Over at Firing Squad they put together a test to see exactly which Windows OS delivers the best gaming performance.
I’ll spoil the results with this quote:
While there were a couple of cases where WinXP outran Windows 7 and Vista, for the most part Windows 7 wins more than it loses, especially when you factor in multi-GPU technologies like SLI and CrossFire.
So Windows 7 looks like the winner.
Of course, that doesn’t tell you how close things were, so you’ll have to go take a look. The big surprise was 64-bit XP, but I suppose that has to do with the sort of driver support it gets.
Things look good for Windows 7 when it comes out. Of course, companies ilke Dell won’t be able to charge us $99 for XP “downgrades” any more, but then we shouldn’t need them any more.