I was messing around the other day and made some changes just for the heck of it. I went with the Windows Standard and adjusted my background color to my liking. It sure does make one heck of a difference in the performance of things.
I don't have a powerful gaming laptop or anything, but it sure has enough power to run everything on 64 Bit Windows 7 just fine. It almost feels like enabling all the pretty eye candy inserts this little bottleneck. Try it for a little bit and you will see what I am talking about. It's kinda like going old school