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Quake Wars runs with OpenGL and reacts very differently to SLI and CrossFire. Whereas the older graphics chips do at least benefit from the doubling of 3D power in the higher resolutions, the Radeon HD 4850, HD 4870, GeForce GTX 260 and GTX 280 show no improvement. The new graphics chips require a lot of CPU performance, and the older engine from id hardly challenges these GPUs.
Only the test systems with the Radeon HD 3650 and GeForce 8600 have trouble coping at 1680x1050 and 1920x1200 pixel resolutions with anti-aliasing—all other graphics chips and test resolution combinations are smooth. In CrossFire mode, 3D objects flicker with the Radeon HD 3650. At the lower resolutions without anti-aliasing, the graphics cards reach the CPU limit, where the maximum frame rate fluctuates badly—up to 5 fps is possible as an average result.