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520W enough for gtx 580?

post #1 of 10
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I have the SeaSonic S12II 520 Bronze 520W (sig rig). I am thinking of upgrading my 5850 to a gtx580. Will my PSU survive with that inside? The PSU does have 40a on the 12v rail. I have a 850W psu but I am honestly to lazy to properly rewire my whole case at this point LOL.

Thanks
    
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post #2 of 10
That's under the recommend...(600w 12v 24a) I guess you could try but I always like to go overboard on the power.
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post #3 of 10
It'll work. A good 500W will power a GTX 580.
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post #4 of 10
It will pull 244W max

But looking at your rig I will honestly say knock the 850 in,

Your rig will run on that powersupply but it will be under immense load and will cause it to fail after time
post #5 of 10
Its a quality unit, will work most likely, might cut out with CPU and GPU on full load. I'd give it a shot. Otherwise pull ur finger out and get the 850 in.
Edited by andrewmchugh - 7/26/11 at 1:15pm
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post #6 of 10
You're fine. The GTX580 only uses roughly 11 watts more under maximum load than the GTX480. I ran my AMD 955 with a GTX480 on my Corsair HX520 with no problems at all.
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post #7 of 10
Since you have the 850w you might as well use it because there's a good chance that 520w will not be enough.
Edited by Crecente - 7/26/11 at 1:28pm
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post #8 of 10
Whatever you do, DO NOT overclock the GTX 580. You should be just about fine, but I'd still take 850w to be on the safer side since it will be cutting it pretty close.
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post #9 of 10
I'd take the 850w...520 seems a bit light for a GTX 580
    
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post #10 of 10
The S12II 520 is perfectly fine for a single GTX 580.
Check out the numbers at http://www.anandtech.com/show/4008/n...rce-gtx-580/17. Those wattages were measured at the wall. The S12II can deliver 480W@12V and they were drawing ~384W from the PSU during those tests. You have nothing to worry about.
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