But it you want to go with amd then chose either a phenom ii 975 black edition (or phenom ii 965 black edition) or choose a A8 3870k unlocked
With the phenomii you could get a radeon hd 6870-6950 or a gtx 550ti-560ti which are all pretty good gpus that can run most games out there on high with 1280x800 resolution
With the A8 it has a good onboard gpu that can crossfire with other amd radeon hd 6000's but you need a good mobo to utilize this
Ive chosen all overclockers because thats the main thing. If you dont overclock you probabley wont catch up to the cpu standards of today.