[Erazor0]

Hi,

Please can someone help me undervolt my cpu on an Asus motherboard? Where I need to go in the bios and what options I need to change etc

Goal is to achieve a lower load temp.

Spec:

Intel Core i7 12700K
ASUS TUF GAMING Z690-PLUS WIFI D4
16GB (2x8GB) Corsair DDR4 Vengeance LPX 3600 CL14

The bios looks very confusing. I can’t seem to find the option to simply set a cpu voltage offset value.

The only setting I have set atm is XMP II for the RAM.

Current Temps

Motherboard reports Max CPU temp as 81C but CPU reports Package as 87C. Temps are all over the place.

I am using HWMonitor.


Thanks!

 

[Glottis]

First step in trying to get better temps should be setting stock Intel config in BIOS. Most motherboards out of the box run at high power limits than Intel defaults.

 

[Erazor0]

What are the stock Intel config I need to set?
I just left everything on the default settings apart from setting XMP II.

Is there a guide I can follow or you can share?

 

[Erazor0]

First step in trying to get better temps should be setting stock Intel config in BIOS. Most motherboards out of the box run at high power limits than Intel defaults.

What are the stock Intel config I need to set?
I just left everything on the default settings apart from setting XMP II.

Is there a guide I can follow or you can share?

 

[MrFox]

On the same BIOS menu as the XMP option you should find an option for Core Voltage. Default is probably "Auto" and you can change it to Adaptive. That will open new menu options beneath it. Choose a minus (-) sign for negative offset. In the space below that, enter a value. This is in millivolts, so a -50mV offset would be entered as 0.050. Press F10 to save and exit. Go slow. If you go too far with the negative offset your system will become unbootable and BIOS Flashback might be the only way to correct it. Start at 0.050 and if that works and passes stress tests without BSOD or freezes, bump it to 0.060. Test, then try 0.075, etc.

 

[Erazor0]

On the same BIOS menu as the XMP option you should find an option for Core Voltage. Default is probably "Auto" and you can change it to Adaptive. That will open new menu options beneath it. Choose a minus (-) sign for negative offset. In the space below that, enter a value. This is in millivolts, so a -50mV offset would be entered as 0.050. Press F10 to save and exit. Go slow. If you go too far with the negative offset your system will become unbootable and BIOS Flashback might be the only way to correct it. Start at 0.050 and if that works and passes stress tests without BSOD or freezes, bump it to 0.060. Test, then try 0.075, etc.

Amazing, thanks for the instructions. Assuming I got the right setting? I done a quick bench and already getting 10c lower temps!!!

 

[storm-chaser]

@Kana-Maru
I know you have some experience undervolting the 12900K, perhaps you can help this guy out?

 

[bscool]

What are the stock Intel config I need to set?
I just left everything on the default settings apart from setting XMP II.

Is there a guide I can follow or you can share?

On Asus z690 if you want to run Intel specs set MCE Multicore Enhancement to DISABLED. Auto will default to MCE enabled and no power limits.

 

[rluker5]

Amazing, thanks for the instructions. Assuming I got the right setting? I done a quick bench and already getting 10c lower temps!!!

View attachment 2539889

I like to use offset and also set the vfpoints to be safe.

Spoiler

If you oc the E-cores they will need more volts at about 4.0ghz than the P-cores will ask for. Since they are running on the same volts I decrease the negative offset around there if my cpu is unstable when the E-cores are going fast and the P-cores aren't.

An alternative method is to change SVID behavior to best case scenario and raise LLC to where it is stable. If you can get it stable. My cpu likes LLC 6 or 7 when I'm using best case scenario, but yours may be better or worse. I really don't know how good mine is, can run 5.1 all core but seems to take a lot of volts.

Spoiler

But really the best way to control temps is to limit power. If you limit power your chip will throttle back frequency running things like P95 or Cinebench and won't throttle anything if your cpu isn't using more than your watt limit. Like in games. If you mostly care about gaming performance and don't want to render via cpu or fold all day you could set up your cpu for that. Try running your cpu as hard as you can in any game you want with the watts displayed in MSI AB and set your limit a little over that. Here's a quick example:

Spoiler

I've found 125W to be more than enough for any game I checked and little enough that my Scythe Mugen easily keeps it cool.
If I want to have a higher cinebench score I just load a bios preset I saved that has higher max speeds and as much power as my cooler can handle.
You don't have to have one bios preset be a jack of all trades and master of none.

 

[ahmedmo1]

I did the following to undervolt:
-set LLC to the lowest setting
-set SVID behaviour to the lowest setting that was stable after setting LLC low (for me that was typical)
-adaptive offset- i could go as low as -0.025V

My VCore is now ~1.07-1.08 under load.

Now under load on realbench it consumes 130W and 145W in Cinebench. It consumes way less than that while gaming.

 

[Erazor0]

Thanks everyone for your help.

I've set the following and getting much better temps now and fully stable.

MCE: Disabled
VCore: -0.050
V/F Point Offset: - 0.025

Running 10 C cooler on average

 

[postem]

On the same BIOS menu as the XMP option you should find an option for Core Voltage. Default is probably "Auto" and you can change it to Adaptive. That will open new menu options beneath it. Choose a minus (-) sign for negative offset. In the space below that, enter a value. This is in millivolts, so a -50mV offset would be entered as 0.050. Press F10 to save and exit. Go slow. If you go too far with the negative offset your system will become unbootable and BIOS Flashback might be the only way to correct it. Start at 0.050 and if that works and passes stress tests without BSOD or freezes, bump it to 0.060. Test, then try 0.075, etc.

I was questioning myself about it when I changed vcore to static. You could try playing with the svid behaviour option it seen Asus out of box set the auto option to be worse case scenario, you could choose best case or typical it will change the vid values for lower. On svid auto option I was getting 1.36v on 4.8ghz. testing with fixed vcore I saw the club requesting up to 0.1v less.

Consider that simply applying an offset could cause issues on the lowest loads as vid requests 0.6-0.8v and a big negative offset could trip the cpu

 

[postem]

Is MCE still the same as before? I set MCE on Asus tif and it's keeping only 4.7ghz on all core load

 

[MrFox]

I was questioning myself about it when I changed vcore to static. You could try playing with the svid behaviour option it seen Asus out of box set the auto option to be worse case scenario, you could choose best case or typical it will change the vid values for lower. On svid auto option I was getting 1.36v on 4.8ghz. testing with fixed vcore I saw the club requesting up to 0.1v less.

Consider that simply applying an offset could cause issues on the lowest loads as vid requests 0.6-0.8v and a big negative offset could trip the cpu

I personally don't use adaptive voltage, but many people find it easier for some reason. Maybe because it requires less precision and is more forgiving. I set static voltage on pretty much everything.

 

[Fragility]

Thanks everyone for your help.

I've set the following and getting much better temps now and fully stable.

MCE: Disabled
VCore: -0.050
V/F Point Offset: - 0.025

Running 10 C cooler on average

Sorry for reviving a month old thread, how come you opted to go for -0.025 on your V/F points as opposed to -0.050 like you did with your vcore as I'm experiencing somewhat of the same issues myself at the moment and just want to make sure I'm not missing something rather obvious.

 

[Erazor0]

Sorry for reviving a month old thread, how come you opted to go for -0.025 on your V/F points as opposed to -0.050 like you did with your vcore as I'm experiencing somewhat of the same issues myself at the moment and just want to make sure I'm not missing something rather obvious.

initially it was -0.050 but the system was unstable thus just changing the V/F points -0.025 resulted in a stable system so left the vcore on -0.050

 

[Technodox]

Yeah, just set manual core voltage to about -0.025v whatever it is at on Auto.

 

[Jabai]

What frequencies are you running guys with all that undervolt?

 

[Fragility]

What frequencies are you running guys with all that undervolt?

Personally, I didn't really notice too much of a difference myself, despite following lots of different examples. I was still getting around 1.3 - 1.35v while gaming and the temps didn't really drop for me per se, I didn't get around to trying v/f points at -0.025 I may try this later but I went straight into "overclocking" whilst using a much lower voltage. With references from this page :[Official] Intel Core i9-12900K / i7-12700K P-core binning

First I tried a manual voltage of 1.225v and it worked fine, I was passing 10 minutes of cinebench with fantastic temperatures with a LLC of 4, but I didn't want to use something so low, it just didn't sit well with me, so I bumped it up to 1.235v and this was fine for me, but after doing a 6 hour gaming stint on Lost Ark, when I closed the game, my system hung, like I could hear people on Discord and stuff, I just couldn't move my mouse or anything else? so I bumped it up to 1.250v and this seemed to resolve all of my issues, I didn't really notice any adverse improvement/degradation though.

I'm back on stock at the moment but I'm going to do some more testing a little later on and I'm probably going to go back to: LLC 4, negative offset and a slightly less V/F offset and see how I fair. I don't want to do anything that will cause a performance loss and I think a -0.050v offset may be the sweet spot all things considered.

 

[Gagazo]

I was having the same problem as you with the same config, getting 100º+ degress on AIDA64, Cinebench, CPU-Z, etc.
I just setted the XMP on the BIOS and nothing more.
Today I found the SVID Behavior and changed to Typical and disabled the MCE as I saw here.

On cinebench R23 I'm getting 95ºC+, is it normal ? on iddle 40~45º.
I'm sure that my cpu/paste is installed correctly (I reinstalled twice)