I recently bought two systems: iMac Core Duo BTO 2.0/2 gig RAM /256 VRAM upgrade MacBook (white) core duo 2.0/1 gig RAM Playing Quake 4 (with the 1.2 intel update) on the iMac is great: I can use all maxed-out settings (except ultra resolution). On the MacBook, I can only use it on the lowest posible settings, or it is really not playable. Why do I post this? Because there was a very nebulous answer about how important the video cards are. Some commented that the integrated video in the Intel chip (Macbook) is not as bad as others describe. Simply put, it sucks for gaming. I got the maxed-out iMac for HD-video editing from my new sony HD camera, so it was nice to be able to game on that one.