From what I am seeing in the comments, which BTW is my best way to get a feel for something,shows mixed results with 15.7. Power consumption however seems to go down for everyone and that is always a good thing. I think being Win 10 and DX 12 capable was a major thing they wanted to achieve in addition to performance gains. My system is showing good performance increases with the R9 270X I have, but I am waiting for Fury testing and a legit copy of WIN 10)......