Slight pet peeve:
When people think a < 500 MHz difference in a part that's already operating at > 4 GHz has an appreciable performance boost. Most of the time these days it's less than 10%.
To put it in perspective when the i7-2600K came out, people could get it up to 4.8GHz, which from the stock max turbo boost of 3.8GHz. This is a >25% uplift.
5.0GHz from 4.7GHz (what I commonly see out of an i7-8700K)? 6%.