The last few days I've been reading about GPU problems in the MBPs. I'm not too familiar with what sort of GPUs exist for notebooks and what not, and after reading peoples' suggestions for this card or that card, I was wondering if someone could shed some light on the differences between ATI vs NVIDIA... what makes one better than the other? Is there any real significance to the nomenclature of the different models? Or is that just how they ID the cards. (Like how an IS250 refers to the engine size, does the 8600 in our MBP cards signify something?) Yeah, just wanted to get a better grasp of the whole GPU world. Thanks!