[SOLVED] Prime95 Not Maxing CPU

[Wislan]

Hello,

I am new to overclocking and I am trying to overclock my i7-8700k CPU (cooled with a Noctua NH-D15). I have the core clock speed set to 4.9GhZ and the Vcore at 1.29V (after dropping back from 5.0GhZ and 1.30V which caused a BSOD). When I run Prime95 small FFTs test (set to run 12 threads) all but one of the cores are maxed out. According to Core Temp, all cores are at 100% load and around 90 degrees C except for core number 3 which sits at 50%-60% load, with a similar temperature (interestingly core number 1 has a consistently lower temperature than the others, at around 80C-85C). Shouldn't they all be under 100% load?
Secondly: do the temperatures seem reasonable, or a little high (idle temps are around 35C)?

Thanks.

 

[RobCrezz]

I wouldnt use prime tbh, try OCCT.

 

[Wislan]

I wouldnt use prime tbh, try OCCT.

Running OCCT large data set (only for a few minutes atm in fairness) loads everything to 100% and 75C-85C, which seems alright to me? It might be worth trying for 5GhZ...

Edit: after a few more minutes core 3 crept up to 90C but the rest are still 75-85.

 

[RobCrezz]

Up to you, but my 8700k needed loads more voltage to go to 5.0, and made a lot more heat, so i stuck with 4.9.

One day I might delid and use liquid metal to get 5.0 without it getting super hot.

If its hitting 90'c after a few mins, I would stick with 4.9 and see how low voltage you can and still be stable.