Anandtech has posted a driver performance comparsion review between ATI and nVidia.

One of the most controversial topics when it comes to driver support is Windows 2000 support and performance. Microsoft´s original intention for Windows 2000 was for it to be a professional/corporate-only Operating System, leaving Windows 98 and later, Windows ME for the home user. Unfortunately this strategy almost completely ignores a good portion of the market that happens to be quite a few AnandTech readers, the power user, or the hardware enthusiast. Microsoft made it very clear to the graphics manufacturers that Windows 2000 wasn´t to be a gaming OS, however the users definitely found it very well suited to their needs.

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