AMD Linux Graphics: The Latest Open-Source RadeonSI Driver Moves On To Smacking Catalyst
Written by Michael Larabel in Display Drivers on 1 September 2015. Page 4 of 4. 73 Comments

The synthetic OpenGL tests in GpuTest also offer much hope for the direction of the open-source AMD Linux graphics driver.

These RadeonSI Gallium3D vs. Catalyst Linux results today are easily the most competitive we've seen the open-source driver ever, this is with the DRM-Next code for Linux 4.3 plus the Mesa 11.1-devel Git and LLVM 3.8 SVN back-end. The only card really not performant was the Radeon R9 285, but that's due to the AMDGPU kernel driver not having power management / re-clocking support. The AMDGPU power management support will hopefully come for Linux 4.4, which will be great news for the R9 285 and R9 Fury. The Radeon HD 7950 and R7 370 cards performed particularly well today relative to the Catalyst driver on Ubuntu 15.04. The Radeon R9 290 certainly delivered the best open-source driver performance for this high-end Hawaii graphics card, but it had the largest difference in performance between the open-source driver and Catalyst.

These results also largely jive with what's been independently reported recently by Phoronix readers about RadeonSI doing much better these days with the latest Git code.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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