On OS X, things generally just work, and work quickly. 3D performance is good. I've never had graphics hardware that was not supported. Granted, OS X doesn't ha

On OS X, things generally just work, and work quickly. 3D performance is good. I've never had graphics hardware that was not supported. Granted, OS X doesn't have to deal with a lot of different hardware configurations like Linux does, but still. On Linux, things are flaky. Sometimes it works, sometimes it doesn't. Some things work, other things do not. Alt-Tab out of full screen games? Upgrading the NVIDIA and ATI graphics driver without dropping out of X? Not possible. 3D performance is extremely variable: depending on your driver and hardware, some 3D operations are hardware accelerated, others are not. On OS X everything that should be hardware accelerated, always is. Ditto on Windows. The Windows Display Driver Model allows upgrading the display driver without rebooting, and without even relogging in. It runs the display driver partially in user mode so that if it crashes it can be restarted. I don't know how far Linux is away from a similar feat.