It has been reported that the new Kaby Lake 7700K CPU's can overclock to 5.0 on 1.35 volts
Without giving to much information my retail sample 7700K can run RealBench 2.44 at 5.0 at 1.35 volts easy, can validate @ 5.1 1.35 volts, locks up at 5.2
Not sure if I have a good chip or not but pretty excited to play with this new chip
Haven't delidded it yet like all my Skylake CPU's are and the temps it hit running RealBench @ 5.0 with a Corsair h115i I may not, mid 70"s on open bench table
Supposedly the IMC has been improved and runs memory at high speeds, I will be checking this out soon, this is on a an ASUS Z-170 board