Re: my build
Corsair has some good modular power supplies. They have a 650w one iirc.
And like I said before, going phenom II will get you a much better gaming rig. There is no noticeable difference between i7 930 and phenom II 965, but it will save you enough money to get a 5850.
If you insist on going i7, buy a 5770. Then Xfire a second one later and it will beat a 5870.
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