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3-way SLI GTX 580 PSU requirements?

Last response: in Graphics & Displays
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June 19, 2011 8:19:49 AM

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

One GeForce GTX 580 will consume 350W+ of power at 100% load. Not to mention the power draw from your CPU, RAM, motherboard, and other components.

Will the silverstone 1,500W PSU fully power a 3-way SLI GTX 580 system?
June 19, 2011 8:28:25 AM

350W Each? Something's not right there.
On Nvidia's official site, they list the card power at 244W each.

I know I'm still over-compensating here, but I think you would be better off with a Corsair AX1200W. I'm not sure on pricing on PSU's at the moment but I'm sure others will have better alternatives.

EDIT: I forgot to say yes, it will power the 3-way 580's (the PSU's you and I mentioned).
a b U Graphics card
June 19, 2011 9:38:54 AM

I don't think you get 350w per card. Probably around 300w in some cases so a 1.5kw psu will suffice with room to overclock your CPU and video cards also.

Video card, CPU, Motherboard, these are the biggest power consumers, in that order inside a PC(from gamer lvl up). The rest do not use that much power.
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a b U Graphics card
June 19, 2011 12:43:54 PM

joytech's got it right. 3 way GTX580's will pull about 60 amps - 720 watts, peaking at 70 amps. Figure 120 watts for the CPU, 100 watts max for motherboard and memory, and say 50 watts for 2 hard drives and a non-BlueRay optical.

Those are worst case, peak estimates so a good 1200 watt PSU would be enough.

I prefer to operate a PSU at around 50 - 70% of capacity, so I'd use a 1500 watt PSU.
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