While the idea of comparing performance levels between the two operating systems sounded great on paper it wasn't too easy to complete in person. After taking a pair of identical Western Digital 250GB hard drives we put fresh installations of both operating systems on the respective drives and started benchmarking. We quickly found that DOOM 3, Quake 4 and PREY all do not run correctly on Vista making them useless for benchmarking purposes. Other games like X3: Reunion use StarForce software, which is blocked by Microsoft and rightly so. World of Warcraft works, but we did notice some tears in the screen and stutters that kept us from using it as a benchmark. We ended up using Call of Duty 2, DOOM 3, Far Cry, Serious Sam 2 and F.E.A.R. for our testing, but there was also a catch. Call of Duty 2 refused to run correctly on NVIDIA graphics cards, while it ran fine with ATI graphics cards. The same was also true for Far Cry which ran like a champ on NVIDIA cards, but wouldn't launch with ATI cards. So far I wouldn't call using Vista RC1 a "breakthrough experience" by any means, but I guess that's why they call it a release candidate.
Article Title: Gaming on Windows Vista - ATI versus NVIDIA
Article URL: http://www.legitreviews.com/article/385/1/