Question New Build Z390 i7-9700k OC can't reach 5.0Ghz?

Oct 6, 2019
Hello guys, I am brand new here and hopefully I could learn a lot from all the experts.

I just built my new gaming PC for about 3 weeks now, and I have decided to OC both CPU and GPU on the second week.

For my GPU, I am running a Nvidia RTX 2080 Super Advanced Edition from Asus. I managed to +100Mhz Core Clock and +1000Mhz Memory Clock. I got a 12,836 score for Graphic Test on 3DMark.

For my CPU, I decided to go with the i7-9700k. I followed some basic overclocking guides online and managed to push 4.8Ghz at 1.30v, with temps idle at low 40C and max load 80C. I am also running Corsair H150i Pro as well.

I have tried to reach for 5.0Ghz but I can't do so without trying to keep the voltage below 1.4v. I managed to have squeeze a stress test for about 15 mins at 1.42v then OCCT cuts off due to one of the cores reached 90C. Should I just stay at 4.8Ghz or does anyone know what i should do to reach 5.0Ghz? Thanks so much in advance.

Here's what I am running:

Case: Lian Li P011 Dynamic
CPU: i7-9700k
CPU cooler: Corsair H150i (exhaust)
MB: Asus Z390e
Ram: Corsair Vengeance 32gb at 3200mhz
GPU: Asus RTX 2080s Advanced Edition
Storage: 500gb m.2 and 1tb SSD
PSU: Corsair 750w
Extra Cooling: 6 additional fans (All intakes)