Undervolting 12900K 12th Gen

[DontJumpSRK]

Hey all,

Need some help on undervolting/CPU cooling.

I just built my second gaming computer and this is my build...

intel 12900K
Noctua NH D15 fan (used both fans, and have 1 fan in rear as well, totaling 3)
3070 TI
Asus Prime Z690 P D4 Mobo
2 TB SSD NVME
850W gold psu

I primarily game on Warzone which is a VERY cpu intensive game.

I have NEVER undervolted before and was quite nervous and did it following this video:

(Skip to 1:52) i set the offset voltage to the 0.05000 and was wondering if i should go any lower?

Right now, if i run Warzone if i play just a few games its like 73C but it can creep up to the 80s.

Should i be concerned? or should i STFU and just grow a pair and everything should be fine?


I just spent a lot of money on this beast build and i just want to make sure it lasts

 

[Cowboystrekk]

Run cinebench and try lowering voltage more, if performance starts dropping you know CPU is throttling in multicore. On my 12400F I can UV to -0.015, if I go to -0.02v cinebench drops by 1-2%, - 0.025v it drps by 3-4%. I would consider changing the fancurve on D15, on my setup it runs at 20% up to 50C and 100% at above 65C. Below 50% is inaudible so I changed the curve to make it smoother and cooler during typical gamingloads where it sticks around 50-60C for me (loading scenes makes it jump to 65-73C).

 

[joemama]

Well it depends on your CPU, as long as there aren't any errors during a stress test, you can go as low as possible.
By the way, do you know about the CPU bending issue on intel's gen 12? That could be causing some higher temperatures of the CPU

 

[JustBenching]

Run cinebench and try lowering voltage more, if performance starts dropping you know CPU is throttling in multicore. On my 12400F I can UV to -0.015, if I go to -0.02v cinebench drops by 1-2%, - 0.025v it drps by 3-4%. I would consider changing the fancurve on D15, on my setup it runs at 20% up to 50C and 100% at above 65C. Below 50% is inaudible so I changed the curve to make it smoother and cooler during typical gamingloads where it sticks around 50-60C for me (loading scenes makes it jump to 65-73C).

That just applies on AMD. Intel do not throttle due to vcore.

Hey all,

Need some help on undervolting/CPU cooling.

I just built my second gaming computer and this is my build...

intel 12900K
Noctua NH D15 fan (used both fans, and have 1 fan in rear as well, totaling 3)
3070 TI
Asus Prime Z690 P D4 Mobo
2 TB SSD NVME
850W gold psu

I primarily game on Warzone which is a VERY cpu intensive game.

I have NEVER undervolted before and was quite nervous and did it following this video:

(Skip to 1:52) i set the offset voltage to the 0.05000 and was wondering if i should go any lower?

Right now, if i run Warzone if i play just a few games its like 73C but it can creep up to the 80s.

Should i be concerned? or should i STFU and just grow a pair and everything should be fine?


I just spent a lot of money on this beast build and i just want to make sure it lasts

If you are stable with 0.05, you can go lower. Im currently running -0.14

 

[Cowboystrekk]

That just applies on AMD. Intel do not throttle due to vcore.


If you are stable with 0.05, you can go lower. Im currently running -0.14

Read what I wrote, this is with my 12400F, thats an Intel i5. It behaves similar to my 5600X and uses clock stretching if vcore gets too low. Some MBs have other implementations and becomes unstable instead, on Asus B660 prime atleadt it clockstretches just like Ryzen 5k.

 

[JustBenching]

Read what I wrote, this is with my 12400F, thats an Intel i5. It behaves similar to my 5600X and uses clock stretching if vcore gets too low. Some MBs have other implementations and becomes unstable instead, on Asus B660 prime atleadt it clockstretches just like Ryzen 5k.

Ah, dunno, all the Intels ive ever tried either work - or bsod.

 

[DontJumpSRK]

That just applies on AMD. Intel do not throttle due to vcore.


If you are stable with 0.05, you can go lower. Im currently running -0.14

Okay, sweet.

In BIOS, do i apply -0.09 since i already did -0.05? Or do i each time have to apply what I am setting from the default?

Never tinkered with undervolting so i am clueless.

Most ive ever done with BIOS settings is literally just played with fans, switched usb settings, and selected different boot devices LOL


BIOS scares me and Im a noob.

Thanks

 

[JustBenching]

Okay, sweet.

In BIOS, do i apply -0.09 since i already did -0.05? Or do i each time have to apply what I am setting from the default?

Never tinkered with undervolting so i am clueless.

Most ive ever done with BIOS settings is literally just played with fans, switched usb settings, and selected different boot devices LOL


BIOS scares me and Im a noob.

Thanks

You can change change the value from 0.05 to 0.09.

 

[joemama]

Okay, sweet.

In BIOS, do i apply -0.09 since i already did -0.05? Or do i each time have to apply what I am setting from the default?

Never tinkered with undervolting so i am clueless.

Most ive ever done with BIOS settings is literally just played with fans, switched usb settings, and selected different boot devices LOL


BIOS scares me and Im a noob.

Thanks

There's always a set of clear mos pins on the mobo, if you fuck up the bios setting and can't boot, just remove the mobo battery and short the clear mos for a couple of seconds to reset the bios

 

[Ghostlu]

Run cinebench and try lowering voltage more, if performance starts dropping you know CPU is throttling in multicore. On my 12400F I can UV to -0.015, if I go to -0.02v cinebench drops by 1-2%, - 0.025v it drps by 3-4%. I would consider changing the fancurve on D15, on my setup it runs at 20% up to 50C and 100% at above 65C. Below 50% is inaudible so I changed the curve to make it smoother and cooler during typical gamingloads where it sticks around 50-60C for me (loading scenes makes it jump to 65-73C).

What motherboard do you have with the i5 12400F?

 

[GerKNG]

you undervolt until it gets unstable. (you can run HWInfo64 in the background since it logs WHEA Errors on the bottom of the list)
temperatures are more than okay. (even 90°C would be fine for basically ever.)
out of my own experience with alder lake you should get WHEA Errors and general instability at around -80 to -110mv. (if it's a good one maybe a bit lower)

 

[Ghostlu]

you undervolt until it gets unstable. (you can run HWInfo64 in the background since it logs WHEA Errors on the bottom of the list)
temperatures are more than okay. (even 90°C would be fine for basically ever.)
out of my own experience with alder lake you should get WHEA Errors and general instability at around -80 to -110mv. (if it's a good one maybe a bit lower)

How can you undervolt? I see BIOS options do not include ADAPTIVE + OFFSET, only AUTO or MANUAL

 

[GerKNG]

i replied to the OP. didn't realize that this is from summer last year.
some setups don't have that. (with B or H Boards and locked CPUs)

 

[Ghostlu]

i replied to the OP. didn't realize that this is from summer last year.
some setups don't have that. (with B or H Boards and locked CPUs)

So, in order to undervolt, you need a K-CPU and a Z-board? Or just one of the 2?

 

[Cowboystrekk]

What motherboard do you have with the i5 12400F?

Asus B660m K.

you undervolt until it gets unstable. (you can run HWInfo64 in the background since it logs WHEA Errors on the bottom of the list)
temperatures are more than okay. (even 90°C would be fine for basically ever.)
out of my own experience with alder lake you should get WHEA Errors and general instability at around -80 to -110mv. (if it's a good one maybe a bit lower)

It's imposdible yo disable UV protection on locked CPUs so you get major performancedrop when using -30mv or lower. Pnly -10mv works on my setup without perf drop.

 

[Ghostlu]

Asus B660m K.


It's imposdible yo disable UV protection on locked CPUs so you get major performancedrop when using -30mv or lower. Pnly -10mv works on my setup without perf drop.

So you have an Asus Prime B660M-K D4 + i5 12400F and you are able to undervolt? Can I ask you which BIOS option you are using to undervolt? Because here (Asus Prime H670-Plus D4 + i5 12600) there are only these options, no ADAPTIVE+OFFSET but only AUTO or MANUAL.

Spoiler: BIOS

 

[Cowboystrekk]

So you have an Asus Prime B660M-K D4 + i5 12400F and you are able to undervolt? Can I ask you which BIOS option you are using to undervolt? Because here (Asus Prime H670-Plus D4 + i5 12600) there are only these options, no ADAPTIVE+OFFSET but only AUTO or MANUAL.

Spoiler: BIOS

View attachment 282218

No, it does not work. I said it is impossible. You can set an UV, but if I set more than -10mv it starts to lower performance since UV protection kicks in and it cannot be disabled.

 

[agent_x007]

Have you tried :

I5-12600KF Undervolting won't work

You don't want to "max it", as that increases temps/power. Question is : Is 50mV enough for you ? If it is, stay here, if not you have to decrease multi on ALL cores by 1 (so from 49 to 48), and try again a -60mV, -70mV, etc. I'll be fine when playing games, but I just wanted to decrease the...

www.techpowerup.com

?