The Performance-Per-Watt, Efficiency Of Intel/AMD/NVIDIA GPUs On Open-Source Drivers

For this OpenGL testing while running the concurrent monitoring processes, Xonotic was used since it ran on the range of tested Intel, Radeon, and Nouveau drivers and is able to deliver usable performance for the bulk of the GPUs under test.

Again, see the earlier article for all of the details and summary of the raw OpenGL performance for these graphics cards with the open-source drivers. The main item to point out is Nouveau's lack of proper re-clocking support. There's also a caveat on the AMD side with the Radeon R7 260X not re-clocking until fetching the updated firmware blob. The proprietary AMD and NVIDIA driver tests will come in the days ahead.