9900K Voltages

[DanielNS84]

Quick question...

I've been stable with all cores @ 5Ghz for a while now with 1.22 Volts showing (set to auto, that's the reading in Windows from HWInfo/CPU-Z/Etc...) and I started pushing it higher...It's stable on auto at 5.1Ghz in all but Prime95 but it seems to be sticking to 1.22 Volts even for that. I manually adjusted the voltage using adaptive+offset and it's rock solid at 5.1Ghz at 1.3 Volts (total, with offset at 1.25 + .5)  but I have to push it dangerously close to 1.4 Volts to get much higher. It's stable at 1.36 Volts or so for 5.2Ghz and 1.38 Volts for 5.3 Ghz all cores (Didn't dare try Prime95+AVX at 5.3Ghz as it hits 85+ degrees in Cinebench but it's stable in everything else). My question is, are these voltages safe? Cinebench temps hit about 68 degrees at 5Ghz, 75 degrees at 5.1Ghz, 81 degrees at 5.2Ghz, and around 87 degrees at 5.3Ghz so should I really run at these numbers daily? Maybe use a heavy AVX offset? Thoughts?

[Cereal5]

Yeah, 1.36v is fine for everyday. Once you start getting much above that, like 1.4 and up is when most people recommend you turn it down a notch

[DanielNS84]

6 minutes ago, Cereal5 said:

Yeah, 1.36v is fine for everyday. Once you start getting much above that, like 1.4 and up is when most people recommend you turn it down a notch

1.38v for 5.3Ghz too much? I could probably trim down a bit if I tried as well, I stepped up the voltage by the same amount each 100Mhz and didn't really try to adjust it.

[Cereal5]

You can turn the LLC up a bit if it’s not adjusted at all, that should help. But yeah, if you can fine tune it a bit that would be best. 1.38v is fine, but I personally wouldn’t go that high.

[Kalm_Traveler]

19 minutes ago, DanielNS84 said:

Quick question...

I've been stable with all cores @ 5Ghz for a while now with 1.22 Volts showing (set to auto, that's the reading in Windows from HWInfo/CPU-Z/Etc...) and I started pushing it higher...It's stable on auto at 5.1Ghz in all but Prime95 but it seems to be sticking to 1.22 Volts even for that. I manually adjusted the voltage using adaptive+offset and it's rock solid at 5.1Ghz at 1.3 Volts (total, with offset at 1.25 + .5)  but I have to push it dangerously close to 1.4 Volts to get much higher. It's stable at 1.36 Volts or so for 5.2Ghz and 1.38 Volts for 5.3 Ghz all cores (Didn't dare try Prime95+AVX at 5.3Ghz as it hits 85+ degrees in Cinebench but it's stable in everything else). My question is, are these voltages safe? Cinebench temps hit about 68 degrees at 5Ghz, 75 degrees at 5.1Ghz, 81 degrees at 5.2Ghz, and around 87 degrees at 5.3Ghz so should I really run at these numbers daily? Maybe use a heavy AVX offset? Thoughts?

yeah under 1.4v should be fine - especially if you let it downclock when not under load. Mine was passing Timespy at 5.3 gHz 1,375v a bunch the other night when I got it set up but 2 days later it was angry so I dropped it back to 5.2 ghz and 1.33v, probably going to just leave it there for stability. The heat problem with these chips are that they get hot quickly and it's not as fast to pull the heat out into your cooling solution. 

Maybe once Der8auer has the die-sanding sorted out I'll try that to see if we can improve cooling efficiency but for now... still a rockin CPU

[xg32]

25 minutes ago, DanielNS84 said:

.

anything under 1.4 is fine, just keep an eye on summer temps, 1.3 5.1 is non-avx is a good chip, i doubt 1.38 5.3 is stable though if you need 1.36 for 5.2, which is what i'd recommend out of all the combos you listed. Wonder what the VRM temps are while pulling 220w though lol.

[DanielNS84]

10 minutes ago, xg32 said:

anything under 1.4 is fine, just keep an eye on summer temps, 1.3 5.1 is non-avx is a good chip, i doubt 1.38 5.3 is stable though if you need 1.36 for 5.2, which is what i'd recommend out of all the combos you listed. Wonder what the VRM temps are while pulling 220w though lol.

VRM Temps seem fine, this motherboard seems to be a drastic improvement over the MSI MEG z390 ACE I replaced in every way...it's a workstation board and it seems to be tuned better for stability. I'm gonna see if I can squeeze 5.3Ghz in under 1.35v but if I can't then I'll just take the time to make software profiles. If I boot at 5.1Ghz and have a 5.2 and 5.3 profile to swap to for stuff I'll be happy. I've still got a ton of work to put into this board/CPU to get it right I just wanted to make sure I wasn't gonna nuke it. Thanks!

 

Edit: Not sure if there's a VRM sensor on this board but even at 5.2 Ghz they're cool enough to touch, plus there is an automatic VRM temp shutdown option in BIOS that I left on.

Edited December 5, 2018 by DanielNS84