4 x GTX 1070 - Power efficient Mining rig for Ethereum (50% TDP, 100W, 31 MH/s per GPU)

A short video of my mining rig prototype, up and running since around 1 week and very stable so far.

As pretty much everyone else I could not get a hold of any proper AMD rx470, rx480 etc. GPU, so I decided to give the Nvidia GTX 1070 a try.

So far, I cannot complain. It was pretty much plug and play and I had not issues at all setting it up. After a few optimizations, e.g.
- Reducing TDP from 100% to 50% (79% shown in Afterburner)
- Reducing Core Clock by 100 MHz
- Increasing Memory Clock by 600 MHz (maximum is 800 MHz for me, due to Micron Memory 😊)
- Changing fan-curve (more steep)
- Adding a 5 USD external 2,5 W fan

I am getting a relatively decent Hashrate of 31 MH/s per GPU (124 MH/s for the rig) on Ethereum at a total Power Consumption of just under 460 Watt.
Also – after adding a cheap external fan, and despite ambient temperatures being at 30°C – all GPUs are operating at an acceptable temperature range of 51°C – 58°C at full load without me having to switch on the room’s AC for active cooling).

Note: Although in the video it sounds like I am standing next to a jet engine, in reality the fans are clearly audible, but not that disturbing! 😊

For anyone interested, those are the parts used in this rig:
GPU: 4 x MSI Geforce GTX 1070 Armor OC 8GB GPU (http://amzn.to/2wfBd0C)
Motherboard: MSI Z270-A PRO w/ 6 PCI-E Slots (http://amzn.to/2xnhnAT)
CPU: Pentium G4560 (http://amzn.to/2wSbjT6)
RAM: 2x 4GB Kingston DDR4, 2400 MHz (http://amzn.to/2xnH6cf)
HDD: 120GB Kingston SSD Now 300V (http://amzn.to/2xnMf3U)
Power Supply: Corsair RM1000i (http://amzn.to/2xnH2te)
PCI-E Powered USB Risers (http://amzn.to/2wJuXkN)

Total Build Costs: 2,300 USD (w/o the screen which I had available)
Monthly Earnings ~220 USD (0.65 ETH @ current difficulty + Price Level)
  • nektrs

    Great review bro! Thanks! It's good to know what to expect before you buy.

  • wen li ritchie lee

    So conclusion what should we set the coreclock and the power at? For most efficient..

  • Gym Life

    whats youre current afterburner settings?

  • Danny h

    you made a mistake it said 457kW instead of W

  • adriano cruz

    Muito bom sua análise amigo. Eu minero 3 1080ti zotac amp extreme!!

  • wen li ritchie lee

    hi, im gonna be building the same msi 1070 armor soon. was thinking is it efficient to mine the ethereum or better use it to mine bitcoin? i heard many say for ethereum best use the AMD RX... any recon> ? also do the profit per day able to cover the cost of electricity? currently my country charge around $0.09 usd for kw/h. i might going to get 6 pcs of the msi 1070 armor.

  • Gym Life

    you think i can run 8 cards on a 1000w platinum psu?

  • Thyago Vasconcelos

    This profit "monthly earnings ~ 220 usd" is without the cost of energy?

  • SidYt

    Am not getting proper mhs on my 1070 cards help me plz :(((

  • itechnolearn

    I am buying the exact same configuration as you have, the only problem being RAM and Power Supply. (I have a 220V Line) Will it work with a 750W Power Supply? Also I wanted to ask whether 4GB DDR4 is enough or I need to get 8GB.

  • winterfell studios

    Used mod VGA or just setting MSI afterburner??? Please answer it bro

  • Vasco Lino

    Hi everyone, I don´t know if this is the best place to have someone help me with this doubt... I started mining yesterday, the machine started working fine for three hours but after that, it crashed... I´m using three graphics cards 1060 (6 Gb) and get nearly 60 Mh/s, now every time a start mining again the time is dropping (last time 15 min.). I´m using a Windows 10, Claymore, and mining in nanopool. There is any configuration I need to do to make the mining process more stable? Thank you all in advance, D :-)

  • wen li ritchie lee

    can i know how much will that small fan causes additional on the electric costs? lol. honestly. need to know. currently i might put my rig in my bedroom where everynight i will on the aircond. but i still might wana install a small fan like your. lol

  • Aquarium Samurai

    Dude you're the man! My cards were sucking some power and I kept crashing when trying to go down on power. I lost a little hashrate using your setting but the profits actually went up a little because of the wattage. Thanks!

  • ManunggaL

    how much do u earn/day dude ?

  • No Alias

    No wonder you can't find 1070s on Amazon for a good price

  • Hitesh Bhagat

    it is W instead of kW

  • wani perih

    good one sir! Well done. Thanks for sharing.

  • Under A Bridge Too Far

    Lol all that for 3$ a day?

  • Alen Lednik

    why 1000w PSU if you using only cca 450w for 4 gpu?

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