Lacero said:Dual 2.7 with only 512MB RAM? HAHA. I had a good laugh. Ok serious now. If you can afford a Dual 2.7, definitely put at least 4GB in there. You'll notice a massive speed up in GarageBand and other apps.
As for WoW, no idea, but I think a nice GE6800 might speed it up.
I agree a powerful computer like that with that price tag needs at least 2gb ram to complement. 4gb is i very sweet spot.