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Author Topic: Best Profitable Setup for 1200W PSU  (Read 2039 times)
LarryL
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May 07, 2017, 12:50:25 AM
 #1

hi guys,

im thinking about building a new mining rig. the ROI is not my first priority, i want to get the maximum of $ per day out of it with a 1200W psu. what card setup do you guys suggest for this goal? i tought about 3x gtx 1080 ti and 2x gtx 1070 but maybe you have a better suggestion.

thanks in advance
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Elder III
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May 07, 2017, 02:15:14 AM
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Well the maximum $ per day would be 5x GTX 1080 Ti with a power limit around 60% so that they only use ~150-155 watts each (may vary from GPU to GPU). Theoretically you could manage 6 at 150 watts but that is more then I would do personally. What PSU do you have?
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May 07, 2017, 02:34:15 AM
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You can run 6 GTX 1070's easily with -25% TDP (125W per card) as the only config change.  I have two rigs running this way nicely, each makes anywhere from $20-$40 a day depending on the market.  They run nice and cool this way as well, just need to good open air rig.  GTX 1080's and Ti would work as well, but I have no personal experience with them and there are a few on the forum here that can comment better on those.
LarryL
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May 07, 2017, 02:51:57 AM
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Well the maximum $ per day would be 5x GTX 1080 Ti with a power limit around 60% so that they only use ~150-155 watts each (may vary from GPU to GPU). Theoretically you could manage 6 at 150 watts but that is more then I would do personally. What PSU do you have?

dont have a PSU at the moment, want to check first what kind of rig i want to build. so maybe 5x 1080ti and 1x 1060 6gb should run easy?
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May 22, 2017, 09:42:16 PM
 #5

im running on asus z170 pro gaming (dont ask why this board, its a bit complicated, but has 3xPCIE16 and 3xPCIE1) 1x1080ti and there are 4x1070 (for now, dont have anough money for 6th card in total) on their way to me incl. evga g2 1300w psu (p2 1200 is unreachable ... high price in our shops or insanely long times of delivery .... MORE then month) ... dont know, if that 1080ti is able to properly work on only 60% tdp, but right now is on 75% (+160MHz core) and is eating about 180W .... as i know those 1070 can be undevoltaged on 70-75% tdp as well, so they can eat about 130-140W each .... there is still place for 1 card and i think, it will be another 1080ti, coz its counting power is realy insane (but i didnt try it on every algo, each miner is different on every algo and that need couple of days in testing and im planing/building only this 1 rig right now) ...

so calculation for psu:

mb+cpu+ram eatings +- 50W (i have cheap wattmeter)
1070 +-140*4 = 560W
1080ti +-180*2=360W
------------------------------------
around 970W BUT i will not recommend only 1kw psu ... i will need 2x8+6pin (for those 1080ti) and 4*single 8pin + (for safety) 6x sata/molex lines for riser cables (each line for 1 riser cable) and this hase only 1200w psu and not all of them
QuintLeo
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May 23, 2017, 12:13:30 AM
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You can run 6 GTX 1070's easily with -25% TDP (125W per card) as the only config change.  I have two rigs running this way nicely, each makes anywhere from $20-$40 a day depending on the market.  They run nice and cool this way as well, just need to good open air rig.  GTX 1080's and Ti would work as well, but I have no personal experience with them and there are a few on the forum here that can comment better on those.

 My 3-card "hybrid" 1070 rigs pull about 600 watts at the wall on a good gold PS despite pushing a top-end AMD A10 cpu hard on the GPU side.

 A 6 card "mining-specific" rig should be QUITE comfortable on a Seasonic X-1250 gold/X-1200 Plat or an EVGA 1300 G2 / 1200 P2.

 You could probably go with 1080 cards instead of the 1070s, if you keep the power limits down some - at least some 1070 cards (Gigabyte in specific) change the TDP to 180 watts in order to be able to support their higher clock rates, my Gigabyte 1080 card TDP is only 20 watts higher.


 The 1080 ti needs *2* PCI-E connectors (one 6-pin one Cool per card - there are exactly ZERO power supplies in the under-1500 watt range with enough PCI-E connectors to run 6 of those cards (and I think you have to go to 1600 watt power supplies to get to 12+ connectors) - which doesn't factor in whatever you have to use to power your risers.








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NetopyrMan
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May 23, 2017, 08:34:52 AM
 #7

if you realy wish to make rig from 6x1080ti you will need (evga p2) 1600W psu ... i know its a bit overkill but this is not about watts, its about power lines ... as i know, this one is possible to load properly all 6 (or 7) 1080ti with no problem and has enough cables for anything Wink

edited: and the best 1070 is right this one (dont know prices in other countries, but in Czech Rep. is thi the best 1070 you can get for the money):
Evga 1070 SC Gaming 8g Black Ed. (08G-P4-5173-KR) - high clocks and only 1x8pin
https://www.evga.com/products/product.aspx?pn=08G-P4-5173-KR
QuintLeo
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May 24, 2017, 01:50:36 AM
 #8


edited: and the best 1070 is right this one (dont know prices in other countries, but in Czech Rep. is thi the best 1070 you can get for the money):
Evga 1070 SC Gaming 8g Black Ed. (08G-P4-5173-KR) - high clocks and only 1x8pin
https://www.evga.com/products/product.aspx?pn=08G-P4-5173-KR

 I've never seen a 1070 that had any power setup OTHER THAN a single 8-pin PCI-E - even my 180 watt Gigabytes don't come close to the combined 225 watt specification for 8 pin PCI-E power + power drawn from the bus.
 I doubt anyone makes a 1080 with 2 power connectors for the same reason - they only have a little higher TDP than the 1070 does (my Gigabyte is 200 watt, but that's probably a tossup for THE highest TDP 1080 card anyone makes).

 PCI-E spec (which is VERY VERY conservative vs the spec for the connector itself) is 75 watts for a 6-pin PCI-E, 150 watts for an 8-pin PCI-E, and I forget if it's 70 or 75 watts from a PCI-E slot by spec.

 1080 ti FE is 250 watts, which is WHY it needs more than one connector (I suspect some of the aftermarket models are even higher).



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Elder III
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May 24, 2017, 02:13:53 AM
 #9

You can run 6 GTX 1070's easily with -25% TDP (125W per card) as the only config change.  I have two rigs running this way nicely, each makes anywhere from $20-$40 a day depending on the market.  They run nice and cool this way as well, just need to good open air rig.  GTX 1080's and Ti would work as well, but I have no personal experience with them and there are a few on the forum here that can comment better on those.



 The 1080 ti needs *2* PCI-E connectors (one 6-pin one Cool per card - there are exactly ZERO power supplies in the under-1500 watt range with enough PCI-E connectors to run 6 of those cards (and I think you have to go to 1600 watt power supplies to get to 12+ connectors) - which doesn't factor in whatever you have to use to power your risers.









Yep, that is true, we had to get a 1600 watt PSU in order to power our rig with 6 x GTX 1080 Ti. Currently the rig only uses ~1027 watts at the wall (power limit at 62% for best efficiency), but in order to have sufficient cables/connectors that was the best single PSU option. Ideally a server PSU would be used to power all or most of the GPUs, but they are too loud and high pitched for me to tolerate in a living space.
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