how much better is the nvidia gt650m 512mb than the HD6770m 1gb which is better im not sure if its been answered or not. i can get a good deal on the high end late 2011 model is the reason im asking. im not planning on doing hardcore gaming with my macbook but i do play them from time to time. looking to play D3, Hawk3n when it comes out and probably the secret world. i also make music and want to have garageband and the whole OSX experience. which would be best?