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DDR5 behavior

Level 9


I monitor my system with Hwinfo.
Now I noticed that there is very strange behavior, especially with the DDR5 voltages and temperatures.
In particular, the VIN voltage, the total power and the temperature behave very strangely at times.
The VIN voltage, for example, is usually between 5,040 and 5,110 volts.
However, sometimes it jumps up to 8,400 volts.
The overall performance also doubles at times.
The monitoring of the temperature is also extremely strange; it occasionally drops from an average of 28 degrees Celsius to 16 degrees.
To me this all looks very much like reading errors in the software, but I would be interested to know whether people here in the forum have ever observed similar behavior.
Thank you in advance.


i9 13900k @ stock
ROG Strix Z790 Gaming-F Wifi
G.Skill DDR5 Trident Z 6400 64GB
4TB Samsung Nvme SSD 980 Pro




Customer Service Agent

Hello, @Vatergascoigne 

May I inquire about the current BIOS version you are using?
Have you observed similar results when clearing the CMOS and using the default BIOS settings? 
Apart from the described outcomes, have you encountered any other abnormalities in usage, such as BSOD?
Since Hwinfo is third-party software, we recommend confirming the information within the BIOS or using various software tools to cross-verify the results. 

Thank you.

Due to the ongoing regional holidays, my responses may be slightly delayed.
Thank you in advance for your patience.‌‌‌‌ 🙂

Hello Jiaszzz_ROG,

I am currently using the 1501.
I have not experienced any BSOD so far.
After deleting the CMOS, the problem reappeared sporadically.
I have to add that this phenomenon cannot be reproduced directly.
Sometimes the problem does not occur once during a session lasting several hours, then again immediately after starting.



Hi @Vatergascoigne,

This normally occurs if something else is polling the memory. If you open up instances of CPUZ for example, you should see some erroneous readings [within HWINFO]

Check to see what else is running, however, it's always advisable not to run multiple polling tools at the same time.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090