Phoronix published a review on the 14-Way NVIDIA Kepler/Maxwell/Pascal OpenGL vs. Vulkan With Mad Max
A quote from the article:
Yesterday game porter firm Feral Interactive released a public beta of Mad Max that features a Vulkan renderer in place of its OpenGL API for graphics rendering on Linux. In addition to Radeon Vulkan numbers, I posted some NVIDIA Mad Max Linux benchmarks with both renderers. Those results were exciting on the few Pascal cards tested so I have now extended that comparison to feature a line-up of 14 NVIDIA GeForce graphics cards from Kepler, Maxwell, and Pascal families while looking at this game's OpenGL vs. Vulkan performance.14-Way NVIDIA Kepler/Maxwell/Pascal OpenGL vs. Vulkan With Mad Max @ Phoronix