2001 . The GeForce3 came to the Mac first . It was used for gaming .
[doublepost=1457716815][/doublepost]
That might have been a relic of Steve Jobs' aborted attempt to present the Mac as good for gaming (along with that awesome Bungie game for Mac, Halo...)
Gaming was and is a lost cause for Apple to focus on. Even if Apple suddenly turned around and sold or supported high-end GPUs, worked on the driver situation, kept OpenGL up-to-date... those PC gamers with their rig-as-lightsaber philosophy were and never are going to switch to a Mac.
Gaming on Mac could certainly be *better* if someone at Apple knew or really cared about games (which has never been the case as far as I can tell, during Jobs' time or after) but realistically it's plateaued. As someone who lived through the dearth of gamings in the 90s and 2000s, we're still way better off now as opposed to then (we get reasonably priced ports a few months after the games release instead of years, tons of indie games come via SteamPlay, etc.)