NVIDIA 387.34 vs. Linux 4.15 + Mesa 17.4-dev Radeon OpenGL/Vulkan Performance
Mad Max with OpenGL places the Radeon RX Vega series very competitively against the NVIDIA Pascal cards under Linux.
While Mad Max with Feral's Vulkan renderer still shows RADV has a ways to go for improving the open-source Vulkan performance on the red side.