i9 12900k temps

Gwyn · 20 Feb 2022 at 22:10

Hi guys

just installed this cpu under a Noctua 15s and during stress test in Cinebench I’m hitting 100c on 7 cores and 85c on the rest. Does this sound normal?

Idle temps are between 26 - 31c

cheers
Gwyn

Gwyn · 20 Feb 2022 at 22:58

It’s running stock and with air hsf. Not done anything else to the chip in terms of undervolting.

Gwyn · 20 Feb 2022 at 23:08

I’m on an Asus strix B660. Just wanted to check that it’s online with what’s expected?

Gwyn · 20 Feb 2022 at 23:09

Ayahuasca said:
Check the vcore using hwinfo64 while running Cinebench. Chances are you’ll be able to undervolt it substantially while maintaining the same or even greater performance.

Thanks for that. I will have a look.

Gwyn · 20 Feb 2022 at 23:20

Wow hwinfo has a lot of info. Where do I look for vcore info?

Gwyn · 20 Feb 2022 at 23:26

Found it thanks. Vcore max is 1.376 on Cinebench.

Gwyn · 20 Feb 2022 at 23:27

CPU package power is 265w

Gwyn · 20 Feb 2022 at 23:56

Ayahuasca said:
My 12700k was similar with voltages left on auto. You could comfortably knock 0.1v off that for stocks clocks, likely even 0.15v unless it’s a really poor bin.

This is very new to me. This is what I did in the bios
CPU core/cache volt - offset mode
Offset mode sign - minus
CPU core voltage offset - 0.05000
I’m now getting 1.314v
And a couple of degrees cooler. Does this look right and can I reduce it further?

Gwyn · 21 Feb 2022 at 00:16

Ayahuasca said:
The offset route isn’t the best option. I would suggest using a fixed vcore until you find how low it can go. Knock 0.05 off at a time, testing for stability and/or performance loss. I’d suggest starting at 1.25v.

Once you find that, you can look at using the adaptive voltage setting to get a load voltage at or just above the minimum you found from testing.

Do I input that into the CPU Input Voltage?

Gwyn · 21 Feb 2022 at 00:32

My bios has Auto, Manual and Offset.
I take it i need manual and then CPU core voltage override?

Gwyn · 21 Feb 2022 at 00:34

Ayahuasca said:
Yeah, that’ll be it.

Awesome thanks. I will carry on playing in the morning. Thanks for all the help.

Gwyn · 22 Feb 2022 at 10:49

Just a quick update. I changed the vcore to 1.25 and the temps are staying under 70c but it’s impacted my cinebench score from around 26k to 12k. Do I just keep increasing the vcore until I get the right balance?

Gwyn · 22 Feb 2022 at 11:06

Ayahuasca said:
What's the vcore and packpage power showing as in hwinfo64 when running Cinebench at 1.25? It should not be doing that to your score.

Max vcore is 1.252
Max package power 147w

Gwyn · 22 Feb 2022 at 11:21

The only adjustment I’ve made in the bios are as follows:
CPU core/cache voltage - manual mode
CPU core voltage override - 1.25000

am I missing another setting adjustment?

Gwyn · 22 Feb 2022 at 15:57

xrob said:
you definitely need to manage the voltage manually, the boosting algorithm may be messed up when you only put in a manual voltage, i'd try setting the CPU overclock manually as well, start at 4.9 all core, 3.9 e core to start with and see what happens with temps and performance.

Thanks. I will try that

Gwyn · 22 Feb 2022 at 17:41

xrob said:
you definitely need to manage the voltage manually, the boosting algorithm may be messed up when you only put in a manual voltage, i'd try setting the CPU overclock manually as well, start at 4.9 all core, 3.9 e core to start with and see what happens with temps and performance.

Sorry for the stupid question but how do I set the cpu speeds?

Gwyn · 22 Feb 2022 at 17:46

Ayahuasca said:
It might be easier following a video for undervolting if you're new to this.

Here's an example on an ASUS motherboard, the settings you need to change should be the same or similar across the board though.

I tried that but I don’t have the adaptive setting only auto, Manuel and offset

Gwyn · 22 Feb 2022 at 17:48

Asus strix b660 f gaming

Gwyn · 22 Feb 2022 at 17:54

Ayahuasca said:
That's probably why then. I believe you need a z690 board to gain full control of the voltage.

You might have to revert to the offset mode and see how far you can reduce it without losing performance. I think you said a -0.05 offet worked fine?

I will try that and see how it work

Gwyn · 22 Feb 2022 at 18:23

Nickolp1974 said:
Yes you can manually set voltage on these boards. Set LLC in digi vrm to 4 or 6, set current capability to 140%. When running a benchmark have core temp and cpuz open so you can check if its downclocking. So if its set at 4900hz does it remain there throughout. while you are testing and trouble shooting disable C-states in the advanced cpu tab and when in windows go to control panel type power options and select the performance tab instead of balanced tis will run everything at full so worse case scenario. you can change back after. out of curiosity what clocks are you running and at what voltage and what was your power draw??

I just set the offset to 0.07 and it’s drawing 254w and vcore is 1.305. I will do the adjustment you suggested and see