining rig of one ZOTAC GTX 1070ti as well as an ASUS B250 Mining Expert which I was using to mine Ethereum at 33MH/s, get paid 0.05eth approximately every 2 weeks on 2miners.com

Purchased 2 more GTX 1070ti, bringing my total hashrate to 130MH/s.
Revamped & Redesigned into a DIY rig. Didnt wanna spend the money to find a frame hehe decided to use my mums shoe rack instead HAHAHAH
Back then, 1 GTX 1070ti resale value was approximately 230 USD here in Singapore.
Calculated hash per dollar and I notice the insane price I was paying with my 1070tis.
Sold all 4 of my GTX 1070tis and manage to trade for the following cards:
  • x4 Gigayte RX 570 8GB cards @ 70USD
  • x1 Sapphire Nitro RX 570 8GB @ 85USD
  • x5 P106-100 6GB cards @ 63USD
4 Gigabyte RX 570, 1 Sapphire RX 570, 5 P106-100 6GB
With all the skills and experience I have accumulated in 2017, I began redesigning my entire 10 GPU setup. This was the end product of my 10 GPU mining rig consisting of 5 NVIDIA P106-100 6GB cards as wel as 5 AMD RX 570 8GB cards. Working fine alongside with one another as claimed by ASUS.
Hashrates:
  • NVIDIA P106-100 6GB: 24.8MH/s @ 85watts
  • AMD RX 570 8GB: 29MH/s @ 95watts

DEAL OF THE MONTH - ZOTAC P106-100 6GB @ 56 USD

The dream of building 19 cards were never off my brain. Been sourcing for cheaper 2nd hand cards and snap! 56 USD per card for ZOTAC P106-100. It was insanely a great deal. Sold my 5x RX 570 8GB, use the cash and baammm!
Got 8 ZOTAC P106-100 6GB (2 not in photo) for test. PERFECT CONDITION and I cant believe the speed I was getting in Ethereum. 450MH/S for 18x P106-100 6GB

2ND DEAL OF THE MONTH - P104-100 8GB @ 70 USD

Managed to achieve 35.9MH @ 124w. Bringing my total GPU to 19.

The screen all miners with B250s love to see :)
The entire setup of my 19 GPU rig. Fan is blowing at single direction, expelling all the hot air towards my door exit. Keeping my living room relatively cool.

Underclocked my rig to 466MH for better stability and power draw. Has been running fine for 2 weeks without any manual interventions.
Bought a HP 1200w PSU. Placed a 120mm fan on top of it to keep it cool. In case if you are asking how loud is it, actually its pretty quiet. I have only used 600w, half of the capacity. Hence, under full load I am not sure how loud it will be.

All in all, my journey of a 19 GPU build. Feel free to ask me any questions :)
submitted by amtf99 to gpumining [link] [comments]

[USA-IL][H]Super Micro Server w/10x4TB WD Reds, 6U GPU mining chassis, Lian Li PC-06s case, EVGA Supernova 1600w PSU, some free stuff[W] PayPal, Local Cash

UPDATE:
ORIGINAL: Timestamps: https://imgur.com/a/KtaDdY6

Qty Item Price
1 Supermicro SC846 Dual Xeon e5-2650v3 Custom Server w/10x 4TB Reds, 24x drive sleds $800 OBO Local Cash
1 0 Lian Li PC-06S includes screws and rubber HDD mounts, etc etc. Made a minor mod to the case to fit AIO at the top. $100 + shipping/packaging, local preferred
1 0 EVGA Supernova 1600 G2 PayPal $200 shipped OBO
1 0 Pentium core i3-7100 w/cooler free + shipping
2 0 (cooler & box only) Ryzen 7 2700x free + shipping
1 6U GPU Bitcoin Mining Rig Server Case – w/6 Chassis fans w/dropdown backplate, 6x PCI-E 16x to 1x Risers & USB cables $100 + shipping/packaging, local preferred
1 Server in 10 bay Rosewill Chassis Local/Cash only
Supermicro SC846 Dual Xeon e5-2650v3 Custom Server
Everything is in Excellent Physical and Working Condition. Drives were powered on 24/7 from
Parts List Description
Supermicro SC846 Chassis (24 bay) Includes all 24 drive sleds
Supermicro PDB Upgraded Power distributor board for dual CPU
Supermicro 920w Super Quiet The regular PSU is too loud so upgraded
2x Intel Xeon e5-2650v3 Dual engineering samples 10c/20t each
2x Noctua NH-U9DXi4
4x 8GB Samsung DDR4-2133 REG ECC 32GB REG ECC Memory perfect for ZFS
3x LS 9211-8i Flashed to IT firmware
5x Noctua AF-A8 PWM Upgraded chassis fans to Noctuas
10 x WD 4TB Red (not shucked) Purchased 11-2014 from Newegg/Amazom
1x NvidiaGT 1030

EVGA Supernova 1600 G2
Standard cables:
Extra Cables:
submitted by november84 to hardwareswap [link] [comments]

I literally have tens of thousands of dollars in top-shelf hardware, looking to repurpose some before selling on eBay to build a NAS system, possibly a dedicated firewall device as well. o_O

Q1) What will you be doing with this PC? Be as specific as possible, and include specific games or programs you will be using.**

A1) This will be a dedicated NAS system for my home network. As such, I'm looking to have it:

- Host ##TB's of 720, 1080 & up resolution Movies and TV Shows I'm about to begin ripping from a MASSIVE DVD & Blueray collection I have.

- My kids are big on Minecraft. I understand it's possible to host your own "worlds" (or whatever they call the maps you can build) on your own "server". I think it would be pretty neat to offer them (& their friends - if can be done 'safely/securely') their own partition on one of my NAS HDD's.

- I also have accounts with a couple diff VPN companies... I understand it's possible (?) to sync said VPN's with a NAS, this might be a more relative topic on the next point/purpose...

- I'd like to be able to remotely link to this NAS for when I travel overseas and want to stream at my temp location from my house/this NAS.
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Q2) What is your maximum budget before rebates/shipping/taxes?**

* A2) Here's where I make matters more complicated than most others would... I've been an advocate for Bitcoin and crypto-currencies in general since 2013. I invested in a small mining outfit back in 2014 (strictly Bitcoin/ASIC's). One of my buddies is the President of a large-scale mining operation (foreign and domestic) and he convinced me to dabble in the GPU mining-space. I made my first hardware purchase in Q4, 2017 and launched a small-scale GPU-Farm in my house since then. I had the rigs mining up until Q3 of 2018 (not cost-efficient to keep on, especially living in SoFlo) and since then, the hardware's been collecting dust (& pissing off my family members since they lost access to 3X rooms in the house - I won't let anyone go near my gear). One of my New Years Resolutions for 2019 was to clear out the house of all my mining equipment so that's all about to go up on eBay. So "budget" is relative to whatever I "MUST" spend if I can't repurpose any of the parts I already have on hand for this build... (Anyone having something I "need" and is looking to barter for one of the items I'll list later on in here, LMK).
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Q3) When do you plan on building/buying the PC? Note: beyond a week or two from today means any build you receive will be out of date when you want to buy.**

A3) IMMEDIATELY! :)
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Q4) What, exactly, do you need included in the budget? (ToweOS/monitokeyboard/mouse/etc\)**

A4) Well I had a half-assed idea approximately 1 year ago that it might be wise to build a bunch of 'gaming rigs' to sell on eBay with my intended repurposed mining hardware so I went on a shopping spree for like 6 months. That said; I've got a plethora of various other components that aren't even unboxed yet. 90% of the items I've purchased for this additional project were items that were marked down via MIR (mail-in-rebates) & what-not...
AFAIK, there are only 3X items I absolutely do not have which I 'MUST' find. Those would be - 1) Motherboard which accepts "ECC RAM". 2) CPU for said MOBO. 3) Said "ECC RAM".\* 
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Q5) Which country (and state/province) will you be purchasing the parts in? If you're in US, do you have access to a Microcenter location?**

A5) I'm located in Southwest Florida. No Microcenter's here. Best Buy is pretty much my only option although I am a member of Newegg, Amazon & Costco if that makes any difference?
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Q6) If reusing any parts (including monitor(s)/keyboard/mouse/etc), what parts will you be reusing? Brands and models are appreciated.**

A6) In an attempt to better clean up this Q&A, I'm going to list the items I have on-hand at the end of this questionnaire in-case passers-by feel like this might be a TLDR.* (Scroll to the bottom & you'll see what I mean).
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Q7) Will you be overclocking? If yes, are you interested in overclocking right away, or down the line? CPU and/or GPU?**

A7) I don't think that's necessary for my intended purpose although - I'm not against it if that helps & FWIW, I'm pretty skilled @ this task already (it's not rocket science).
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Q8) Are there any specific features or items you want/need in the build? (ex: SSD, large amount of storage or a RAID setup, CUDA or OpenCL support, etc)**

A8) As stated in A4; ECC RAM is non-negotiable... RAID seems like a logical application here as well.

- This will predominantly be receiving commands from MacOS computers. I don't think that matters really but figured it couldn't hurt to let you guys know.\*

- I'd also be quite fond of implementing "PFSENSE" (or something of that caliber) applied to this system so I could give my Netgear Nighthawks less stress in that arena, plus my limited understanding of PFSENSE is that it's ability to act as a firewall runs circles around anything that comes with consumer-grade Wi-Fi routers (like my Nighthawks). Just the same, I'm open to building a second rig just for the firewall.\*

- Another desirable feature would be that it draws as little electricity from the wall as possible. (I'm EXTREMELY skilled in this arena. I have "Kill-A-Watts" to test/gauge on, as well as an intimate understanding of the differences between Silver, Gold, Platinum and Titanium rated PSU's. As well as having already measured each of the PSU's I have on-hand and taken note of the 'target TDP draw' ("Peak Power Efficiency Draw") each one offers when primed with X amount of GPU's when I used them for their original purpose.\*

- Last, but not least, sound (as in noise created from the rig). I'd like to prop this device up on my entertainment center in the living room. I've (almost) all of the top-shelf consumer grade products one could dream of regarding fans and other thermal-related artifacts.

- Almost forgot; this will be hosting to devices on the KODI platform (unless you guys have better alternative suggestions?)
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Q9) Do you have any specific case preferences (Size like ITX/microATX/mid-towefull-tower, styles, colors, window or not, LED lighting, etc), or a particular color theme preference for the components?**

A9) Definitely! Desired theme would be WHITE. If that doesn't work for whatever reason, black or gray would suffice. Regarding "Case Size". Nah, that's not too important although I don't foresee a mini-ITX build making sense if I'm going to be cramming double digit amounts of TB in the system, Internal HDD's sounds better than a bunch of externals plugged in all the USB ports.
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Q10) Do you need a copy of Windows included in the budget? If you do need one included, do you have a preference?**

A10) I don't know. If I do need a copy of Windows, I don't have one so that's something I'll have to consider I guess. I doubt that's a necessity though.
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**Extra info or particulars:*\*

AND NOW TO THE FUN-STUFF... Here's a list of everything (PARTS PARTS PARTS) I have on-hand and ready to deploy into the wild &/or negotiate a trade/barter with:

CASES -
Corsair Carbide Series Air 540 Arctic White (Model# Crypto-Currency-9011048-WW) - (Probably my top pick for this build).
Cooler Master HAF XB EVO (This is probably my top 1st or 2nd pick for this build, the thing is a monster!).
Cooler Master Elite 130 - Mini ITX - Black
Cooler Master MasterBox 5 MID-Tower - Black & White
Raidmax Sigma-TWS - ATX - White
MasterBox Lite 5 - ATX - Black w/ diff. Colored accent attachments (included with purchase)
NZXT S340 Elite Matte White Steel/Tempered Glass Edition
EVGA DG-76 Alpine White - Mid Tower w/ window
EVGA DG-73 Black - Mid Tower w/ window (I have like 3 of these)

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CPU's -
***7TH GEN OR BELOW INTEL's ("Code Name Class mentioned next to each one)**\*
Pentium G4400 (Skylake @54W TDP) - Intel ARK states is "ECC CAPABLE"
Celeron G3930 (Kaby Lake @ 51W TDP) - Intel ARK states is "ECC CAPABLE" :)
i5 6402P (Skylake @65W TDP) - Intel ARK states is "NOT ECC CAPABLE" :(
i5 6600k (Skylake @ 91W TDP) - Intel ARK states is "NOT ECC CAPABLE" :(
i7 6700 (Skylake @ 65W TDP) - Intel ARK states is "NOT ECC CAPABLE" :(
i7 7700k (Kaby Lake @ 95W TDP) - Intel ARK states is "NOT ECC CAPABLE" :(


***8TH GEN INTEL's **\*
i3-8350K (Coffee Lake @91W TDP) - Intel ARK states is "ECC FRIENDLY" :)
I5-8600K (Coffee Lake @95W TDP) - Intel ARK states is "NOT ECC CAPABLE" :(


***AMD RYZEN's **\*
Ryzen 3 2200G
Ryzen 5 1600
Ryzen 7 1700X

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MOTHERBOARDS -

***7TH GEN AND BELOW INTEL BASED MOBO'S - **\*
MSI Z170A-SLI
ASUS PRIME Z270-A
ASUS PRIME Z270-P
ASUS PRIME Z270-K
EVGA Z270 Stinger
GIGABYTE GA-Z270XP-SLI
MSI B150M ARCTIC
MSI B250M MICRO ATX (PRO OPT. BOOST EDITION)

***8TH GEN INTEL BASED MOBO'S - **\*
EVGA Z370 FTW
GIGABYTE Z370XP SLI (Rev. 1.0)
MSI Z370 SLI PLUS


***AMD RYZEN BASED MOBO'S - **\*
ASUS ROG STRIX B350-F GAMING
MSI B350 TOMAHAWK
MSI X370 GAMING PRO
ASROCK AB350M PRO4
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RAM -

Way too many to list, nothing but 4 & 8GB DDR4 sticks and unfortunately, none are ECC so it's not even worth mentioning/listing these unless someone reading this is willing to barter. At which time I'd be obliged to send an itemized list or see if I have what they're/you're specifically looking for.\*
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THERMAL APPLICATIONS/FANS -
JUST FANS -
BeQuiet -
Pure Wings 2 (80mm)
Pure Wings 2 (120mm)
Pure Wings 2 (140mm)
Silent Wings 3 PWM (120mm)

NOCTUA -
PoopBrown - NF-A20 PWM (200mm) Specifically for the BIG "CoolerMaster HAF XB EVO" Case
GREY - NF-P12 Redux - 1700RPM (120mm) PWM
Corsair -
Air Series AF120LED (120mm)

CPU COOLING SYSTEMS -
NOCTUA -
NT-HH 1.4ml Thermal Compound
NH-D15 6 Heatpipe system (this thing is the tits)

EVGA (Extremely crappy coding in the software here, I'm like 99.99% these will be problematic if I were to try and use in any OS outside of Windows, because they barely ever work in the intended Windows as it is).
CLC 240 (240mm Water-cooled system
CRYORIG -
Cryorig C7 Cu (Low-Profile Copper Edition*)

A few other oversized CPU cooling systems I forget off the top of my head but a CPU cooler is a CPU cooler after comparing to the previous 3 models I mentioned.
I almost exclusively am using these amazing "Innovation Cooling Graphite Thermal Pads" as an alternative to thermal paste for my CPU's. They're not cheap but they literally last forever.

NZXT - Sentry Mesh Fan Controller
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POWER SUPPLIES (PSU's) -
BeQuiet 550W Straight Power 11 (GOLD)

EVGA -
750P2 (750W, Platinum)
850P2 (850W, Platinum)
750T2 (750W, TITANIUM - yeah baby, yeah)

ROSEWILL -
Quark 750W Platinum
Quark 650W Platinum

SEASONIC -
Focus 750W Platinum
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STORAGE -
HGST Ultrastar 3TB - 64mb Cache - 7200RPM Sata III (3.5)
4X Samsung 860 EVO 500GB SSD's
2X Team Group L5 LITE 3D 2.5" SSD's 480GB
2X WD 10TB Essential EXT (I'm cool with shucking)
+ 6X various other external HDD's (from 4-8TB) - (Seagate, WD & G-Drives)
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Other accessories worth mentioning -
PCI-E to 4X USB hub-adapter (I have a dozen or so of these - might not be sufficient enough &/or needed but again, 'worth mentioning' in case I somehow ever run out of SATA & USB ports and have extra external USB HDD's. Although, I'm sure there would be better suited components if I get to that point that probably won't cost all that much).
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Needless to say, I have at least 1X of everything mentioned above. In most all cases, I have multiples of these items but obviously won't be needing 2X CPU's, Cases, etc...

Naturally, I have GPU's. Specifically;

At least 1X of every. Single. NVIDIA GTX 1070 TI (Yes, I have every variation of the 1070 ti made by MSI, EVGA and Zotac. The only brand I don't have is the Gigabyte line. My partners have terrible experience with those so I didn't even bother. I'm clearly not going to be needing a GPU for this build but again, I'm cool with discussing the idea of a barter if anyone reading this is in the market for one.

I also have some GTX 1080 TI's but those are already spoken for, sorry.

It's my understanding that select CPU's I have on this list are ECC Friendly and AFAIK, only 1 of my MOBO's claims to be ECC Friendly (The ASROCK AB350M PRO4), but for the life of me, I can't find any corresponding forums that confirm this and/or direct me to a listing where I can buy compatible RAM. Just the same, if I go w/ the ASROCK MOBO, that means I'd be using one of the Ryzens. Those are DEF. power hungry little buggers. Not a deal-breaker, just hoping to find something a little more conservative in terms of TDP.


In closing, I don't really need someone to hold my hand with the build part as much as figuring out which motherboard, CPU and RAM to get. Then I'm DEFINITELY going to need some guidance on what OS is best for my desired purpose. If building 2X Rigs makes sense, I'm totally open to that as well...
Rig 1 = EPIC NAS SYSTEM
Rig 2 = EPIC PFSENSE (or the like) DEDICATED FIREWALL

Oh, I almost forgot... The current routers I'm using are...
1X Netgear Nighthawk 6900P (Modem + Router)
1X Netgear Nighthawk X6S (AC 4000 I believe - Router dedicated towards my personal devices - no IoT &/or Guests allowed on this one)
1X TP-Link Archer C5 (Router). Total overkill after implementing the Nighthawks but this old beast somehow has the best range, plus it has 2X USB ports so for now, it's dedicated towards my IoT devices.
---- I also have a few other Wi-Fi routers (Apple Airport Extreme & some inferior Netgear's but I can only allocate so many WiFi Routers to so many WiFi channels w/out pissing off my neighbors) On that note, I have managed to convince my neighbors to let me in their house/WiFi configuration so we all have our hardware locked on specific, non-competing frequencies/channels so everyone's happy. :)


Please spare me the insults as I insulted myself throughout this entire venture. Part of why I did this was because when I was a kid, I used to fantasize about building a 'DREAM PC' but could never afford such. To compensate for this deficiency, I would actually print out the latest and greatest hardware components on a word document, print the lists up & tape to wall (for motivation). I was C++ certified at the age of 14 and built my first PC when I was 7. At the age of 15 I abandoned all hope in the sector and moved on to other aspirations. This entire ordeal was largely based off me finally fulfilling a childhood fantasy. On that note = mission accomplished. Now if I'm actually able to fulfill my desires on this post, I'm definitely going to feel less shitty about blowing so much money on all this stuff over the last couple years.

TIA for assisting in any way possible. Gotta love the internets!


THE END.
:)

EDIT/UPDATE (5 hours after OP) - My inbox is being inundated with various people asking for prices and other reasonable questions about my hardware being up for sale. Not to be redundant but rather to expound on my previous remarks about 'being interested in a bartetrade' with any of you here...

I did say I was going to sell my gear on eBay in the near future, I also said I wanted to trade/barter for anything relative to helping me accomplish my OP's mission(s). I'm not desperate for the $$$ but I'm also not one of those people that likes to rip other people off. That said; I value my time and money invested in this hardware and I'm only willing to unload it all once I've established I have ZERO need for any of it here in my home first. Hence my writing this lengthy thread in an attempt to repurpose at least a grand or two I've already spent.

One of the most commonly asked questions I anticipate receiving from interested bodies is going to be "How hard were you on your hardware?" Contrary to what anyone else would have probably done in my scenario which is say they were light on it whether they were or weren't, I documented my handling of the hardware, and have no problem sharing such documentation with verified, interested buyers (WHEN THE TIME COMES) to offer you guys peace of mind.

I have photo's and video's of the venture from A-Z. I am also obliged to provide (redacted) electricity bill statements where you can correlate my photo's (power draw on each rig), and also accurately deduct the excess power my house consumed with our other household appliances. Even taking into consideration how much (more) I spent in electricity from keeping my house at a constant, cool 70-72F year-round (via my Nest thermostat). Even without the rigs, I keep my AC @ 70 when I'm home and for the last 1.5-2 years, I just so happened to spend 85% of my time here at my house. When I would travel, I'd keep it at 72 for my wife & kids.
Additionally; I had each GPU 'custom' oveunderclocke'd (MSI Afterburner for all GPU's but the EVGA's).*
I doubt everyone reading this is aware so this is for those that don't.... EVGA had the brilliant idea of implementing what they call "ICX technology" in their latest NVIDIA GTX GPU's. The short(est) explanation of this "feature" goes as follows:

EVGA GPU's w/ "ICX 9 & above" have EXTRA HEAT/THERMAL SENSORS. Unlike every other GTX 1070 ti on the market, the one's with this feature actually have each of 2/2 on-board fans connected to individual thermal sensors. Which means - if you were to use the MSI Afterburner program on one of these EVGA's and create a custom fan curve for it, you'd only be able to get 1/2 of the fans to function the way intended. The other fan simply would not engage as the MSI Afterburner software wasn't designed/coded to recognize/ communicate with an added sensor (let alone sensor'S). This, in-turn, would likely result in whoever's using it the unintended way having a GPU defect on them within the first few months I'd imagine... Perhaps if they had the TDP power settings dumbed down as much as I did (60-63%), they might get a year or two out of it since it wouldn't run as near as hot, but I doubt any longer than that since cutting off 50% of the cooling system on one of these can't be ignored too long, surely capacitors would start to blow and who knows what else...
(Warning = RANT) Another interesting side-note about the EVGA's and their "Precision-X" OveUnderclocking software is that it's designed to only recognize 4X GPU's on a single system. For miners, that's just not cool. My favorite builds had 8X and for the motherboards that weren't capable of maintaining stable sessions on 8, I set up with 6X. Only my EVGA Rigs had 3 or 4X GPU's dedicated to a single motherboard. Furthermore, and as stated in an earlier paragraph, (& this is just my opinion) = EVGA SOFTWARE SUCKS! Precision X wasn't friendly with every motherboard/CPU I threw at it and their extension software for the CLC Close-Loop-Cooling/ CPU water-coolers simply didn't work on anything, even integrating into their own Precision-X software. The amount of time it took me to finally find compatible matches with that stuff was beyond maddening. (END RANT).
Which leads me to my other comments on the matter. That's what I had every single 1070 ti set at for TDP = 60-63%. Dropping the power load that much allowed me to bring down (on average) each 1070 ti to a constant 110-115W (mind you, this is only possible w/ "Titanium" rated PSU's, Platinum comes pretty damn close to the Titanium though) while mining Ethereum and was still able to maintain a bottom of 30 MH/s and a ceiling of 32 MH/s. Increasing the TDP to 80, 90, 100% or more only increased my hashrates (yields) negligibly, like 35-36 MH/s TOPS, which also meant each one was not only pulling 160-180W+ (Vs. the aforementioned 115'ish range), it also meant my rigs were creating a significantly greater amount of heat! Fortunately for the GPU's and my own personal habits, I live in South Florida where it's hot as balls typically, last winter was nothing like this one. Increasing my yields by 10-15% didn't justify increasing the heat production in my house by >30%, nor the added electricity costs from subjecting my AC handlers to that much of an extra work-load. For anyone reading this that doesn't know/understand what I'm talking about - after spending no less than 2-3 hours with each. and. every. one. I didn't play with the settings on just one and universally apply the settings to the rest. I found the 'prime' settings and documented them with a label-maker and notepad. Here's the math in a more transparent manner:

*** I NEVER LET MY GPU's BREACH 61C, EVER. Only my 8X GPU rigs saw 60-61 & it was the ones I had in the center of the build (naturally). I have REALLY high power fans (used on BTC ASIC MINERS) that were sucking air from those GPU's which was the only way I was able to obtain such stellar results while mining with them. **\*
Mining at "acceptable" heat temps (not acceptable to me, but most of the internet would disagree = 70C) and overclocking accordingly brings in X amount of yields per unit. =
'Tweaking' (underclocking) the GPU's to my parameters reduced my yield per unit from -10-15%, but it SAVED me well over 30-35% in direct electricity consumption, and an unknown amount of passive electricity consumption via creating approximately 20%+ less heat for my AC handler to combat.

I say all this extra stuff not just for anyone interested in mining with their GPU's, but really to answer (in-depth) the apparent questions you people are asking me in PM's. Something else that should help justify my claims of being so conservative should be the fact I only have/used "Platinum and Titanium" rated PSU's. Heat production, power efficiency and longevity of the hardware were ALWAYS my top priority.* . I truly thought Crypto would continue to gain and/or recover and bounce back faster than it did. If this project had maintained positive income for 12 months+, I'd have expanded one of our sites to also cater to GPU mining on a gnarly scale.

Once I have my NAS (& possibly 2nd rig for the firewall) successfully built, I'll be willing/able to entertain selling you guys some/all of the remaining hardware prior to launching on eBay. If there's something you're specifically looking for that I listed having, feel free to PM me with that/those specific item(s). Don't count on an immediate response but what you can count on is me honoring my word in offering whoever asks first right of refusal when the time comes for me to sell this stuff. Fortunately for me, PM's are time-stamped so that's how I'll gauge everyone's place in line. I hope this extra edit answers most of the questions you guys wanted to have answered and if not, sorry I guess. I'll do my best to bring light to anything I've missed out on after I realize whatever that error was/is. The only way anyone is getting first dibs on my hardware otherwise is if they either offer compelling insight into my original questions, or have something I need to trade w/.

THE END (Round#2)


submitted by Im-Ne-wHere to buildapcforme [link] [comments]

Debunking myths about mining and GPUs

E: Going to bed, will contribute more tomorrow. Thanks for the discussion!
Myth: Mining is more stressful than gaming. Fact: It depends. During the old days, this was plausible, because older GPUs (Pre-polaris) are/were bottlenecked by core clock when mining the most profitable coins. Thus, miners overclocked and overvolted these cards quite frequently, especially with cheap electricity. This meant that those cards were often run hot, pushing the limits and stressing VRM and fans quite a lot. Nowadays, ethash (Ethereum) is the most profitable algorithm for AMD cards 99% of the time, and newer GPUs (Polaris) are limited by memory bandwidth and latency. Miners can underclock core to the low 1100MHz range before seeing performance drop. To save power, miners who know what they are doing also undervolt, since it is no longer necessary to sustain a high core clock. Thus, it is quite feasible to run polaris cards below 70C at a reasonable fan speed. However, dual mining (mining more than one coin at once) does increase power consumption by up to 20%, and there are also idiots who run their polaris cards OCd while mining. With the exception of a few idiots, miners treat their Polaris GPUs pretty much the same; that is, running underclocked and undervolted 24/7 with a memory strap mod and mem OC. On the other hand, former gaming cards are highly variable in use cases. Some gamers leave their cards at stock settings, some undervolt, and some OC and/or overvolt. Most of the time, these cards are thermal cycled far more often than mining cards, which is known to weaken solder. Another thing to consider is that manufacturers have learned (somewhat) from their mistakes of putting shit tier fans in GPUs, and many fans on modern GPUs are ball bearing and/or swappable. Even some budget cards, such as MSI Armor, use decent ball bearing fans. Bottom line: the risk of buying mined Polaris cards is not as high as the risk of buying older mined cards. I would not be against buying mined polaris cards, but it's not necessarily better than buying a gamer's card instead. At the end of the day, it depends more on how the owner treated it than what they used it for.
Myth: GPUs are obsolete because of FPGAs and ASICs Fact: Mostly false. Older algorithms such as scrypt and SHA256 (lite/doge/feathebitcoin etc) are no longer feasible to mine with GPUs, but there have been multiple algorithms since then that are built to deter ASICs; most of the time it is done by making it memory-hard because designing an ASIC with high memory throughput is considerably more expensive to design and manufacture. Many devs prefer their blockchain to be ASIC resistant to avoid the concentration of power problem that Bitcoin is having nowadays, where a giant, near-monopolistic ASIC manufacturer (Bitmain) is causing a lot of (subjective) controversy. Blockchains based on ethash (Ethereum and its forks), equihash (Zcash and its forks) and cryptonight (Monero and forks) are some examples, but there are scores of other shitcoins and a few other algos that are GPU dominant. It is almost impossible that there will be another ASIC takeover, which is what was responsible for the stop in GPU demand in the bitcoin and litecoin days. Bottom line: ASICs no longer threaten GPU miners, or the demand for GPUs
Myth: Ethereum switching to Proof of Stake will kill mining soon Fact: Doomsayers have been preaching about proof of stake since late 2015. It has always been "coming soon." The fact is, the Ethereum roadmap goes from proof of work (mining) -> Casper (mining + PoS) -> Metropolis (PoS). Currently, the release date of Casper is not even announced yet, nor is it being tested in a (public) testnet. Proof of Stake might one day take over, but mining is here to stay for a while yet. Another thing to consider is that there are tons of other GPU mineable blockchains, and although Ethereum is biggest, it is certainly feasible that mining stays profitable even after Ethereum goes PoS (if it ever does). However, it is possible that profits will be low enough to discourage new miners. Bottom line: It's very unlikely. E: I screwed up the roadmap; here is a better source than me with some interesting information: https://www.ethnews.com/ethereums-vitalik-buterin-gives-keynote-on-metropolis
Myth: The current Ethereum demand spike is a bubble Opinion: Honestly, I don't know. I would not be surprised if stricter regulations on ICOs come sooner or later, which would fuck with Ether prices. There is also the inherent volatility of cryptocurrencies. However, it is also possible that blockchain technology continues to gain traction; that is, the price could just as easily go up as go down. Although it's fun to read about other people's opinions, only time-travelling wizards can tell you when it will become economical again to upgrade your poor HD5770. Bottom line: No one knows.
Myth: Miners will "steal" all the RX Vegas Fact: Only a reckless miner would buy Vegas on release, since mining performance is not known. In fact, it is possible that it can't mine at all (or at some stupidly low speed) until devs add support to existing miners. It would be even more reckless than gamers who buy without seeing benchmarks, since at least gamers can expect the games to actually run. It's also not necessarily the case that Vega will be good once miners do add support. Maybe there will be enough reckless miners to affect supply, maybe not. Of course, it is possible that miners will deplete the supply after it is demonstrated that Vega is good for mining. Bottom line: Most miners won't preorder, but it's possible that a significant number will. E: Important to remember that even if mining demand isn't high, doesn't mean that supply will be plentiful.
Myth: Nvidia cards SUCK at mining Fact: Mostly false. They USED to suck in the old pre-Maxwell days, but now they are actually more efficient at mining Ethereum and Zcash compared to AMD cards, even after both cards are undervolted. The flipside is that they (used to) cost more for the equivalent hashrate. For reference, my old 5xRX470 rig drew just under 800W when mining ETH only and hashed at 150MH/s. My current 6xGTX1060 rig draws just over half of that (<450W) and hashes at about 135MH/s. Certainly not as good in raw performance, but they are viable nonetheless, especially given the AMD GPU shortage. In fact, Nvidia cards (1060 and especially 1070) are becoming scarce as well. Bottom line: Nvidia is still the underdog when it comes to mining, but far from irrelevant nowadays.
Myth: 4GB cards will be obsolete for mining soon Fact: FALSE. The Ethereum DAG is not even 3GB yet, and won't be for a few months. The recent reports of 4GB Polaris cards slowing down soon due to DAG size is caused by limited TLB capacity, not VRAM restrictions. Polaris cards will still be able to mine ETH forks such as Expanse and UBIQ without diminished speed, and even if they are used to mine ETH, it is not that much of a performance hit at first. It would certainly not make polaris useless or undesirable for mining anytime soon. Tahiti GPUs already suffer from this issue and Hawaii is the most resistant to this issue. Have not benched Nvidia at a later epoch.
Myth: Creating miner-bashing posts on Reddit will help alleviate the GPU supply problem Fact: False, you are simply giving cryptocurrencies and mining more exposure to the general public, increasing demand.
Myth: Mining-specific GPUs will solve the shortage problems Opinion: There's not enough info to tell yet, but I am a skeptic for the following reasons. First, no display limits the resale value of the card for obvious reasons. IMO, the whole point of crypto mining from a profitability standpoint is to have a hedge against coin volatility (hardware is still worth something if the coin crashes). Otherwise it is much less effort to just buy and hold the coin. If the hardware is useless without demand from other (significant) sources, then it doesn't make much sense to buy it unless the price is extremely low. I'm sure that cost-downing the PCB and warranty will make for a cheap card, but it has to be extremely cheap and plentiful in supply, or else miners will buy whatever they can get. I could envision "failed" chips (not meeting spec of consumer editions) being stuck in miner cards, but I doubt there are enough to meet demand without ramping up production as a whole, which carries its own risks. I guess that it would help a little, but probably not solve the problems. Alternatively, since modern GPUs are bottlenecked by RAM when mining, it might be enticing to miners to have the fastest (GDDR5) RAM on the market (probably the 9gbps chips from the 1060 6G 9gbps edition, although I don't have one to test). However, my previous points still apply; buying such a card without display outputs carries a big risk. Bottom line: It's not a great idea, unless they are super cheap or use really good RAM.
Hope this helped; if you have any further questions I will try to answer them. I'm both a gamer and miner who uses both AMD and Nvidia roughly equally and don't favor one group over another. I've mined and gamed on all high end AMD GPUs since Tahiti (except Tonga) and all Pascal cards except 1050ti.
submitted by key_smash to Amd [link] [comments]

Are ASICS a threat to GPU mining?

I'v been seeing a lot of people both in this subreddit and just around the internet claim that GPU mining is on it's way out because the ASICS have come for ethereum mining as well and it will soon follow the bitcoin route. Decided to do a bit of research to see what's really out there and here's what I got.
There are quite a few eth ASICS but they have such horrible ROI that I won't even include them (like Geass that does 198mh eth and costs $10000). The closest to profitable I got is the Antminer E3 ASIC that costs $2150(was announced $800 but that quickly changed), does 180mh eth and uses 800w. At the price of $800 that would indeed be better than a GPU rig (performance of 6xRX580 for around half the price) but at $2160 that's far from it. Not to mention 6xRX580 can use less than 800w.
But what's the reason for that? Why haven't ASIC miners taken over the market like they did with bitcoin and if they haven't isn't it a matter of time. Maybe just a year or less? Arguments against ASICS taking over eth:
  1. Ethereum was created after bitcoin was already a thing and ASICS had already taken over. And the ethereum people (and many other crypto besides them) didn't want that to happen so they made mining it specifically ASIC resistant. You can google that if you'r interested how it works.
  2. Forks have been very bad for ASICS. Examples include when it happened for Siacoin and Monero. ASICS for it before the fork basically became obsolete.
  3. ASICS have been trying to outperform GPU rigs since 2017 and a year and a half later they either have failed or have won for small periods of time. For an example equihash ASICS are profitable now but are likely to drop rapidly after incoming forks.
Arguments for ASICS taking over:
  1. In the war between companies trying to crack ASIC resistant cryptos and the cryptos themselves one can guess the companies get the better funding. The big investors would surely love to get a hold of the cryptos with 100x more profitable than GPU ASICS. So in this war it is possible that it's just a matter of time before cryptos are defeated and ASICS rule.
Oh and one last thing. If you are mining with a GPU and ASICS take over or maybe cryptos die you can just sell the GPU to gamers for a nice profit. Can't say the same for the ASICS.
What do you think? If I'm wrong I'd love to hear why. This is meant as a discussion. Here's a nice link with more info on the subject.
https://1stminingrig.com/asic-vs-gpu-mining-profitability-in-bear-markets/
submitted by Gaxdorakh to NiceHash [link] [comments]

My mining story so far and future decisions.

Be gentle my first reddit post! I'll put a TL:DR at the end.
Although I've known about crypto a long time I actually only decided to get into mining about mid May, I tested Nicehash on my 1080 rig for a few days and was impressed by the results, after lots of reading and research (thanks goes to people on this sub) I ordered my first set of GPUs, 6x 1070's then 14 more and 2x asus prime z270-a rigs, for a total of 20x 1070's.
My rigs run Linux and I've tested a bunch of miners and algos, finally settling on ewbf, I've tweaked my cards and get about 430 sols/s average with 80% power.
The first month was great, sometimes making .1 BTC in 2 or 3 days and met my target of 1 BTC but slowly I noticed the estimated weekly earnings dropping, sometimes going up but the trend was always down, half the second month past and earnings had also halved.
At this point I tried a few things, optimised my cards best I could and for a week before and after UAHF I mined ZEC to suprnova, then traded it for BTC on hitbtc, this was actually pretty fun and I sold my ZEC when the market was good.
Then I recovered my BCH (bitcoin cash) and traded that in on hitbtc when it was at .1 which I feel pretty good about, this is what interests me now and yesterday I made $200 trading NEO on bittrex, not a fortune but it was a rush!
So here we are mid august with most alts in the toilet and bitcoin on the way to the moon and earnings at .25 BTC a month -- I have to decide what's next, even at such low earnings with the price of BTC so high it's still profitable, so my choices are as follows:
Sell up now while GPU prices are good and use that money to buy BTC and set up an alts trading fund probably 25% of my total BTC holdings as well as buying BTC with the money I'd otherwise be spending on electric.
Keep mining and hope either alts pick up or BTC doubles again to offset the costs, or even just mine at a loss in hopes BTC will reach the moon one day or some combination of both.
Obviously none of us have a crystal ball and I'm not asking anyone what I should do, but I'm interested in what options others who are perhaps in a similar mindset/position are considering or if anyone has jumped ship already?
TL:DR -- I might quit mining, I might not, what do you plan to do and why?
submitted by MyssTbits to NiceHash [link] [comments]

20x GPU miners: Sapphire 60x R9 Fury 4G; 30x RX480 8G; 30x RX480 4G

Selling parts of my mining assets. 20 miners total, 6x GPUs per miner. All miners are enclosed in 4RU 19-inch server cases for telecom racks. - 10x miners with Sapphire RX 480 Nitro and Nitro+ GPUs, 30x 8Gb with Samsung RAM, 30x with 4Gb RAM (Hynix, Elpida, Samsung). GPU BIOS patched, undervolted, been mining Ethereum. - 10x miners with Sapphire R9 Fury 4Gb GPUs. GPU BIOS patched, undervolted, been mining zCash and XMR All miners are recently cleaned and air-blown though still have some dust.
20x 6xPCIE motherboards with Celeron G1840 CPU and 4G of RAM and 16Gb SSD drives: 14x Biostar TB85 mobos, Other 6 mobos are Asrock z97x KilleH81, MSI Gaming 5/G45. TB85 sets purchased from GPUshack.com with Ethos licenses.
R9 rigs have 2 PSUs, both are 1000W ButterflyLabs ProMiner Gold 80 PSUs. RX480 rigs have 1x 1200W ButterflyLabs ProMiner Gold 80 PSU. Each miner is equipped with 3x 120mm 150cfm fans for cooling. R9 cases are better than RX480 boxes: can fit 2 PSUs. Also 4x R9 miner cases are from Greymatter, bought at $500 each. Assembly of all miners has been performed by my hosting provider: not perfect but functional.
Bonus: 1x APC 7998 network-enabled 12.5kW rack PDU.
Pick up from the Dalles, OR (85 miles from Portland, OR). Miners are still with my hosting service provider there, hence no timestamps on pics.
Selling everything for $20k. Cash preferred but other options will be considered. Parting out will be considered if no interest for complete set.
Pics of miners: https://imgur.com/a/pclfAgk https://imgur.com/a/AVvJjSs https://imgur.com/a/QPE1W2O https://imgur.com/a/YtvQkYD
Ethos panel: https://imgur.com/a/R3UEucm
BitcoinTalk Link to Contact
submitted by MarketBot to HellsCrypto [link] [comments]

AMD Vega 64 only mining at 10Mh, but other people reporting 40-60mh... What’s wrong with my setup?

Hi everyone,
Old school miner from Bitcoin 2013 days.
Fired up the rig and put a AMD Vega 64 into a Mantiz Venus eGPU box and connected it to my Thunderbolt 1 MacBook Pro.
I used ethminer to get it going and it only pulled 10Mh in the miner.
I checked online and other people were getting 4-6x more hashes than me. How is this possible?
If it helps, the Mac is a 2011 MacBook Pro (I tried on a 2014 Regina MBP, same haha rate). I use the reference Vega 64, and ethminer in MacOS High Sierra.
Can’t seem to figure it out :(
EDIT: my Command line is ./ethminer --farm-recheck 200 -G -S us1.ethermine.org:4444 -FS us2.ethermine.org:4444 -O My.ETH.Address.mbp
Update:
It turns out mining in MacOS sucks. I loaded the Blockchain drivers from AMD, hash rate is up to 35mh now.
Thanks guys!
submitted by fishtar to gpumining [link] [comments]

IBM 2880W PSU/Breakout Boards - *NEW* Package deals for T9/S9 & A7

Please see here for IBM 4K PSU packages: https://bitcointalk.org/index.php?topic=1308296
Please see here for GPU rig powering packages with all adapters necessary to run rigs off these PSU's! https://bitcointalk.org/index.php?topic=1864539
NEW - PACKAGE DEALS
The "Get Me Going" Package
(Tell the wife her dryer now runs on 12V and has blinking lights and loud fans) Simply add a C19 cable. - 1x 2880W PSU - 1x Breakout board - 10x 24" PCIe cables
The "Double A (AntmineAvalon)" Package
Enough to power 2x Antminer S9's for as cheap as possible - 1x 2880W PSU - 1x Breakout board - 20x 24" PCIe cables - 1x C19 power cable of choice (see below for stock)
The "Royale With Cheese" Package
(Perfect to run 2x Antminer S9's, mixing and matching lengths for flexibility and value.) - 1x 2880W PSU - 1x Breakout board - 11x 24" PCIe cables - 11x 36" Deluxe PCIe cables - 1x C19 power cable of choice (see below for stock)
The "Pimp Daddy" Package (Add a 50A circuit and go big, with PDU included for clean, simple & safe install) - 3x 2880W PSU - 3x Breakout boards - 1x 40A 4-port PDU with breakers for each circuit - 30x 24" PCIe cables - 30x 36" Deluxe PCIe cables - 3x C19 power cables of choice (see below for stock)
Boards and cables ship from Canada, PSU's ship domestically in the US to save on shipping and any potential duty/taxes at the border.
Individual pricing Note: Bulk pricing is available, please contact me.
Board price - $65 each.
PSU (Refurbished) - IN STOCK. Includes ground shipping within the US.
I can supply PCI cables in two different configurations:
-36" Deluxe, high quality 16awg made in USA- $4.50 each (IN STOCK)
-24" standard 16 AWG cables - $2.50 each (IN STOCK)
C19 to C20 cable (14awg, 1.6M) - $12 each
C19 to NEMA 5-15P cable (14awg, 1.6M) - $12 each
C19 to NEMA 6-20P (12awg, 1.6M) - $12 each
40A continuous-rated PDU (requires 50A circuit): $120
24A continuous-rated PDU (requires 30A circuit): $60
60A 3-Phase Delta current-monitored PDU with remote access: $350
LEASING CONTRACTS
I have started to offer leasing packages for use in approved Data Centre/Co-locations. This can be beneficial for many reasons:
-Less upfront capital required, allowing more to be spent on additional mining hardware which can offset much or all of the cost of the lease
-Limits risk and cost of equipment failure, and associated down time due to failures
-Saves shipping costs for heavy PSU's to and from hosting location for duration of your contract
-No equipment depreciation
-Helps eliminate ownership problems associated with Group Buys, when more than 1 member shares purchase price of PSU to host together
-All maintenance, replacement, shipping, setup, and lost revenue from down-time due to PSU failure is my responsibility
Please contact me for details.
Shipping
Shipping will be calculated individually, to make sure you are getting the best rate. All prices are in USD. I am willing to accept escrow through OGNasty, and can also do Paypal but buyer will be responsible for covering costs of either services (4% added to paypal, OG charges 1% for escrow).
Each package of PSU, breakout board & 10x PCI cables is approximately 16 lbs.
The BTC address for all non-escrow breakout board orders is here: 1GWQYCv22cAikgTgT1zFuAmsJ9fFqq9TXf I will not PM you asking for payments to any other address, so beware of F1nksy, Fink5y, or whatever scammy names might pop up.
Original Post:
Hi everyone,
I am the official North American distributor of Break-out boards for the IBM 2880W Bladecenter H PSU's, which are 80+ platinum rated (94%+ efficient) Edit: UN-VERIFIED AT THIS POINT and have provision for 22x PCI-E cables. Unlike other server boards, these don't rely on screw-down terminals and bare wires which can get loose and spark causing fire hazards, and limit the exposure of live contacts to surfaces above and below the PSU. Instead these use a double-sided PCI 6 pin cable, which only cost about $0.10 more than the standard PCI-6 to bare wire versions. Also, unlike the DPS-2000BB -which is the next largest server PSU available for miners- these have fans already built-in, so don't need extra work to set up up and deploy.
The PSU's themselves are available on e-bay and elsewhere (I sell them as well), and the boards will be priced at US $70 $65 each (better pricing for bulk purchase, volume structure will be the same as J4bberwock's). Each PSU can handle 2x Antminer S7's, 3x SP20's, 5 Antminer S5's, or 8 Antminer S3's. You won't find better value for power, and there are very few ATX-based PSU's that provide 80+ platinum efficiency (and none for under $200 for even 700-800 watts). Edit: UN-VERIFIED AT THIS POINT Lastly, unlike ATX-based PSU's, these can be run at (and I have found even over) their rated power, as they were designed that way for server use. They do, however, require 240V input. Also, running these over at over 90% load will give you slightly decreased efficiency, and could affect their reliability.
I have personally taken 3x SP20's to settings around 960 watts (at ports, not at wall) each for approximately 2 weeks, and the PSU drew 13.41 amps (@ 235 volts - 3150 watts @ wall). So at absolute full load (or possibly over), these will still hold over 90% efficiency. Very impressive, and I will be testing different fans to reduce sound for home mining (fans on these PSU's are slightly louder & higher pitched than SP20 fans). Sloopy informed me that he ran 11x Antminer S3's on a PSU for a while (over 3,300W DC!), but that is certainly not recommended, and will eventually cause the PSU to fail. It is simply a testament to how tough these PSU's truly are, and that spikes over their rated output shouldn't affect performance.
Here are some pictures:
Feel free to contact the developer of these boards if you have any concerns, he will verify that I am authorized to sell these. https://bitcointalk.org/index.php?action=profile;u=206446
Here is the spec sheet with efficiency rating: http://www-03.ibm.com/systems/bladecentehardware/chassis/bladeh/
Thank you for your time,
Finksy
J'observe qu'il y a plusieurs Québécois sur se forum. Mon Francais est au niveau primaire mais je peux communiquer sans probleme.
Me gusta mucho aprender español, y tengo un conocimiento muy básico (con traductores). Pruebame, si eres paciente
Here is my PGP key for anyone wishing to send their personal information encrypted:
Code:-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v2
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I will honour a 10-day return/exchange for PSU's or Boards that are DOA. However, these PSU's are used and although I try to briefly load test them all before sending them out, it is impossible to predict failures. As such, no warranty will be offered beyond what was previously mentioned. If you are looking for more peace of mind, please feel free to source PSU's yourself either new or used.
BitcoinTalk Link to Contact
submitted by MarketBot to HellsCrypto [link] [comments]

Should I build a second rig, or sell off spare parts?

All,
I recently got back into GPU mining after running a litecoin rig back in 2013 (wish I'd held onto those 76 Litecoins... or even the 2.6 bitcoins I turned them into). After try to get the old rig back up and running with a couple of older cards (a 7950 and a 5830), I ran into all kinds of driver problems and decided to build out a new rig with an existing 1000W power supply, a SSD I had laying around, my old ram sticks, and an old CPU I had for testing. About the only new things I bought were a Biostar TB85 mobo, 6x 1060 6GBs (the AORUS ones), and risers. I got it all set up on one of those three-tier racks you can buy at Fred Meyers or Wal-Mart and about 7,000 zip ties.
Currently the 1060 rig is set up on mph with nemosminer. I started with MinerGate but it's a bit too opaque for my tastes.
However after all that I'm still left with another spare 750 Watt power supply, a Gigabyte Z97X-SLI mobo, and an extra stick of 8GB DDR3 Ram. I'm trying to convince myself not to build another rig. Should I sell off these parts, or should I grab a CPU, 4 more GPUS, risers, and pop together another rig?
submitted by aos_trendingdown to gpumining [link] [comments]

A few questions of a new miner

Hi guys,
I have been following cryptocurrency for a while now and I have decided to build my own mining rig with 6x NVIDIA GTX 1070 GPU's. Now I'm wondering which cryptocurrency I should mine or if I should just sell my hashing power to Nicehash. Futhermore, is the difficulty of a cryptocurrency correlated with the number of miners of the crypto? Because in the past week I have been watching Feathercoin (FTC) on https://whattomine.com and the difficulty of this coin seems relatively low. Does that mean that this coin is easy to mine? What kind of mining strategy would you guys recommand and would you suggest to let your profit be paid out in Bitcoin or the coin that you are mining?
I want to thank my fellow miners and cryptofans in advance for answering my questions and giving me advice :)
submitted by iNeedMoreRice to gpumining [link] [comments]

Poor College Shibe needs 2MÐ for New Mining Rig - Follow-Up

Hello again Shibes and Shibettes!
I posted about a week-and-a-half ago about my goal to acquire a brand new mining rig - something I've always wanted to do ever since Bitcoin was young. However, because of school payments and life, I can't really put a whole lot into paying for it, so I am attempting to crowdsource my rig, and get some of the funds back to the community in the form of 6x donation matching, regardless of amount.
My original post is here, and most of the details are the same (although the current donor list and status bar will be updated here!) I have decided to go with 5 ASICs instead of GPU, however.
If you can't look at that post right now, the gist is that for the RIG I wanted to build, I would have needed 1.9MÐ (About $900) to completely pay for it. That amount is still valid, however, I have decided that I will get more bang for my buck if I invested instead in 5 Gridseed ASICs, which use less power per kHash.
I understand there is a lot of controversy concerning ASICs right now, so if you wish to withdraw funding, I will re-credit your account with the Doge you donated. If you are interested in helping me fund this project, or want to add additional funds, please feel free to do so. I have changed the donation address to a paper wallet, so you can check the actual balance on the Blockchain at any time. Then new donation address is DMcme1Du6FCXQJHUL8tGYKFQBhZnCJoJvx (tip to that address, or to my Reddit account), and I will be posting updates to this thread as frequently as I can!
I also have a separate wallet set up for the Doge I have transferred from my own personal wallet. You can view the current balance of that address here. Please do not donate to this address - it is only here so you all can verify the total progress funds!
Thanks for all past donations made, and extra thanks to all future donors!
Shorthand code to tip directly to the address: +dogetipbot DMcme1Du6FCXQJHUL8tGYKFQBhZnCJoJvx Ðamount verify
Replace amount with the amount you wish to donate!
PROGRESS: |==== | 215K / 1900K (Donated) |===== | 418K / 1900K (Total) 
Verified Donors: deadmauj, danhauss, guessgame, TheNYKnicks, Taylorwoood, soysauuce, Matricon, saluk, RandomGirlName, beinggreen, CraftyPolyglot, perfectshot29, CatDerpAndSlurp, i_eatProstitutes, laris bot, naden1, TheDaZuru, Fre4kso, Fulvio55, dontforgetthis2
EDIT (4/15): Updated donor list, updated current progress. 1/6 of the way there! Will be a lot closer on Friday - I'm going to put a little bit extra in my pool since I got a raise. Waa-hoo! Thanks everyone!
EDIT (4/16): Thanks to everyone who donated! I'm putting in my orders for two brand new Zeus Miners today - converting Doge to BTC now to take advantage of discount! I'll continue to use this thread to post updates.
submitted by TsujiWolf to dogecoinbeg [link] [comments]

Thoughts from a newbie & Request for reports on whether you're making good profits/payback periods

Hi
I am interested in mining and it seems the bitcoin is simply out of reach.
I have access to land and warehousing, electricity is somewhere under 12c/kWh.
Is it worth going into this GPU mining business?
I saw a post recently where someone mentioned a 6x NVDIA 1070 rig was mining a whopping .043 bitcoingold last month. That amounts to just $9/day gross and the payback on the GPUs alone is five months.
I understand there is some uncertainty here, and I think my approach would be to have four rigs each mining a different coin, in order to diversify and improve my possibilities of hitting on a coin that takes off.
Anyway, these are my thoughts on it so far. I am confident I can get the technical side of assembling the hardware and such, but I'm trying to figure out, is it really owrth it & is anyone really making money with ethOS?
Thanks in advance for your replies.
submitted by terren2o1 to ethOSdistro [link] [comments]

SHA256 with ASIC compared to Scrypt with GPU

this is the very basic for latecomer always doesn't understand.
i keep seeing they insist on mining bitcoin with SHA256 ASIC, i know its fun, its fun to see you generate money out of thin air, but thats not how we do it today because SHA256 ASIC era are gone, its very expensive playing field right now, if you insist want to mine some bitcoin, you should start mining using GPU! why?
lets calculate profitability of your SHA256 ASIC, and lets make it really easy by assuming some factor :
now go here you will see you will get 1 BTC in about 75 days right now (see the 2nd column from the rightmost), this value is not correct since it does not account for difficulty increase within 75 days, bitcoin difficulty are increasing about 35% in 2 weeks, thats about 70% per month, you will see the correct calculation is here which you will never get 1BTC within a year, and after 6 months your ASIC doesn't generate bitcoin anymore
now lets compare it to GPU miner for Scrypt mining, which i use realistic assumption here
now go here, you will see that on the most profitable coin (first row) you will get 1 bitcoin for about 30 days (its 45 days faster than SHA256 ASIC), how about difficulty increase within these period, this factor is not as scary as bitcoin, lets see difficulty chart for LTC here, you will see that the diff is up and down, by calculating the data history for 1 year, you will get that LTC difficulty increase is about 3% per month on average (this is 25x smaller than bitcoin difficulty change rate), so coinwarz data is not too much way off here by not take into account of difficulty increase
TL;DR;
note: this calculation are made in worst case scenario for GPU compared to best case scenario for bitcoin ASIC
thats just prediction and calculation, things will go wrong right? lets see the report from my own GPU mining rigs here, see 2nd sheet (RIG1-Report), this is my earning report day to day in BTC (already running since december 2013), my rigs cost about 2000$ (this is 2nd hand 6x AMD 7970 for 4.2MH/s) and will ROI within 50 days from start if my calculation are correct
submitted by uraymeiviar to BitcoinMining [link] [comments]

Thermal Pasting My 6 x 1080 Ti Mining Rig... SULTAN MINING RIG  6X GTX 1080TI PART 1 PC BUILD  RAKIT PC diy build 6 x gpu wooden mining rig frame Building 6 GPU Mining Rig Weekly Profit with my 6 GPU MINING RIG! - YouTube

With the recent craze with the price of Bitcoin as well as many altcoins rising up there is a huge wave of new GPU mining rigs as well as new crypto miners getting into the game. 6x GPU Capable Mining Rig Motherboards are Disappearing 6X GPU AMD RX 570 Mining Rig Cryptocurrency Ethereum Zcash Bitcoin and More Brand: Krambu. Available from these sellers. Brand: Krambu: Series: 6-PACK RX570: Operating System: Windows 10: CPU Model: Celeron J1800: Processor Speed: 2.58 GHz: About this item This fits your . Make sure this fits by entering your model number. READY TO MINE OUT OF THE BOX! 6x MSI AMD Radeon RX 570 4G ARMOR OC ... MiningCave Inc, Worldwide Distributor in Cryptocurrency Mining hardware GPU miner, Bitcoin, Litecoin, Ethereum, Shipping Worldwide, Best price, Fast shipping As we are going to build 6 GPU mining rig we will use 6 Graphics Cards. As more and more graphics card going out of stock we have to take care that we buy the correct graphics card. We don’t want to end up mining Ethereum at very low hashrates. Update – Article has been updated to be working in 2019. As many people have started mining cryptocurrencies – Ethereum is one of the most ... If you would like to switch to a different coin or you have a question about mining, we are happy to help you. We carefully optimize every miner to get the best performance out of every graphic card compared to the power usage. We test every miner for 24-48 hours, to make sure you get the best results. We have the fastest delivery of Europe. Every asic/gpu miner will be delivered within 7-10 ...

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Thermal Pasting My 6 x 1080 Ti Mining Rig...

kami adalah sekumpulan orang yang menyukai sebuah experimen . #bitcoin #cryptocurrency #mining #miningrig #GPUmining. Best Bang For Buck GPU Mining Rig Build Guide 2019 - Mine Zcoin, Ethereum, Ravencoin, Grin, and Beam - Duration: 36:40. VoskCoin 79,337 views How To Build a Crypto GPU Mining Rig With $1000 or Less! Duo Miner! Beginner Guide ETH/Beam/Zcoin Duo Miner! Beginner Guide ETH/Beam/Zcoin - Duration: 16:23. Coolest Bitcoin Mining Miner - Liquid Cooled Experiment - Duration: 6:51. Joel Pagan ... How to Build a 13 GPU Mining Rig With 7 1080 Ti & 6 Rx 580 on a ASRock H110 Pro BTC Ethereum PART 4 ... How to start Bitcoin mining for beginners ... How to Build a GPU Mining Rig Part 1 (The Parts ) - Duration: 17:38. Geek Mark 48,589 views. 17:38. DIY Bitcoin Mining: Hardware (part1) - Duration: 7 ...

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