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Is this PSU good enough for this higher end rig?

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I think ill go with 450water. You guys also said the Geforce 6800GS pulls more power than the 7800GT? Do I need a better PSU if i put a 6800GS in instead of the 7800GT? Or is 450 gonna be enough?
 
anand's uber gaming rig sucks down ~275 watts

but keep in mind a) those cards are factory overclocked b) they're using a not particularly efficient power supply c) that is power draw at the wall.

assuming 75% efficiency (which is probably giving the OCZ a tad too much credit) that computer is drawing just over 200 watts.

in other words, a strong 330 watt would be quite sufficient.
 
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