I just wanted to ring in on this subject... nVidia has long supported Linux. It supports full hardware acceleration even on much older cards. That's not the case with ATi. ATi's stance is that it supports relatively newer cards, but when cards get older, they're forced to use the open source driver. Now, I'm all for open source, and I think, in general, open source is good. However, I do understand why ATi would probably hold back some information so that it would not leak out to the competition and, therefore, the open source driver is doomed to non-parity with the closed source driver. It is my philosophy to support those that support Linux, and to support first and foremost, those that do a better job of support. Therefore, I buy nVidia. When I built my current machine, there were ATi cards that performed better for the money than my 275GTX card, but my money still goes to nVidia.