My 2 cents about power supply, unless you plan on running 4x geforce 295's or similar setup I wouldnt push it past 700-750, theres no way your computer will need that much, I run a i7 920(OCed to 3.6 currently and staying there, had it at 4.2ghz but there is abseloutly no point in running that normaly) with a geforce295 on a 650 myself. And still on the same topic, I would recommend you do a bit of research on the supply and actualy buy a good one. Cheaper ones usualy got a larger margin of waste(not so sure how to explain this in english, but hope you catch my meaning).