Intel's new Core i7-8700K has barely been out for 24 hours and it has already been thrown under LN2 cooling and cranked all the way up to 7.405GHz... a huge overclock from its maximum Turbo clocks of 4.7GHz.
HWBOT user Kovan Yang broke der8auer's record on the 8700K of 7.3GHz, with Yang's use of the 73x multiplier and 101.44MHz bus speed hitting the magic 7.405GHz mark. Yang hasn't said how much voltage was used, which would be something very important to know. We do know that Yang used the 6C/12T processor @ 7.405GHz on MSI's Z370 Godlike Gaming motherboard, though.
Most people should reach 5GHz with AIO or good air cooling on the Core i7-8700K, and with anything more serious, the sky is the limit for Coffee Lane... especially when it comes to LN2.