I am running win 7 under parallels 7 but am wondering how much of a real world speed bump I would get if I setup a bootcamp partition and used it when only wanting windows programs.
Check out this link http://guides.macrumors.com/A_Begin...f_Using_Windows_Boot_Camp_over_Virtualization
I use BootCamp more for compatibility with latest games than for speed. The games that work in Parallels work good enough that they are playable/enjoyable but if you look for it you will definitely see a decrease in FPS when they are run in Parallels compared to natively.