Intel X-Series CPU Breaks 7.5Ghz
This was done with the help of a Gigabyte X299-SOC Champion motherboard, as well as 16GB of Corsair Vengeance LPX RAM, and a Corsair AX 1500i power supply. That kind of boost requires a lot of cooling, so the i7-7740K was taken down to -250 Celsius with the help of liquid helium.
Voltage remained under 1.1 V (at 1.096 V, to be exact) with a bus speed of 100 Mhz, and, of course, a 75x multiplier.
X299 seems to be holding a lot of promise for overclockers in general, with the platforming allowing a stick of G.Skill memory to be overclocked to 5.5Ghz.