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12900K safe voltages?

techanalyst
Level 7
What are the safe voltage for the 12900k? Bios I set max 1.375 ok or is that going to kill the CPU in 3 months
2,238 Views
34 REPLIES 34

Silent_Scone
Super Moderator
Hello,

1.375v is fine.

Using Per Core 54/53/52 with a set adaptive of 1.37v here with LLC 4.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Silent Scone@ROG wrote:
Hello,

1.375v is fine.

Using Per Core 54/53/52 with a set adaptive of 1.37v here with LLC 4.


I see the Intel app doing its thing but pushing to 1.5 vid if I add too many 5.5 cores which might be too much (the test above stays in the 70s on xtu 2 bench but with more 5.5s it’s stable but it climbs to 84

Silent Scone@ROG wrote:
Hello,

1.375v is fine.

Using Per Core 54/53/52 with a set adaptive of 1.37v here with LLC 4.


The voltage to up to 5.5 seems to be a large jump from here, pretty much staying below 1.4 to achieve this, and temps with XTU 2 running only maxes out at 82-84

Silent Scone@ROG wrote:
Hello,

1.375v is fine.

Using Per Core 54/53/52 with a set adaptive of 1.37v here with LLC 4.


lol mind me asking where I set thatÂ*

I see in bio I can set adaptive but then it’s in offset mode Â*

Silent Scone@ROG wrote:
Hello,

1.375v is fine.

Using Per Core 54/53/52 with a set adaptive of 1.37v here with LLC 4.


I tried this, works well. But under Prime 95 load, the core voltage is spiking to close or even above 1.5v with these settings, and the temperature goes up to 90C. This is with a massive AIO. I know, Prime 95 is NOT representing a realistic scenario. But is it still safe to have possible peak voltages of 1.5v?

Chainbold wrote:
I tried this, works well. But under Prime 95 load, the core voltage is spiking to close or even above 1.5v with these settings, and the temperature goes up to 90C. This is with a massive AIO. I know, Prime 95 is NOT representing a realistic scenario. But is it still safe to have possible peak voltages of 1.5v?



Where are you reading the voltage from?

With Loadline 4 CR20 load puts the Apex around 1.325v (USB Osc)

Stop running Prime 😉


techanalyst wrote:
lol mind me asking where I set thatÂ*

I see in bio I can set adaptive but then it’s in offset mode Â*


Set adaptive then enter the voltage value into Additional Turbo Voltage.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Silent Scone@ROG wrote:
Where are you reading the voltage from?

With Loadline 4 CR20 load puts the Apex around 1.325v (USB Osc)

Stop running Prime 😉




Set adaptive then enter the voltage value into Additional Turbo Voltage.


1.375? Seems a high add on

techanalyst wrote:
1.375? Seems a high add on


This is not "add on" to the adaptive core voltage. It's a bit confusing though. It's "called additional Turbo voltage". It seems it sets a ceiling when running in Turbo mode.

techanalyst wrote:
1.375? Seems a high add on


Hello,

As already aluded to Additional Turbo Voltage value is the total applied voltage, adaptive as it always has uses the stock VID table for ratios up to the turbo multiplier
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090