Windows 7 series: NVIDIA and AMD Graphics and Gaming Performance
 

As I mentioned on the one of the first pages of this article (that was a LOONG time ago...) the only fair comparison for looking at pure Vista versus Windows 7 gaming results is with AMD's graphics cards and their unified Catalyst 9.3 driver that supports both operating systems. To that end, the AMD situation showed us that users will likely see very modest performance gains moving over from a Windows Vista gaming system to a Windows 7-based PC. Considering how early we are into the life of Windows 7 (it is still in beta after all), this is a very welcome shift from how things worked before Windows Vista's release. In fact, there are still some gamers that are likely refusing to move to Vista because of apparent performance degradation compared to Windows XP. (Those differences are long gone now, btw.)

http://www.pcper.com/article.php?aid...e=expert&pid=1