Hello there! I got a 2008 unibody macbook pro, the 5,5 version one. core 2 duo 2,2ghz processor, 160 hd, 2gb ram, nvidia 9400m 256 mb ram. Ive been trying hard to play diablo with this machine so I started to look for how come my mbp couldn't properly run diablo 3. The primary symptom is constant lag in open scenery areas, it all slows down. As I was finding some info, I discovered that this GPU used the mbp RAM. 2 GB is already too little, so if the GPU shares ram, the little would turn out to be useless. SO I upgraded my ram to 8gb, BUT still, i can't see much of an improvement. Am I missing something? Please help!