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VDDIO voltage incorrect for Ryzen 7000 series on Asus mobo


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My ASUS B650E-E Gaming WiFi shows a "CPU VDDIO / MC Voltage" of 1.424V in BIOS > Monitoring section.
In AIDA64, a single "VDDIO" voltage value of 0.712V is shown under Computer > Sensor - Voltage values.

The VDDIO value reported by AIDA64 is exactly half of the VDDIO value in BIOS, which I don't think to be a coincidence (but I could be very wrong though).

So my question is: what exactly is "VDDIO" voltage supposed to represent in AIDA64?


BTW I was actually searching for a way to display memory and memory controller voltage values in AIDA64. This seems to be my best bet though.
Attached both BIOS & AIDA64 pics for reference.

EDIT 1: Just confirmed my alleged assumption on this 'VDDIO - halved voltage' issue by disabling EXPO in BIOS: "CPU VDDIO / MC Voltage", which gives 1.100V in BIOS, but which results in a "VDDIO" voltage output of just ~0.560V in AIDA64.

EDIT 2: It seems that "VDD Misc" voltage is also being misreported in AIDA64. It shows 0.552-0.560V in AIDA64, but is reported as 1.100V in BIOS (same value for EXPO ON or OFF btw).

241012151324.png

Screenshot 2024-10-12 152014.png

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  • 2 weeks later...

As a workaround, I decided to add two Correction Items for VDDIO and VDD Misc by using a 2:1 ratio on both.

This shows perfect results (in my book):
2024-10-25.png.8305050fe079bc8b956114096003324a.png

Notes:
- Purely cosmetic: Renamed (default) "VDDIO" to "VDDIO / MC" to be in-line with (ASUS) BIOS voltage monitor tab. 
- VDD Misc is fluctuating between 1.104~1.120V, which corresponds with (ASUS) BIOS readings for VDD Misc.
- EDIT: Also lowered SoC Voltage from 1.22 to 1.20 in between screenshots btw.

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  • 4 weeks later...
  • FatBoyNL changed the title to VDDIO voltage incorrect for Ryzen 7000 series on Asus mobo

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