So I'm looking for a MacBook that can play games well. What I want to do is have a MacBook, play Fifa 12 on it (with good graphics and no lag) by connecting a couple of PS3 controllers to it. This will be hooked up to a mini projector via mini DP -> HD so I can play Fifa 12 on a MacBook with my friends. Now looking at the MacBooks, 15" seems the best for me. However, I would like to know the difference between the 2.2 GHz AMD Radeon HD 6750M 512MB and the 2.4 GHz 6770M 1GB. Will there be much of a difference? Both are quad core i7s. Also, I've watched a couple of videos on YouTube and I've seen people using BootCamp to play the games... why is that? Is there a big difference between the capabilities of OS X and Windows 7 in terms of playing games? Sorry I'm not much of a gamer. I usually use consoles, but I want to see if the setup mentioned above is possible, and if it's worth getting that.