Now having looked at the Windows 8.1 vs. Ubuntu Linux performance, carried out an initial GPU comparison, and compared several Intel/AMD processors, our latest performance investigation with AMD's A10-7850K "Kaveri" APU is looking at the Radeon R7 Graphics performance on Ubuntu Linux when using the open-source "RadeonSI" Gallium3D driver and then using the closed-source AMD Catalyst driver.

All the published AMD Kaveri Linux benchmarks up to this point have been with the AMD Catalyst Linux graphics driver. As outlined in my original AMD Kaveri Linux article, the open-source Linux GPU driver support for this GCN-based APU isn't quite baked at this point.