[SOLVED] i9 12900K all cores running at 100c with volt of 1.45

[mcurse]

Hello,

I have been using my core i9 12900k for one week. I noticed during heavy workload all CPU cores go to 100c with a volt of 1.45 highest.
There are a few points I want to add:

1. It instantly goes 95-100c on the first 8 cores, then 80-90c in the rest of 8 cores. It takes only 2 seconds -- https://prnt.sc/O4tfuBCzjum2
2. When I turn off the cinebench 23 it instantly comes to 40-45c on all cores. It takes only 2 seconds -- https://prnt.sc/tFItTw2UzqPT
3. During 3 game sessions, the package temperature never goes over 60c.
4. I saw motherboard red light (CPU) appear during heavy workload.

I have already measured the following steps to fix this. But no positive outcomes

1. Re-install thermal paste
2. Opened up both side panels of the casing
3. Make sure the screws are tight enough
4. Reset bios
5. Used XMP I for the DDR5 6000Mhz ram

Can you please what could be the possible reason for this instant high temperature? What steps I can take?

 

[TerryLaze]

Motherboard bios are almost always set up with way too high settings, look for PL1 PL2 or long and short duration boost in your bios and if they are higher then what intel suggests then dial it down to suggested values.

You should also be able to adjust Vcore in the bios, 1.45 is very high.

You can test this by having ixtu while running cinebench, it will show you the clock speeds and you will be able to adjust them in real time, when you have achieved an acceptable outcome you can copy the settings in the bios if you don't want to have ixtu.

 

[mcurse]

Motherboard bios are almost always set up with way too high settings, look for PL1 PL2 or long and short duration boost in your bios and if they are higher then what intel suggests then dial it down to suggested values.

You should also be able to adjust Vcore in the bios, 1.45 is very high.

You can test this by having ixtu while running cinebench, it will show you the clock speeds and you will be able to adjust them in real time, when you have achieved an acceptable outcome you can copy the settings in the bios if you don't want to have ixtu.

Thank you for the suggestion. I attached my current ixtu settings. Can you please advise what changes needed here?

Intel Extreme Tuning Utility - Screenshots

1. https://prnt.sc/YEpRuYFYEOeC
2. https://prnt.sc/ZY04gIE-7gDR
3. https://prnt.sc/kLvcBu6493L5

 

[TerryLaze]

Thank you for the suggestion. I attached my current ixtu settings. Can you please advise what changes needed here?

Intel Extreme Tuning Utility - Screenshots

1. https://prnt.sc/YEpRuYFYEOeC
2. https://prnt.sc/ZY04gIE-7gDR
3. https://prnt.sc/kLvcBu6493L5

First screenshot
core voltage offset is how much additional V is used at 0 offset it would use intel default.
short power max should be 241 (you can lower that even more if you want better temps)
and boost power max should be 125 (you could increase that (above 125) if you want better performance)
For the cores you have all 8 cores running at 5.1 you should turn that lower if you want better temps, decrease by 100Mhz, check temps rinse repeat until satisfied.
Same for the efficiency cores.