This one has been bugging me for some years now. Starting with GTA IV, seen in Saints Row II and now again in Witcher II. Some games that have the official NVIDIA tralier in them will most likely be almost unplayable from a technical point of view on many ATI  systems. And those games mentioned are only the ones I know from my personal experience.

I am starting to wonder if the developers intentionally make those games less compatible with ATI cards, because they get money from NVIDIA? Or is it just a coincidence that there are no known cases of a top-selling title that works better with ATI cards and has major screw-ups with NVIDIA?

I don't know what you think about it, but the way I see it, ATI cards become more and more unbuyable. If more games devote themselves to NVIDIA and ATI does not manage to prevent compatibility issues with upcoming top titles, there will be no other choice than buying NVIDIA cards exclusively.

And now I am back to not playing the Witcher II, because it is so damn unplayably slow that I like to punch my ATI card in the face... or the marketing guy from NVIDIA... or the guys that made the Witcher II.