RadeonSI Gallium3D vs. Catalyst At 4K UHD On Linux

With the open-source Tesseract game, the R7 260X was running at 61% the speed of Catalyst when using the RadeonSI Gallium3D code. The R9 270X was also running at comparatively similar speeds against the binary driver. The Radeon R9 290 Hawaii graphics card meanwhile was continuing to have an awful showing on the open-source driver due to re-clocking or other features not working right for this graphics card when not using the Catalyst driver. Only with the Linux 3.17 kernel is the R9 290/290X even finally working with hardware acceleration on the open-source driver.

When running the Warsow game, the R7 260X and R9 270 were running very close to the speed of Catalyst with the newest RadeonSI Gallium3D code. The Radeon R9 290 performance continued to suck on RadeonSI, simply put.