Overclocking the Core i7-8700K (Coffee Lake) to 5.0GHz on all 6 Cores
 

"we'll show you how to overclock the Intel Core i7-8700K (Cofee Lake) from the default speed of 3.7GHz to a whopping 5.0GHz on all 6 cores, by simply changing 3 BIOS options on the Asus ROG Maximus X Hero motherboard.

After some tweaking in the BIOS, I was able to overclock the Core i7-8700K from a default of 3.7GHz to a whopping 5.0Ghz. That's an extra 1.3GHz overclock … excellent!"

http://www.funkykit.com/articles/ove...n-all-6-cores/