Intel Core i9 9900KS Linux Performance Benchmarks
With the common GIMP open-source photo editing/creation software, the Core i9 9900KS was providing minor improvements over the 9900K.
Demo: Magnetic Reconnection - Renderer: SciVis
With Intel's OSPray ray-tracing benchmark, its lead expanded over the Ryzen 9 3900X for some scenes while in the scenarios that scaled out well the Ryzen 9 3900X was still leading.
In cases like Intel's Open Image Denoise that scales well, the Ryzen 9 3900X with its 12c/24t configuration easily wins compared to the 8c/16t i9-9900KS.