Originally Posted by
Drunkenvalley
You're better off with one HD 7970 if the price of the GTX 680 is in the roof. Which on pccasegear.com it certainly is, as the GTX 680 starts at 100 bucks above the HD 7970... In other words, go for the HD 7970.
While the GTX 680 is better per se, it's sure as heck not by a margin worth 100-200 bucks more. And I really have to emphasize that these two high-end cards are really quite close to each other when overclocked as far as they'll go. Just evening the clocks between the two cards almost nullifies the difference.
Usually, the differences that remain are blatantly favoring nVidia, whether it be an error on AMD's drivers, nVidia's drivers being more optimized for those games, or the game itself being made (presumably accidentally) more compatible with nVidia. However, it's a moot point; both cards still play really well, and drivers may in the future nullify the differences.