GTX 580 SLI Upgrade Question Help Appreciated!

[Kramer0526]

Hello all, I'm looking to upgrade my system a bit with some new graphics and just have a question pertaining to my power supply. Given my current system (see below), how big of a power supply will I need to run it with 2 new 580's?

EVGA x58 SLI mobo (dk what model right now)
i7 930 quad 2.8 OC 3.3-3.5
3x2Gb Muskin Redline
EVGA GTX 470 (to be replaced..)
Corsair 850W PSU
1 Hard drive, 1 optical drive, 2 120mm fans (the pic is old)

Also, is there anything else I should consider in accommodating these 2 boards?

thanks!

pic to make it worth your while..

 

[skidude]

I'd say it would be right on the edge, especially because you have an OC'ed CPU. Full power consumption of SLI GTX 580's can be seen here:

http://www.guru3d.com/article/geforce-gtx-580-sli-review/14

I'd go with a 900-1000W PSU with at least 70A on the +12V rail to be safe.

 

[salvage-this]

I agree with skidude. 850w is just on the edge of what will run it.

 

[jonnyp11]

well i looked on the newegg calc and that setup asked for 650 with the 580, then the card itself wants 600 min, don't see how just overclocking the cpu would add that much more.

and also if you read the article directly below the consumption that 719w is from the wall socket meaning the entire system was using that much, so that 850 is more than enough.