Taking a setting at 1600x1200 with 16xAF, I saw a major increase in performance, particularly Company Of Heroes and Quake 4. Performance went up by 11% on COH and 42% on Quake 4! This shows that the drivers is still very raw on this card, with just a minor driver revision boosting up performance that much, it gives us quite a lot of hope for a fair bit of improvement to come. Let's hope for that!
In many non Anti-Aliasing, High Definition game settings, you have seen the X2900XT push ahead of the performance of it's closest competitor, the GeForce 8800GTS 640MB, sometimes by quite a large margin, sometimes falling behind or ahead by a small percentage. In a select few games, the GTS is slightly faster, and vice versa. When Anti-Aliasing is turned on, the X2900XT showed that it carries it off with great efficiency in games that the drivers are optimized for, performing significantly better than the GTS; while the AA efficiency is piss-poor in some games due to the raw driver which has not fully blossomed to take advantage of ATi's new GPU technology. Just take a look at how performance has boosted from Drivers 8.36 to 8.37, that shows the potential in performance growth... a whole lot of it to reap.