I know this tends to be a controversial topic, but I'm compelled to spout about how wonderful my 2011 MBP (see sig) is as a dual platform gaming machine. Granted most of the gaming I do is on Windows7 but I'm carrying one computer that does it all- MacOS, Windows, and it does a damn good job with gaming as a medium grade gaming box. I play(ed) Wow, World of Tanks, Final Fantasy, Everquest Next-Landmark, and tons of Steam games without issues. I love this computer and it's still going strong. I anticipate I'll be looking for another Mac laptop in the future to take its place. I assume this would have to be the top of the line MBP for the dedicated graphics? $2600... Tip: if you delve into windows be sure to cough up $40 for Tuneup Utilities. You won't regret it.