NVIDIA 375 vs. RADV+RadeonSI Mesa 13.1-dev Vulkan Benchmarks For Ending 2016
At 1920 x 1080, only the lower-end cards see some differing in the results for Dota 2 with OpenGL. The NVIDIA Maxwell and Kepler cards remain much faster than the AMDGPU+RadeonSI results, even with the R9 Fury and RX 480.
With Vulkan at 1080p, the AMD hardware fell to last place with even a GTX 950 outperforming the RX 480 and R9 Fury. Yes, for now, the Dota 2 Vulkan results tend to be slower than OpenGL.
The CPU usage for the OpenGL results then the Vulkan numbers. Still, the Vulkan usage resulted in slightly lower CPU use.
At 4K is finally where the AMDGPU+RadeonSI combination is more competitive with the NVIDIA Linux stack. Here, the R9 Fury was performing around the speed of the GTX 970 while the RX 480 was running just ahead of a RX 480.
But when switching over to Vulkan, the RADV performance was less competitive with the RX 480 now coming up short of the GTX 680/960 while the R9 Fury was just faster than the GTX 960. Keep in mind this is the open-source RADV driver on the AMD side.