[SOLVED] Insane temps with manual voltage

[scherioyt]

Hello guys, i own an i7 8700k and i'd like to overclock it but i'm new to CPU overclocking, everytime i put a manual voltage from the BIOS (asrock z370 extreme4) like 1.2V, my temps bump to 95 degrees on tests like cinebench. My cooler is the dark rock pro 4 and i have pretty cool temps with the automatic voltage. Thanks in advance

 

[Afro_ninja199]

What did you do to confirm stability of that overclock? I know they make improvements in refining the silicon over time, but that's a really low Vcore...

Coffee Lake	All Core SSE Frequency	All Core AVX2 Frequency	BIOS Vcore	% Capable
8700K	4.80GHz	4.60GHz	1.375V	100%
8700K	4.90GHz	4.70GHz	1.387V	Top 99%
8700K	5.00GHz	4.80GHz	1.400V	Top 83%
8700K	5.10GHz	4.90GHz	1.412V	Top 49%
8700K	5.20GHz	5.00GHz	1.425V	Top 17%
8700K	5.30GHz	5.10GHz	1.437V	Top 4%
8086K	5.00GHz	4.80GHz	1.400V	100%
8086K	5.10GHz	4.90GHz	1.412V	Top 94%
8086K	5.20GHz	5.00GHz	1.425V	Top 65%
8086K	5.30GHz	5.10GHz	1.437V	Top 15%

That's Silicon Lottery's binning statistics for the 8700K. Even the 8086K, which is just a cherry picked 8700K, doesn't have that low of a Vcore recorded for 5.0ghz.
That's why I have to put into question what some people are actually doing for stability testing.

cinebench and prime95

https://imgur.com/a/G8uF7f7

View: https://imgur.com/a/G8uF7f7

 

[Phaaze88]

cinebench and prime95

Prime 95 is too steady for that.
Which Cinebench, and did you do the 'infinite loop', or just click run back to back or something?

 

[Afro_ninja199]

Prime 95 is too steady for that.
Which Cinebench, and did you do the 'infinite loop', or just click run back to back or something?

https://imgur.com/a/y6sfgup

View: https://imgur.com/a/y6sfgup


cinebench 20 for 1 hour