Help With Processor/GFX Card upgrade?

600w is pretty good. Get an ASUS PGA-941 socket ATX motherboard AM3 and buy an amd 4 or 6 core processor. As far as graphics cards go id get a HD 5850. I have one i paid 150 + shipping(about 170 dollars on new egg) and it plays crysis 2 maxed out with no problems. And if your on a budget get the 5770. Look at a RAM upgrade too. check out buy.com thats where i got all my comp stuff from. And if you get a new psu go with Corsair.