Perhaps Intel Coffee Lake 6 cores at 5 GHz with a de-lid and liquid-metal thermal interface material.
Comparing Coffee Lake and Skylake-X single-thread performance, I think it is a wash: Coffee Lake might be able to achieve higher frequency (better manufacturing process), or Skylake-X's modified cache may offset the frequency disadvantage.
Comparing Coffee Lake and Skylake-X single-thread performance, I think it is a wash: Coffee Lake might be able to achieve higher frequency (better manufacturing process), or Skylake-X's modified cache may offset the frequency disadvantage.