Ok your cpu wont be the bottleneck for most new graphics cards. your cpu will bottleneck with higher settings with lots of AI or physics with new programs or games wanting newer cpus for best settings. A 8800GS,9600gt or 8800GT would be a good card to get. If you want ATI 3850,3870 and maybe 4850 would be fine. But your Cpu has at least another good year left before you cant play games on high.