need psu advice!

Yeah, that 520W psu will be good enough. Don't worry. Unless you got dual cores, dual vid. cards, and the whole array, I would say go more, but no, you shouldn't have to worry. What vid. cards will you be using?
 
i'm thinking of getting any nvidia vid card with a geforce 6600 sli or higher. if i got the money maybe a 7800gtx with sli.
 
WEll, if you get two 7800gtx, I suggest a slightly higher psu, maybe, but if you're only running one cpu, not dual core or anything, it's still fine. It's perfectly fine for the 6600's. Your computer will be fine with that psu.
 
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