The 6-core/12-thread Core i7-8700K has a base clockspeed of 3.7GHz, and max Turbo frequency of 4.7GHz, An Overclocker Kovan Yang has taken a Core i7-8700K processor and cranked it all the way up to 7.405GHz using a healthy dose of liquid nitrogen cooling and beating previous record 7.3GHz, achieved by der8auer.
Yang set the chip’s multiplier at 73x and bus speed at 101.44MHz, We’ve no idea how much Voltage he used. This was achieved in an MSI Z370 Godlike Gaming motherboard. It is confirmed Users can hit 4.8GHz – 5.1GHz easily on AIO and decent AIR cooler configuration.
Source: HWBOT