For older games or if you have a smaller monitor IE a 19" i would suggest a 4830 , newer tech and a screamer card , but if you want to pursue some newer flashier games , maybe a 4850 or even a nvidia 250gtx , and then theres the upper crust of gaming uberness , the 4870 X2 and nvidia 295.But system spec's, games, and also budget would help us help you.