Question i7 9700K 5Ghz stability help!

[Ringwraith34544]

I tried AIDA64

https://imgur.com/ffcicEu

View: https://i.imgur.com/ffcicEu.jpg
and my mhz was between 4500-5000 does that mean its not stable? but at Cinebench R15 core mhz was at 5000 Mhz stable

https://imgur.com/k001J9q

View: https://i.imgur.com/k001J9q.png
so does that mean my i7 9700k is stable? or should I increase the V

 

[Ringwraith34544]

alright my cinebench wasnt up to date so I installed r23 and tried multi core test and same thing happen on it as well