Intel Core i7 8700K Linux Benchmarks
The Core i7 8700K jumps in at right around the speed of the Ryzen 7 1800X with the OpenSSL signing performance.
And clears the 1800X with the Xsbench OpenMP test.
Lastly are some extra benchmarks I didn't have the time to run across all of the tested CPUs, but just a sub-set due to the time constraints:
Intel's microarchitecture allows better performance over znver1 when it comes to FFmpeg video encoding.
With the Darktable RAW photography software, the Core i7 8700K was generally running between the Ryzen 7 1700 and 1800X.