[Feuerfalke]

Catalyst AI features advanced texture filtering and image enhancements. It has nothing to do with running a game in crossfire-mode or not.

Switching the ID with ATT does not "enable" features. It just changes the way DX communicates them with the graphics card. As such some features might look different, maybe even "better", but it's usually slower and it decreases rendering-speed, as some features are rendered in emulation-mode. On older games, of course, this emulation won't have much of an impact with modern graphics cards.


To the ATI vs nVidia fanwar: Both have their pros and cons. It may not be satisfying, but it is as simple as that. Some games work better with card x, some with card y. And this not necessarily only changes from ATI to nVidia, but also between driver versions, chipsets and of course with the combination of hardware you use with the cards. I used both, ATI and nVidia and I have made many good and bad experiences with either.