Phoronix published a review on the AMD A10-7850K Kaveri: Windows 8.1 vs. Ubuntu Linux
A quote from the article:
Aside from sharing the Linux overview of AMD's A10-7850K "Kaveri" APU on Linux, for your viewing pleasure today I also have out some early OpenGL graphics benchmarks comparing the performance of the A10-7850K APU under Microsoft Windows 8.1 vs. Ubuntu Linux in its current 14.04 development form. These tests are a precursor to many more interesting AMD Kaveri benchmarks in the coming days.AMD A10-7850K Kaveri: Windows 8.1 vs. Ubuntu Linux @ Phoronix