Intel Core i9 9900K vs. AMD Ryzen 7 2700X Linux Gaming Benchmarks
The Metro Last Light Redux game that uses OpenGL on Linux and isn't one of the Feral-ported games saw about 10% higher frame-rates using the Intel Core i9 CPU over the AMD Ryzen 7.
Rise of the Tomb Raider performance at 1440p with low quality settings saw similar performance with the Radeon RX Vega 64 on the two CPUs tested.
When increasing to very high quality settings for this Vulkan-powered Linux game port released by Feral Interactive earlier in 2018, the performance remained similar between these competing CPUs.