Here's a bit of info on AMD/Ati vs. Nvidia
http://news.cnet.com/8301-13924_3-9968992-64.html?tag=blI have been using Ati for a while and to me it comes down to what do you want? If its top performance then expect to pay top price. If you want a graphic card to give you decent visual experience in a game environment then you can go for mid-range and that's where Ati competes well.