I'd recommend a better graphics card, you can save money by going amd. You will end up spending less money on the motherboard and processor and will have about 50-150 more $ towards a better gfx card. I'd recommend a phenom ii x3 or x4. Try getting a hd 5770+
Newegg.com - AMD Phenom II X4 945 Deneb 3.0GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 95W Quad-Core Desktop Processor HDX945WFGMBOX
Newegg.com - AMD Phenom II X4 945 Deneb 3.0GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 95W Quad-Core Desktop Processor HDX945WFGMBOX