Enemy Territory: Quake Wars
In ET:QW, the GeForce 8800 GTX performs similarly regardless of the OS used in single card configuration. Once a second card is dropped in for SLI however, you can see that Vista performance takes a backseat to WinXP: the GeForce 8800 GTX SLI cards ran 8% faster in Windows XP versus Windows Vista 32-bit at 1600x1200. The performance trends for the GeForce 7900 GT are similar – single-card performance is the same regardless of OS used, but SLI scales a little better under WinXP.
Driver performance for the Radeon HD 2900 XT and X1950 Pro is also the same regardless of OS. Also keep in mind that while we do include CrossFire numbers for both cards, CrossFire has numerous graphical glitches in Quake Wars with the current 7.9 driver. We saw numerous missing textures, texture flashing, and other artifacts.