My school is issuing my class Dell Latitude e5400 laptops to take home and use the entire year. They are the basic but with windows 7 instead of vista or xp. I won't be gAming very much on it but I would like go run some basic games, possibly up to WoW. My question is will a 2 gb ram upgrade from 2 to 4 gb be a noticble difference? Not only in gaming but also just general use. It's only about $26 so fairly cheap. Thanks for the input!