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

Kelt · 20 Feb 2022 at 22:53

Gwyn said:
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

Given your idle temps, and you're using an air cooler, and the 12900K is a hot running chip...I'd say yes, but I'm guessing.

Is it overclocked?

Have you undervolted?

Most things I've read/watched, recommend using an AIO or custom w/c with your chip.

I'm running a 12700K with a 360 AIO (albeit on balanced mode), at 5.1/4.0 with 1.22v, and the three hottest cores still hit 80C.

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.

MagicBoy · 20 Feb 2022 at 23:04

Z series board and a 12900K will happily blow through all TDP power limits. CPU is likely pulling 190W+. That's gonna give even a Noctua 15 something to sweat over...

Ayahuasca · 20 Feb 2022 at 23:08

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.

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.

MagicBoy · 20 Feb 2022 at 23:10

HWinfo64 will also tell you what wattage the CPU is pulling...

Gwyn · 20 Feb 2022 at 23:20

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

Kelt · 20 Feb 2022 at 23:22

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

Look for "vcore", mine is under the motherboard name, usually with the PSU and other mobo sensors.

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

wookiee87 · 20 Feb 2022 at 23:37

Gwyn said:
CPU package power is 265w

wow then those first temps around the 100 degree mark are to be expected on a air cooler, look at a 360mm aio if you want to keep performance but lower temps, you could try undervolting the cpu a bit, but as i run amd i cant advise what volateg to use, but i'm sure fellow intel owners will chip in and help if you decide to undervolt

Ayahuasca · 20 Feb 2022 at 23:38

Gwyn said:
Found it thanks. Vcore max is 1.376 on Cinebench.

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.

MagicBoy · 20 Feb 2022 at 23:45

Gwyn said:
CPU package power is 265w

humbug · 20 Feb 2022 at 23:49

They use a lot of power so they will get very hot.

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?

Ayahuasca · 21 Feb 2022 at 00:09

Gwyn said:
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?

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.

Kelt · 21 Feb 2022 at 00:14

Gwyn said:
Found it thanks. Vcore max is 1.376 on Cinebench.

Gwyn said:
CPU package power is 265w

No wonder it's running hot!

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?