School starts in a week, and I am interested in making some upgrades to my laptop. There are several factors here: 1) I have 19 GB of free space, which is kind of worrying going into a new semester 2) I use Xcode a lot as I am going into computer science! 3) I also enjoy my games a lot (starcraft II!), and only have 2 GB of RAM My laptop has the stock 2GB of RAM and the 120-something 5400 RPM HDD. I would like to upgrade to 4GB an a 7200 RPM HDD by the end of this year, but would like to do one now before I go back to school. With this combination, I am trying to figure out of a HDD upgrade would make a big difference in speed and in gaming. I read that going from 5400 to 7200 will bring about an improvement in starting and loading programs, but what I don't quite understand is how it will improve games/programs after loading. I guess I need to figure out of SC2 accesses the HDD during the game, or if it loads most of it into memory! I guess I am in quite a pickle deciding between enjoyment and more space for more...practical reasons?