I just bought a 13" late-2011 MacBook pro, with the i7 and bigger HD (cost about $700 more.) It doesn't play games that well-- Skyrim lags pretty badly except on Medium or below graphics, and even Minecraft can be slow unless I close all open programs. My laptop gets a 7724 on Geekbench right now, which seems pretty good to me, and I understand games would most benefit from a better graphics card (which isn't an option.) Will my computer benefit much from being upgraded to 6GB RAM? (I'm thinking of buying a 4GB stick and replacing one of the 2GB's.)