I read somewhere that NV's DX10-capable chips don't have certain features that X.org used to accelerate 2D performance. Sadly, I can't find that reference anymore.
No, actually.Remember the Geforce FX times, where not the full screen was antialiased to get some more fps..
Nvidia earned all of Linuxdom's loyalty by being an early h/w supporter, but AMD has also been a long-time supporter, and is making a concerted effort to make up for ATI's past sins.
Too bad for AMD that my existing kit (especially after i bumped up to 8GB RAM for only $85) is more than fast enough for my needs.