I have an 8600M GT and it runs everything at Medium... It's not a Crysis-killer or anything but it does do what is expected...
The 8600M GT got a slightly higher 3DMark06 score...
http://www.notebookcheck.net/NVIDIA-GeForce-8600M-GT.3986.0.html
http://www.notebookcheck.net/NVIDIA-GeForce-9600M-GS.9450.0.html
Doesnt it show the 9600 to be 7700 and the 8600 to be 6175 in the 3d mark score?