It runs slightly faster. If you were a person who buys all of your software, and you don't have any for a particular machine, XP really is a bargain. It comes with a CD burner, firewall, remote connection, and there's a legal patch that will let you play DVDs on WMP. To be honest, XP takes up as much memory as 2k, they're just being honest to you now about how much you need and it comes with a lot of software that is very handy and should you buy them separately, would sum to more than the cost of XP.