"The i5-7600K targets high end gamers, it sits just behind the flagship i7-7700K in Intel’s Kaby Lake lineup. The 7600K will likely be the most popular gaming CPU of 2017"
As far as I know there is no such thing as an i7-7600k. First, I would make sure of the CPU you have on hand.
CPU Overclocking Guide: How (and Why) to Tweak Your Processor
https://www.tomshardware.com/reviews/cpu-overclocking-guide,4593.html
Remember, that CPUs have different top speeds based on how many cores are active. The all core speed is always lower than the single core speed by default.