Guy English made some great points about potential for the new Mac Pro:
"The CPU is a front end to a couple of very capable massively parallel processors at the end of a relatively fast bus. One of those GPUs isn’t even hooked up to do graphics. I think that’s a serious tell. If you leverage your massively parallel GPU to run a computation that runs even one second and in that time you can’t update your screen, that’s a problem. Have one GPU dedicated to rendering and a second available for serious computation and you’ve got an architecture that’ll feel incredible to work with."