Hey,
Sapphire just released a full version of the Polaris 11 chip. So, it has all 16 CU's, 1024 SP's, like the AMD Pro WX4100 and like the AMD Radeon Pro 460 in the new 2016 MBP, albeit, higher clocked.
I wonder if this will OOB in a Mac Pro.
Here's the link to the article...