Now, before you decided to comment on Ken's i7-8086K article, consider he is not the only one who has encountered issues with Intel's Anniversary silicon.  The Tech Report offers succinct advice in their review as well "the i7-8086K isn't worth the $75 upcharge over the i7-8700K at stock speeds."  They manually overclocked the chip and found the same 5.1GHz limit, as the processors are thermally identical regardless of the handpicked artisan silicon inside the i7-8086K.  The 5GHz stock speed advertised does not seem to be available right out of the box but instead requires a bit of work.

On the other hand, if you like the idea of an Anniversary model CPU and would enjoy manually overclocking, the extra $75 might mean very little to you.

"Intel's Core i7-8086K is the company's first CPU with a 5-GHz Turbo speed out of the box. We dig deep to see whether this chip has the cachet to live up to its limited-edition billing."

Here are some more Processor articles from around the web:

Processors