Well, I would up the power supply to 750W, and I personally prefer nVidia graphics cards to AMD Radeons. Nothing wrong with the Radeon video cards, it's just that I use Linux a lot and their drivers are just plain better for that. I only run Windows in a virtual machine, so I can't say what their game performance is like, other than what I read in various reviews. Those basically say that nVidia and AMD play leapfrog with each other in the price/performance game, so who is better/cheaper depends upon the day of the week... :-)
rubberman
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For what you are building, the 500w psu you have picked will do fine :).
I do not think the 6770 will be up to the job though if you want decent frame rates. A 6850 or 6870 would be a better choice.
crunchie
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