I recently got my daughter a Toshiba with 8gb ram, 750gb hdd and an A6 6310 apu. It games decently for what it is. She really only plays L4D/2 TF2, Garry's Mod, and stuff like that on medium settings. It was about $549 at office max but I got it on sale for $449 plus a $50 MiR. Something with an AMD APU is probably the only option new for gaming in that price range, you could look for some used/refurbs too.