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GTX 580 sli power requirements?

post #1 of 38
Thread Starter 
hi all, in my rig, ill be running the i5 2500k overclocked to ~4 GHz and 2 evga superclocked gtx 580's and I did some power calcs and figured 850w was plenty.
is this a good enough psu for me?

http://www.microcenter.com/single_product_results.phtml?product_id=0356836

i have a microcenter close by, so its very convenient

thanks much!
post #2 of 38
you're gonna need 950w or more for overclocking headroom thumb.gif
Edited by K62-RIG - 1/26/12 at 6:13pm
post #3 of 38
A single 580 can draw upwards of ~350 watts under the right conditions so I would step up to a 1000w personally. $30-40 more if you stick with OCZ. The amperage delivery is the more important factor, and that OCZ will work just fine.
post #4 of 38
A (GOOD) 750 W would run that but wouldn't leave you much headroom for OC.

Like said 850W would be plenty.

Later:D
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post #5 of 38
 
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post #6 of 38
need a good 850w PSU to OC
my experience, GTX580 SLI on 850w can OC up to 920MHz
upgraded to 1000w PSU, OCable up to 960MHz
post #7 of 38
Thread Starter 
Quote:
Originally Posted by owikh84 View Post

need a good 850w PSU to OC
my experience, GTX580 SLI on 850w can OC up to 920MHz
upgraded to 1000w PSU, OCable up to 960MHz

I was talking about the processor with the oc its an i5 2500k
post #8 of 38
Thread Starter 
how much headroom do you think for cpu oc? i was hoping for at least 4ghz
post #9 of 38
That's why i revised my statement and said 950w mate. Gives you headroom for oc'ing. biggrin.gif
post #10 of 38
http://www.newegg.com/Product/Product.aspx?Item=N82E16817256057

if you really want a great PSU, it's gonna cost a pretty penny but the AX1200
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