I only game in Single Player Campaign but I sure can notice a huge increase in everything I have played on 7 ultimate x64 that I had also played in Vista Ultimate x64. + 10 on what some of you guys are saying about the footprint and resource hog that is Vista.
This is all "Seat of the Pants" benchmarks but my butt is pretty good at it since I usually don't do benchmark apps (to complex for me really).
I have played the following games w/o a single glitch and w/o tweaking 7 (or vista) one bit... I am not a guru so tweaking is not part of my daily routines
Sometimes, I have gone through them a couple or few times, others, I have left at the half way mark cos I couldn't endure the repetitiveness anymore but that's not really here nor there
Far Cry 2 .....
Half Life 2 + Ep 1 + Ep 2 ..... No need to run in Comp Mode at all.
Fallout 3 ..... Couldn't get out of the Bunker, to tedious for me.
Crysis ...... I'll be trying the x64 next, didn't do it the first time out.
Vista = noticed some hesitation in fps at some intermittent times, speeds were fast, graphics awesome.
Win 7 = No hesitations what so ever, slightly faster speed increments as well, awesome graphics, perhaps crispier and more solid all around.
Could not be happier with the OS, I don't use the Eye candy side of it at all (Media Center) so I can testify if this is better than Vista but, when it comes to games... the difference is like Night & Day
Two Thumbs up