I just got an i5-8600K with a Gigabyte z370XP SLI MB and I'm trying to overclock it. I've followed the steps here: https://overclocking.guide/gigabyte-z370-overclocking-coffee-lake/ just with a lower clock speed. The BIOS says that it is at 4.2ghz but once I log in it maxes at 3.6, CPU-Z says its 8-42 but stays at 36 under a load. I've never Overclocked before, so I'm not going for an insane number, just something a bit better.