ChrisRay, when you have some time, it would be very interesting to see how fps changes in FarCry when you use the various modes detailed in your review. I suspect that we would see a relatively small performance hit when AF is applied to the 6800 cards if the aniso and tri optimizations are both enabled in the drivers.
Finally, generally, what are your thoughts on the image quality on the 6800 when using performance mode with tri and aniso optimizations enabled?
Sometimes it works, Sometimes it wont. However performance + Tril Optimisations + AF optimisations presents very noticable banding,
Performance + Tril Optimisations is usually ok, It depends on game though, sometimes Anistropic Optimisations cause no harm, Sometimes their results arent pretty.
The reason AF in High Performance/Performance mode is so cheap is because AF is reverted all the way back to Bilinear filtering when the AF opts are on.