Originally Posted by Aleksander Dishnica
I cannot make other differences if mdsx1950 doesnt publish his results, at least in x86.
The fps are higher on xp than windows 7. The least you can do to distinguish it, is in need for speed most wanted.
Yup, I'm totally with ya, man - I've seen it myself in the handful of scenarios I've checked this. Every single time XP was significantly better. My suspicion is the protected video path DRM they've infected Vista and later with is slowing down performance.
I reckon that in just about every scenario XP will be faster than Vista or 7. The only time the later OS's seem to match it, is where the frame rate is already in the 40-70fps range, ie quite low and on high end hardware. I saw an ExtremeTech article on this about a year ago using Vista. I would have liked to have seen a greater range of testing from them, including games that would normally run much faster than what they had there.
Now, for anyone that wants to challenge my assertion, no I'm not prepared to spend lots of time and hassle checking this out! It just looks very likely from what I've seen.