6GPU Rig Power Supply

Jeremy1369

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Dec 4, 2017
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Finally got my rig running properly and I am currently running 2 gtx 1080 Aorus and 1 standard gtx 1080 on a 850w evga platinum. My question is I was looking to just pick up 3 gtx 1060 for around $250-300 since my motherboard can support 6 cards but was wondering if the psu could handle 3 more cards - i have not altered anything or over/under clocked psu or gpus everything is just out of box plug and play. Also out of curiosity I'm running awesomeminer and says I'm averaging $15 a day roughly does that seem about right with current setup?

As always thank you for all the help,
Jeremy
 
I have an 850w and am having trouble with two 1070s and 3 1060s.... Only tried for about 20 Minutes tonight though... Good luck.
 
That won’t work


If you haven’t undervolted each of your 1080ti is pulling about 255 watts. Your 1080 close to 200 and your cpu 50.

You could undervolt every thing using MSI afterburner to a target of 65 or 70% and probably pop on the 3 1060. Undervolted the 1080ti will pull 170 watts each and be nearly as fast as stock when you pump core speed up by about 100mhz and memory speed by about 590 MHz.

Do the same for the 1080 and the 1060

Undervolted should them be — roughly

175. 1080ti
175. 1080ti
140. 1080
80. 1060
80. 1060
80. 1060
50. Motherboard and CPU

=< 800 watts

That’ll work.
 
...it would work assuming he had PCIe power connections available, which he won't.
 
~800W power draw on an 850W power supply? That's a little too close for comfort for me. I'd probably go 1000W+.
 
I'm using the MasterWatt Maker 1200 for 6x GTX 1060s (6GB).
https://www.amazon.com/MasterWatt-Digital-All-Aluminum-Titanium-Efficiency/dp/B01FYD9SM8/

Runs great, even with things heavily overclocked, though I ended up reducing power limit to 70W per GPU to save on electricity.


Hey bud that makes no sense whatsoever. Sell that power supply and buy a Thermaltake gold 750 for $50 bucks. Pocket the other $350 --- or buy more cards to fill up the board.
https://slickdeals.net/f/11034939-7...gold-modular-power-supply-50ar?src=SiteSearch

Your six 1060's are using less than 500 watts - add another 50 watts for your motherboard/CPU and you're at most 550 watts.

your 1060's 6GB - use no more than 80 watts each if you clock them to 65% power target. (and then + 585 MEMORY, + 85 CORE -- should be ~stock speeds at 35% less power)

I have twelve 1060 and the motherboard/cpu on a single 1200 watt Thortec Thunderbolt Gold Certified power supply;.

....
Well I guess your going for the efficiency angle eh? highest class rating -- 50% pull?
 
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~800W power draw on an 850W power supply? That's a little too close for comfort for me. I'd probably go 1000W+.


to each his own - but I'd have no problem running a gold PSU up to ~90% day in and day out. Most of the gold certified, name brand PSU's can supply an extra 100 watts + in a 50* hot box in testing. I'm not using them in a hot box, and so that 50 is actually more like 150 watts to spare - under the worst circumstances!

And the original posters PSU is a platinum instead of the golds I use.

EVGA 850 Supernova P2 I'm assuming? yes? If so - 970 watts from the wall - 850 watts continous tested at 50*C without even breaking a sweat.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story4&reid=444
 
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Archaea Yeah, 1200W may be overkill now that I'm power limiting. Originally I was planning to overclock, and the PSU calculator apps said I needed 1000W, and the MasterWatt was the only thing I could find in that range at the time (at the huge ETH boom, so high-powered PSUs were all sold out).
 
dont run consumer psu's over 80% even good ones unless your prepared for a failure (a good quality psu wont kill anything but itself) i have killed MANY high end corsair, evga, and seasonic psu's before i found some server supplys that can run >%100 24/7 (out of ~50 psus running over 1 year i have yet to kill one)
 
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The main issue with pushing consumer power supplies past ROUGH BALLPARK 80% or so on a mining rig is twofold.

1) Occasional power spikes out of the cards CAN push you over the limit, or cause enough of a "sag" to cause issues.
2) The supply is NOT designed for 24/7 long term operation at that capacity level.

Server power supplies ARE designed to run at 100% capacity for months at a time, and normally have more reserve capacitance to handle "spikes".

Johnny Guru testing is only for what, an HOUR at most? Not a real good test of LONG TERM high-capacity operation - and his insistence that "sleeve bearing fans" even the fancy-name ones are fine kills pretty much ANY respect I have for his "rating system".


MOLEX power connections to run a riser are fine - IF you are careful about getting the pins lined up right when you insert the connector and don't insert/remove the connector a lot of times.
Plenty of capacity to handle the 75 watt rated draw of a PCI-E bus connection, just watch the WIRING and as a general rule don't run more than one riser from a single "MOLEX string" out of the power supply to avoid issues.
 
The main issue with pushing consumer power supplies past ROUGH BALLPARK 80% or so on a mining rig is twofold.

1) Occasional power spikes out of the cards CAN push you over the limit, or cause enough of a "sag" to cause issues.
2) The supply is NOT designed for 24/7 long term operation at that capacity level.

Server power supplies ARE designed to run at 100% capacity for months at a time, and normally have more reserve capacitance to handle "spikes".

Johnny Guru testing is only for what, an HOUR at most? Not a real good test of LONG TERM high-capacity operation - and his insistence that "sleeve bearing fans" even the fancy-name ones are fine kills pretty much ANY respect I have for his "rating system".


MOLEX power connections to run a riser are fine - IF you are careful about getting the pins lined up right when you insert the connector and don't insert/remove the connector a lot of times.
Plenty of capacity to handle the 75 watt rated draw of a PCI-E bus connection, just watch the WIRING and as a general rule don't run more than one riser from a single "MOLEX string" out of the power supply to avoid issues.
That’s really conservative approach. I know many people running three risers per string on gold rated PSUs. I personally limit it to 2. But I don’t share your fear about consumer PSUs. All of my PSUs on my nearly 40 cards are gold and most are at least 80% load. I buy and use gold certified.
 
gold certified means nothing to if the psu will die or even if it takes out another component when it dies.
 
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gold certified means nothing to if the psu will die or even if it takes out another component when it dies.
Yeah. F running $4-6k in gpus on bing bang $50 chinese power supplies unless you hate your gpus.
 
lol, pretty sure [H] forum members won't be using $50 Chinese "gold" power supplies... Seasonic, EVGA, etc are all very robust PSU's
 
lol, pretty sure [H] forum members won't be using $50 Chinese "gold" power supplies... Seasonic, EVGA, etc are all very robust PSU's

They won't kill the GPUs but most of even the high end consumer stuff will die running over 80% for a substantial period
 
They won't kill the GPUs but most of even the high end consumer stuff will die running over 80% for a substantial period

For those that oppose consumer power supplies.
What is your source for this stated position. Your own subset of limited experiences don’t make conclusive data sets for that statement.

Nor do mine.

However,

I know six guys that mine in my circle of local friends. All of us use consumer power supplies. There is the odd failure here or there of any component, but I certainly don’t think the PSU it’s at an abnormal rate from what I’ve heard my friends talk about, nor what I’ve experienced.
 
For those that oppose consumer power supplies.
What is your source for this stated position. Your own subset of limited experiences don’t make conclusive data sets for that statement.

Nor do mine.

However,

I know six guys that mine in my circle of local friends. All of us use consumer power supplies. There is the odd failure here or there of any component, but I certainly don’t think the PSU it’s at an abnormal rate from what I’ve heard my friends talk about, nor what I’ve experienced.
I build ALOT of rigs for myself and others. Out of over 30 high end consumer supply's there have been 5 failures in less then one year. Out of over 60 supemicro server supplies I have killed one. Out of 5 Dell server supply's I have killed 4. I ran the consumer PSUs at 60 to 80 percent the supemicro 80-100 percent and the dells 80 percent. None of the PSUs ever killed anything but themselves. With that said consumer PSUs are normally not designed for 100% load 24/7 for substantial periods of time. Some may take it better then others but if you get a large enough sample size you will notice a pattern. And the server supply's are quite abit cheaper and I buy them used on top of everything.
 
I build ALOT of rigs for myself and others. Out of over 30 high end consumer supply's there have been 5 failures in less then one year. Out of over 60 supemicro server supplies I have killed one. Out of 5 Dell server supply's I have killed 4. I ran the consumer PSUs at 60 to 80 percent the supemicro 80-100 percent and the dells 80 percent. None of the PSUs ever killed anything but themselves. With that said consumer PSUs are normally not designed for 100% load 24/7 for substantial periods of time. Some may take it better then others but if you get a large enough sample size you will notice a pattern. And the server supply's are quite abit cheaper and I buy them used on top of everything.

Kinda funny that 4/5 Dell PSU's have died that you've tested... I've had that same experience with HPC stuff in the datacenter. But you are right, most home / consumer grade power supplies aren't built to the same level or quality as server PSUs.... Also, higher voltage (208-240), the less "wear" seems to happen at higher loads.
 
I just bought an evga gold 1600w... Expensive, but very fucking nice. Running 6 1060s and 2 1070s... 9 8 pin vga lines... Pulling 940w mining zcash.
 
I just bought an evga gold 1600w... Expensive, but very fucking nice. Running 6 1060s and 2 1070s... 9 8 pin vga lines... Pulling 940w mining zcash.
My mixed 1070/ti rigs with 7 cards each pull 915w from the wall. Try dropping your power settings. I use 65% and only took about 8% hash rate hit with equihash.
 
My mixed 1070/ti rigs with 7 cards each pull 915w from the wall. Try dropping your power settings. I use 65% and only took about 8% hash rate hit with equihash.

Agreed.. I just got the rig setup so it needs some tuning but I have been too busy with family to get it done. Mining Eth they are pulling about 800w from the wall. Shitty thing is, two of my 1060's don't have the same memory as the other 4 so getting Eth stable was a PITA. Those two only get about 18 Mh/s with Eth compared to the 22 Mh/s for the other 4. They mine Zcash at the same speeds though.. When I get back to Zcash in a few days I'm going to give it a good look and drop the power. The whole box was getting about 3.6k sols/s at that power draw.
 
A server psu is better built for mining. They’re designed to run 24/7/365 at 92% load. Out off all the physical servers at work I’ve had one psu die in the last 5 years. Also, for the price they can’t be beat. The only downside is some are LOUD!
 
I have an 850w consumer PSU made by Silverstone that's been running since 2009.. Pulling 650w nonstop since January
 
I have an 850w consumer PSU made by Silverstone that's been running since 2009.. Pulling 650w nonstop since January
one psu isnt exactly a large enough sample size to draw a conclusion. and im not doughtiung there are some good concumer psu's i have had some running just as long but there is a trend in reliability between server psus and concumer and it is strong enough for me to recommend the server psu's any day over the more expensive consumer ones.
 
I'll give you that... Anecdotally... That isn't my only example, I just didn't want to have a wall of text... we all have our own sample size and base our opinions on that... I repurpose old gear forever.
 
I just picked up a Seasonic Prime 1000w 80+ Platinum PSU's for $200. Not a bad deal for a Seasonic.

Server PSU's are all going to be loud. HP's are a little quieter than the Dell or Equallogic though.
 
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