I am dual booting Windows 7 Ultimate 32-Bit Build 7000 Beta and Vista Ultimate 32-Bit SP2. Both OSs are fully updated.
Here's the deal,
1.Assassin's Creed:
Vista-30-35 FPS,Windows 45-50 FPS
2.NFS Undercover:
Vista-25-35 FPS with constant slowdowns.
Windows 7-35-40 FPS ,no slowdowns whatsoever,smooth as butter.
3.FarCry 2:
Vista-12-15 FPS.
Windows 7-20-30 FPS
But for some reason or the other I am not being able to install GTA IV. It's asking for some xlive.dll which I placed in sys32 but still it didn't seem to work. I installed GTA IV in XP SP2 compatibility mode as none others helped.
All the above benchmarks are from my Q6600,8800 GTS 512 G92(not SLIed),4GB DDR2 RAM 800 Mhz,P5N32-E-SLI rig with all the graphics settings maxed out in all the games mentioned above. I am using a 22" LCD monitor with the rig.
I am yet to try out SLI with Windows 7.
As for the drivers,Windows 7 had drivers for my LAN card,sound card,chipset,GPU and even my multimedia keyboard(Logitech G15) and mouse (LogitechMX518 ).
A querry here,do Vista drivers work on Windows 7? I need the latest nVidia drivers to enable SLI.