I have a 5930k (paid $300 for it, the 5820k should perform similar for $300 at Microcenter), which is basically the previous generation 6-core i7. Seems to perform around the 6850K.
Built on 4.18, 16GB RAM.
High - 168 seconds
Production - 320 seconds.
So at least those i7 6 core benchmarks seem accurate, no idea about the Ryzen benchmarks.