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Z61 wrote You cannot play most cod games on Mac and you said you want to play mw3, go with windows.

What are you talking about? you can play Cod up to MW2, you obviously have no experience with macs.

OT: Macs aren't really meant for gaming but it could run pretty smooth on low end games like Amnesia the dark descent, TF2, Cod 4, Cod waw, starcraft, diablo 3, etc.

BTW my graphic card on the mac is a NVIDIA GTX 320M

Exactly, my Mac can run games well, it's just not the best for gaming. I have the same graphics card, I know this isn't really relevant but I could run amnesia better on my Mac then on my PC