This video shows a few features of windows 7 and show exteel running with gameguard working on 64bit version of windows 7 Ultimate RC. This was done on an Acer Extensa 4420 laptop cpu and ram you will see in the video. The GPU is ATI Radeon X1250 256MB dedicated (867MB shared) ATI Catalyst 9.13 vista 64bit drivers.
https://www.youtube.com/watch?v=bnp28_6-AUY