What's the Best PSU for my GTX 1070 mining rig (alts)

[CybeRoky]

I have one stable rig with Corsair PSU CS750M and 4 x KFA2 GTX 1070 mini (1x8pin)
120 Mh/s = 480W

I have ordered 4 x ZOTAC GTX 1070 AMP Core Edition (2x8pin) and I want expand my rig first with 4 and later maybe with full 9 GPU (my mobo is Asus Z270-A)

What type of additional PSU did you recommend for me (cost matters)? (Corasir or EVGA) Now for 4 and later maybe for 5 additional GPU. I am concern with all this new 2x8 pins? Will I get enough cables next to? :/

Tnx

[cryptocoinfarmer]

I would recommend to look at:
HX1200i Link: http://www.corsair.com/en-eu/hxi-series-hx1200i-high-performance-atx-power-supply-1200-watt-80-plus-platinum-certified-psu
or you can choose EVGA SuperNOVA 1300 G2 link: https://www.evga.com/products/product.aspx?pn=120-G2-1300-XR  
 

Information and calculation of energy consumption:
 
ZOTAC GTX 1070 AMP Core Edition    
Power Consumption 220W 18A  x 4 = 880w 72A
Information is taken from a website. You could power limit the cards for less consumption.  
 
KFA2 GTX 1070 mini
Power Consumption 150W 12.5A x 4 =  600w 50A
Information is taken from a website. You could power limit the cards for less consumption.

[CybeRoky]

@cryptocoinfarmer tnx

any for less $ that will do the job? This is to expansive :/

I will try to reduce stock power as well.

[wacko]

1000W is more than enough even for 5 GTX 1070s, provided you do it right (= not running them as stock voltage). Plenty of good 1kw PSUs out there. Corsair RM, HX and AX series are all good. Coolermaster V1000/V1200. All gold and platinum EVGA's. Just check their descriptions to make sure they've got enough 6/8-pin pci-e connectors.

[shibob]

I have 2 rigs of 1070 cards: 1 rig's using EVGA SuperNOVA 1300 G2 (~275$), and another's using the cheaper PSU Great Wall Golden Gigantic Dragon 1250W (~154$). So far so good!

[Lancusters]

In my rig I use a separate power supply for the GPU. For these purposes, I use a modified server power supply. One power supply is enough for 6 GPU 6x6+2 pin. The cost of this power supply is $ 100. The computer is running on a 400 watt power supply. I think this scheme is cheaper than all the rest.

[crocozino]

well, if you will run your cards with lower setting for power limit, like 70% so it would be aprox 105-110W each
so I think if you will not outlimit those limits you will be ok even with something cheaper then 1KW - Corsair 850W will be good

[wacko]

well, if you will run your cards with lower setting for power limit, like 70% so it would be aprox 105-110W each
so I think if you will not outlimit those limits you will be ok even with something cheaper then 1KW - Corsair 850W will be good

That is true in terms of power consumption, but if he goes with 5 cards, he'll need 10 pci-e connectors and then 5 peripheral molex/sata cables for the risers. Not many 850W PSUs come with 10 pci-e connectors, it's usually only 1KW+ units that have enough.

[Helios45]

How about a 6x 1070s rig, does a 1000W PSU provide enough power and PCI-E connectors ?

[halker2010]

I hardly recommend you to going for cooler master or corsair because i had some extreme issues with shitty power supplies a nice 1200 w should be enough.

[QuintLeo]

Most of my rigs run the Seasonic X-850 gold (which sadly is no longer in production and low availability) though I have one running the Seasonic SS-860 model (basically the Platinum version of the same PS) which DOES still seem to be available.
A few (noteably my B250 Pro 19-slot MB based rig using 2 PS so far) run the EVGA G2 850 (which has variable availability lately, not sure if it's still in production or not offhand).

 There are also 750 watt versions of those power supplies, and EVGA has their P2 line that are Platinum versions of the same supplies.

 Cooler Master and Corsair are HIGHLY VARIABLE on their power supplies (to be fair, so is EVGA) because they don't make their own supplies and different models are made by different manufacturers, some good some garbage.

 I strongly recommend AGAINST the Seasonic "Focus" and "Prime" lines, and the EVGA G3 line, as they moved to using junk "fancy name" sleeve bearing fans THAT DO NOT LAST IN A HIGH TEMP HIGH LOAD ENVIRONMENT LIKE MINING.


 6 x 1070 running at EFFICIENT settings will be OK on a good 1000 - my 5 card rigs with a mix of 1070/1070ti/1080 at efficient settings (100-110 watt TDP) and high-power-usage FX-83xx CPUs fit comfortably on those power supplies I mentioned above.

 PCI-E connectors are enough, if you power your risers from MOLEX - but the cards that have to share a "dual" PCI-E cable might be squeezed a little too close for GOOD cooling. Worst case, angle them away from each other at the bracket end.
 The Seasonics are better there, as they have one more "PCI-E" designated connector on the PS (and only have to use ONE dual cable) than the EVGA model does - though EVGA gives you a bit longer cable length between connectors on their "dual" cables.

[QuintLeo]

well, if you will run your cards with lower setting for power limit, like 70% so it would be aprox 105-110W each
so I think if you will not outlimit those limits you will be ok even with something cheaper then 1KW - Corsair 850W will be good

That is true in terms of power consumption, but if he goes with 5 cards, he'll need 10 pci-e connectors and then 5 peripheral molex/sata cables for the risers. Not many 850W PSUs come with 10 pci-e connectors, it's usually only 1KW+ units that have enough.

 VERY FEW 1070 cards need more than a single 8-pin (or 6+2 pin) PCI-E power connector.
 Ditto 1070 ti cards - I'm not aware of ANY of those (so far) that need more than one connector.
 1080 it's more common but a lot of them are still single connector.

 That monster MSI Gaming thing with the 240 watt TDP rating is the only one I know of for sure, but there MIGHT one or more others I'm not aware of.


 SATA is a VERY VERY BAD IDEA for riser usage - the connector ITSELF is only rated for 54 watts MAX (3 connectors at 1.5 amps each), the PCI-E spec calls for up to 75 watts draw out of the PCI-E BUS connector and many cards have been shown to pull a little MORE THAN THAT (specifically including some AMD RX 470/480 cards).

 "MOLEX" connectors on the other hand are rated for 13 AMPS per pin used (normal computer usage is 1 x 5 VDC, 1 x 12 VDC, 2 grounds) for 156 watts rated capacity - which is PLENTY for PCI-E bus power.

[wacko]

VERY FEW 1070 cards need more than a single 8-pin (or 6+2 pin) PCI-E power connector.
 Ditto 1070 ti cards - I'm not aware of ANY of those (so far) that need more than one connector.

Yeah, I know that, but if you check the topic starter's question you'll understand why it was suggested. 

[shibob]

Have anyone got the problem with ESD? 1 of my rig regularly shutdown and when I touch it, it likes I'm shocked in a second with that spike.

[CybeRoky]

I think I will pick this one: 1000 Watt EVGA SuperNOVA G3 Modular 80+ Gold it has a lot of possibilities for connecting GPU-s

https://www.evga.com/products/product.aspx?pn=220-G3-1000-X1