Id dump like $80 more into that and get a geforce 88xx series graphics card, those are dx 10 hardware certified IIRC. I think you're throwing your money away with the 700w PSU, you'd be perfectly fine with a 500w, especially since the core 2 duos use less power. Dunno how I feel about the ECS mobo either. Personally, I'd stick with MSI, Gigabyte, or ASUS, but thats just me.