Hi all. Having a issue in World of Warcraft all of a sudden. Very laggy and choppy more so then usual. In the old areas like Tristfall Glades. I reinstalled WOW but would like to also be able to run a diagnostic on the 5670 and Ram. Still a bit of a apple newbie. Does anyone know of a in system diagnostic check? Or is there a program that can test functionality? Thanks in advance 21.5" core i3 3.ghz 1TB 5670 Amd at 512 4 gb is the computer in use.