Originally posted by Freeman420
I have a 6600gt, and it is awesome. I play Half-Life 2 on 1024X768 and 8xAA 8xAF and it flows beautifully. If you really want to play on the very max settings though, you might want a 6800gt, but at this point it would probably just be smarter to wait for the nex-gen ATI and Nvidia cards to be released then buy either a 6800gt or a 6800 ultra because they'll be much cheaper.
The 6600GT maxes out at 4X AA, when you go above that it sets it to nothing.
Neither the 6600GT nor 6800GT will play all the best games on full for a few years.
Your best bet is probolly to get a 6800GT or wait for the next generation cards