HWiNFO showing 0.098v overvolt on some Legion laptops, despite undervolting - a bug?

[placeboing]

I am completely new to this sort of stuff, so I'm confused if I've actually discovered a bug on my first-ever attempt at working with undervolting...

First, I should probably mention that I have finally now discovered that HWMonitor properly displays the undervolt offset, as seen here:



Here is my original post:

This is a problem that I have seen repeatedly asked, but no true solutions have been given (all asked by Legion users, always automatically overvolted by 0.098 v):

https://forums.tomshardware.com/thr...res-reflects-the-undervolted-voltage.3851612/

https://www.reddit.com/r/LenovoLegion/comments/1c6lh34/need_help_with_undervolting

<-This guy says his problem just randomly fixed itself one day

https://www.reddit.com/r/LenovoLegion/comments/1eq5mxd/legion_7i_overvolted_by_default

https://www.reddit.com/r/overclocking/comments/1dlg53u/cpu_undervolting_issue

https://www.techpowerup.com/forums/threads/undervolting-legion-9-16irx8-i13980hx.318917/

I have my Legion 7i, i9 14900HX, I have changed the necessary BIOS settings, I have uninstalled Lenovo Vantage.
If I change the CPU Core Offset Voltage in Throttlestop, it shows up as properly working in the Throttlestop window.
However, in HWiNFO (of course, I restart it), it ALWAYS shows 0.098 for IA voltage offset. (however, undervolting the cache displays as working fine in HWiNFO)
What is going wrong here?
I have tried rebooting, making sure Throttlestop runs first, deleted my Throttlestop settings file.
Throttlestop shows that it is working:


But HWiNFO says 0.098:


All necessary settings such as Undervolt Protection are properly set in BIOS.

Uninstalled Vantage, and do not have Intel XTU.

mvboost is NOT enabled in throttlestop.

Thank you for any help.

 

[Martin]

Please attach the HWiNFO Debug File so I can verify the raw data.

 

[placeboing]

Here it is, thanks for checking this out

 

[Martin]

OK, I can see the problem now.
There are 2 methods how to apply a voltage offset:
1. Using a legacy "global" offset for all ratios, or
2. Using the V/F curve to specify individual voltage offsets for each ratio

On your system I can see that the "global" offset is indeed set to a negative voltage, but the V/F curve is also active and specifies a positive offset for ratio 58x.

This is confusing HWiNFO as it considers the V/F curve setting to have precedence. I'm not sure how the CPU behaves in this case, but I will update HWiNFO to reflect this situation: it will report the correct negative offset for global setting but maintain the positive one for V/F curve.