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How AMDGPU With PowerPlay Compares To Other Radeon GPUs
Last weekend I ran benchmarks looking at the performance of the AMDGPU DRM driver with the new PowerPlay patches for providing proper power management support for Tonga and Fiji graphics cards. In today's article is a larger comparison when running this latest Radeon and AMDGPU DRM driver code to see how these newer AMD GPUs compare to existing, well-supported Radeon graphics cards.
The AMDGPU cards were still the Radeon R9 285 (Tonga) and Radeon R9 Fury (Fiji). The comparison targets were the Radeon R9 290 and Radeon R7 370 on the existing Radeon DRM driver where there has been power management support.
Tests were done from the PowerPlay-patched Linux 4.3 kernel with Mesa 11.1-devel from the Padoka PPA. DRI3 support was manually enabled for all of these tests.
All benchmarks were, of course, done via the Phoronix Test Suite. Let's get straight to the numbers.