i7 7700k @ 3.8 Low clock speed

Partyparrot

Prominent
Apr 19, 2017
24
0
510
Just installed i7 7700k on ASUS Z270 Prime-K and the CPU clock I get is 3.8GHz instead of 4.20GHZ. My current BIOS version is 0316 and I know there is available BIOS update BUT it doesnt mention that fixes this issue. Had i5 7500k on this mobo before, was working fine. Is it CPU issue or MoBo issue ?
 

Partyparrot

Prominent
Apr 19, 2017
24
0
510


Hey, thanks for replying after so many days. It was the BIOS after all, seems that I was messing up some stuff when I still had my 7500 on. After installation of new CPU I restored it to defaults and its OK now. 7700k is a beast :)