Got my system last night, so i didnt have much time to play then.
Loaded up TF2 tonight via Steam just to try out the 580m. Was disappointed, as TF2 didn't tax the card like I thought it would...the gameplay was fun, though. I picked it for the quick download...should've loaded BF3 instead... Will do that tomorrow night, and maybe look for a miniDisplayPort-to-miniDispayPort cable, so I can use my iMac as a second display.
Nah I didn't. I've never been a fan of the 3D world. Also, I heard you could lose some performance on the M17x. How have you gone with it?
Actually I have not noticed anything to the naked eye. I have not done any FPS checks. I guess I am only interested in being able to play the game, and I can do that in 3D with everything ultra.