Tonga AMDGPU Performance On Ubuntu 16.04 Has 80~90%+ Performance Of Catalyst

Similar to the previous article's results, the Radeon R9 285 graphics card with RadeonSI Gallium3D and the AMDGPU kernel driver on Ubuntu 16.04 leads to noticeably better frame-rates than the Catalyst driver on Ubuntu 14.04 LTS. As mentioned in that article, fglrx/Catalyst can't be tested on Ubuntu 16.04 due to lacking the xorg-server / Linux kernel ABI compatibility.

With the DiRT Showdown test, the latest open-source driver code is running at 89% the speed of Catalyst.

For the silly OpenArena game, the Ubuntu 16.04 configuration puts it at 85% the speed of Catalyst while still being more than playable at around 300 FPS.

With Tesseract, the RadeonSI+AMDGPU driver stack struggled with the R9 285 pushing hard to get out 60 frames per second while Catalyst was at 108 frames per second.

With the Team Fortress 2 game, the AMDGPU+RadeonSI stack on Ubuntu 16.04 was at around 88% the speed of Catalyst.