I have a 15" C2D 2.16, Radeon X1600 , 2 GB ram , 200GB 7200 rpm, Macbook Pro. I've played games on my MBP in OSX but every 'real' game demo i've played (ex. Civilization 4), my laptop goes straight to 6000rpm fans, and then the game crashes. If i install Windows XP (or Vista) and then play Call of Duty 4 on it, will the performance be better than games i've played in OSX? Also, would 3GB Ram be a big improvement for games, or does it have to do with the Graphics Card?