PREY

From the scores, it can be seen that the game PREY, the ATI RADEON HD 2900XT does perform well at 111.9fps versus 104.5 on the ref 8800GTX. The more important observation is that at high AA/AF combinations, the ASUS EAH2900XT performs better at 57.9 vs 47fps.

Looks like the 512 bits memory does help when high bandwith is required in high AA/AF at high resolutions.