If one choses to use Geforce 9600 instead of the 9400M, for example, to make 3D, the video chip quickly overheats and the image is scrambled and becomes illegible. There is a big chance that Apple will propose an EFI update very quickly for these machines in order to modify the behavior of their cooling system when one uses the 9600 to avoid this climb to a too high temperature.
We had noted during our first tests on the 15" model that the CPU could heat extremely, and even exceed 100 degrees. But to the contrary the 17" never had problem with the display.
