Occasional High Core Voltage...

[Daharen]

So I'm trying to get the best of both worlds out of my PC right now, all the power I want when I need it, but also reducing net power consumption. To that end I re-enabled all of the adaptive voltage settings for my CPU, set my core voltage to normal, and after some tweaking settled on a core voltage offset of -0.095. 

I'm running an 8700k at 5.2 Ghz, with an AVX offset of 1, and 'generally speaking' my average Ghz on the system is 3.5 and my average voltage sits right around 1.1 v. When doing stress testing, including prime 95, the average voltage rises to 1.25 on average, with maxes 'USUALLY' not exceeding 1.36v. 

My concern is in spite of the fact that even during stress testing, and during most use cases the voltage never goes very high at all, I left the monitor on in the background, and it appears 'occasionally' I get 'max' voltage readings of 1.425 v... I don't know what I'm doing when it happens, I don't know why the CPU is pulling that much voltage, but I know it's not it's not gaming, benchmarks, or stress tests since it occurs during regular use excluding all those conditions, and in even the worse stress tests it never seems to go that high. 

Is there any chance that this will damage my CPU significantly over time? Or are the warnings about high voltage generally more about high 'consistent' voltage? I figured since I keep the temps on the CPU running around 23c during normal use, as low as 17c idle, and no more than 55c under stress test, that I should be good as far as temperatures are concerned, and the 'average' lower voltage I know is better for the chip, but I don't know if those two things offset the cost of occasional very high voltages even if they're extremely brief. 

[Vegetable]

As long as it doesnt stay at that voltage for any extended duration, like you said, then it wont hurt it. Thats especially true since your temps are wonderful. To give some credit to that statement, my 4790k at 4.7ghz is set to 1.35v in the bios, but during stress tests its more like 1.365v. If I let a torture test run for a few minutes it will spike up to a max of 1.41v, but never for more than a split second, which is the DANGER ZONE for these old haswell chips. It's been on these settings for almost 2 years now, still does the exact same as the day I got it.

[Daharen]

2 minutes ago, Vegetable said:

As long as it doesnt stay at that voltage for any extended duration, like you said, then it wont hurt it. Thats especially true since your temps are wonderful. To give some credit to that statement, my 4790k at 4.7ghz is set to 1.35v in the bios, but during stress tests its more like 1.365v. If I let a torture test run for a few minutes it will spike up to a max of 1.41v, but never for more than a split second, which is the DANGER ZONE for these old haswell chips. It's been on these settings for almost 2 years now, still does the exact same as the day I got it.

Awesome, thanks for the reply, all I needed to know. Pretty much got my system tweaked and tuned in now. So just waiting on the CNC direct die cooling block, and then I should be all set, barring any other crazy ideas I have for projects. 

[Mister Woof]

I set my 8700k to fixed 1.355v and medium LLC 

 

Under full load it will dip to around 1.33 and sometimes during idle when nothing is going on it will spike up to 1.408 - 1.416 for less than a second. Average voltage is almost exactly 1.36.

 

Think it's just quirky motherboards.

 

I've been at this voltage since December 2017. Works same.