Cannot find Core Voltage Offset in my BIOS

[Moises2018]

System specs:

Motherboard: ROG Strix Z790-A Gaming

BIOS: 1501

CPU: i7 14700K

I’ve seen videos on how beneficial it is to Undervolt your CPU.  Looks like it’s best to first make the Core Voltage Offset changes and test with the Intel Extreme Tuning Utility and then once system is stable go into the BIOSs and set your Core Voltage Offset.

However, I cannot seem to find the Core Voltage Offset in my BIOS.  Can someone tell me how to find and enable the feature so that I can add or remove a Core Voltage Offset?

The below screenshots shows where I think I found it, named Actual VRM Core Voltage. 

Is that the Core Voltage Offset field?  If it is, I don’t see an option to manipulate the core voltage offset.

PIC 1PIC 2- When I click on AutoPIC 3 - When I clicked on Offset Mode

[Silent_Scone]

Hi @Moises2018 ,

There are a number of ways to under volt on Z790.

You can set a global offset as you are trying to do by setting Global SVID Voltage to Adaptive and applying a negative offset voltage. This voltage is applied to the entire VID stack.

Another alternative is to use the Advanced voltage offset function located under the V/F Curve Menu which allows you to undervolt or overvolt key voltage points on the factory fused Voltage / Frequency curve.

You can read more on Skatterbench's page which explains the process clearly. Navigate to the Intel Advanced Voltage Offset section. 

 

[wildginger]

You didn't actually answer the question @Silent_Scone  . This user already knows you can set a voltage offset, the screenshots show they are already there in the bios. What we are looking for is instructions on how to actually offset the voltage. You can see from the screenshots that you can set the mode to 'adaptive' but there is no way to actually change the value of the voltage from within the bios. If there is a way, it's not obvious, and we need someone to explain how to do it. 

[Silent_Scone]

Where in the screenshots has Global SVID Voltage been set to Adaptive?

[Moises2018]

Thank you for your assistance @ Silent_Scone, appreciate the time you took in responding.  However, as wildginger posted, that’s exactly the problem I am running into.  I think I found the location where to adjust the CPU core voltage, however, I cannot seem to be able to adjust/change voltage value. 

If you look in the below screenshot, I have set Global Core SVID Voltage to Adaptive Mode (have also tried Manual), but I cannot find where to set a negative offset value for the CPU core voltage.

Can anyone please shed some light?

[Silent_Scone]

See Offset Mode sign is set to negative. 

Use the - Offset Voltage field to set a negative offset voltage.

However, I'd highly recommend reading the link in my initial post regarding V/F Curve tuning.

[Moises2018]

Two questions for you @Silent_Scone :

Question 1: Do you see (PIC 1) the word AUTO in the -Offset Voltage field? 

If I click in in the field nothing happens, the AUTO remains.  Am I supposed to just type the -offset voltage value into the field, right over the word Auto?

PIC 1

Question 2: Regarding the V/F Curve tuning you recommended.  From the below screenshots (PIC 2 and PIC 3), is this where I would adjust the –offset voltage for the V/F curve?

PIC 2 and PIC 3

[Silent_Scone]

You need to enter the negative value you wish to use. E.g. 0.020, the value will be applied to the entire VID table.

If you wish to use V/F tuning instead, read the linked article to ascertain which points to adjust and the limitations of manipulating VID with adaptive.