Nvidia has finally mentioned it has included beta support for Maxwell in its most newest drivers. I've been trying to tell some people for a while that Maxwell support wasn't included in drivers until now and that our dear 9 series cards have been running on Nvidia's Unified Driver Architecture (UDA) which is forward compatible, especially for reference design graphics cards. Now Nvidia has confirmed it with their latest blog post as well as promising big performance gains henceforth. Enjoy, but bear in mind that at this stage the performance benefits are for mostly for Kepler GPUs. Maxwell should see Windows-like gains later. http://blogs.nvidia.com/blog/2015/08/31/mac-driver/ 'Our new driver for the Mac Pro offers up to 80 percent improved performance for Macs with Kepler GPUs. And, for the first time, our driver includes beta support for MacBook Pros and iMacs with Kepler GPUs, as well as beta support for those using Maxwell GPUs in older Mac Pro systems.' In related news, the current El Cap beta driver continues to work in Public Beta 6. Thanks to @flowrider for being first to test.