Quote Originally Posted by Caparroz View Post
The 2900xt has a massive BW. It's not like it's allwasted doing AA, but it definitively hurts. But that applies for all GPU designs. The real problem for R600 lacking a dedicated part for AA in the render back units is that it will use shader processing power for it, as pointed by the more in-depth reviews and DilTech.
Yep, so essentially, it's hurting in bandwidth(which, the HD 2900XT has more than enough) AND shader power.

Essentially, it takes two hits for turning on AA instead of one. Definitely not a good thing, and it's not something drivers can technically fix either. It's a hardware problem.