Hi, I have the "collectors edition" Macbook aluminium with 2GB of RAM. I want to upgrade to 4GB now that it's cheap – £34.59 after rebate from crucial.com/uk (rebate via quidco.com). Will upgrading RAM improve games performance in BootCamp? I'm running Windows 7. I know the graphics card is using RAM also. I also read you should always use matched pairs for speed. Will 2 x 2GB run faster than 1 x 4GB? 1 x 4GB is cheaper than 2 x 2Gb and will leave one RAM slot free. What exactly does matched pair mean? Two chips exactly the same, manufactured at the same time, or just 2 chips of the same RAM capacity? Lots of questions I know.