ghostwalker

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Apr 21, 2006
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It says on the Nvidia site that the min wattage needed for the ultra is 500W. That being said it all depends on your PSU and whether it is a reliable and quality brand and also, how many amps there are on your +12V rail(s). I think that the ultra needs around 32A but I'm sure someone else can correct me if I'm wrong.
 

Jessejames690

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Oct 27, 2007
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Get a Enermax 850w Galaxy if your budget will run to that. I have a BFG 8800ultra running with this PSU and its great. However silverstone's psu are not that bad, so you may be ok running that.
 

mosdapwn

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Oct 12, 2007
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depends on what processor you have, but for most cases it would be enough , I'm running an overclocked gtx , a q6600 @ 3.8 and 4 hard disks with a 650psu .. so i'm guessing you won't have a problem