>I'm building a Linux (Ubuntu) box. Somehow I got the impression that I should go with
> an NVIDIA card (and not ATI). Am I totally on crack? Someone please tell me b/c this 7600 is tempting.
What have they been telling you? Linux was NOT DESIGNED to run Windows games, although it can do so sometimes, for particular cases (using a Windows to linux translator like WINE or the commercial Cedega.). Don't have high expectations. Getting each individual game to even run is a challenge, and your best bet is to see if anyone has the game already running. The old hands are good at working it out, but anybody inexperienced is in for a challenge he is not up to.
If current and trendy games are your passion, you might just as wll forget about linux.
Yes, a lot linux people complain that ATi is deficient compared to NVIDIA in the propriety, not open souce, drivers it puts out. Purists believe you should not be using closed source drivers at all, and are trying to prevent you from doing so to the extent they can. But the open source drivers, not written or endorsed by ATi, though more reliable, run far slower. But the complaint has more to do with using the new, fancier alternative window managers that are just barely stable at this point. What is a window manager and why does linux have many alternative ones? If you don't know, that tells you something about how tough it is going to be to get up the learning curve, in order that you might get this alternative stuff debugged and working on your set up, if you care to. Of course, if you stick with straight Ubuntu, and straight linux programs, you don't need to know any of that. Windows games are not linux programs. There is no official Ubuntu support for any Windows programs, but quite a lot of people are running Windows programs.
There are also quite a lot of people that say ATi cards are running just fine for them. I don't know what to make of that. I suppose it depends on what you attempt to do, and how good you are at tracking down the correct info. It just happens that the least accomplished and most frustrated make the most noise, as always.
BTW, I have yet to see my first Windows game running on Ubuntu, and I have spent quite a lot of time on it.