Mac's can be gaming machines with dual boot. I had a mac pro with a gtx series card in it with dual boot windows 7 / osx. All the components are just about the same these days. With windows they can run any game and bench the same as their pc counterparts with equal specs. But for strictly gaming i run a hand built PC these days. Lots cheaper. I only used the mac because i got the tower with a cooked power supply at a garage sale for $100