The "FAQ about nVidia" thread is a handy reference for all things nVidia on Mac Pro but I miss a similar thread for AMD cards. I thought AMD support was about as universal as nVidia but recently found out that a number of cards would need hacks or not even run at all (e.g. R9 270). With a possible shift towards OpenCL on the Mac platform, I think AMD cards deserve a central information repository. So, who is willing to start?