X870E-E T_Sensor buggy and inconsistent

[tappiah]

I've only seen one other post about this here and the thread was closed T-sensor on Crosshair x870E Hero - Republic of Gamers Forum - 1085681. I'm not sure what is causing this, but the reading on this sensor will sometimes be completely off (reading 24c when it should be 40c), or even like 5 degrees off. The only solution is sleeping the system and waking it from sleep. I am using the latest bios version 1401. 

[tappiah]

I decided to just stop using it and use the temp sensor on one of my fan controllers instead. 

[Silent_Scone]

Where are you pulling the reading from?

I use T-sensor on the X870E Hero for inline temp to control fans. Always reads correctly. Normally any anomoloies are down to the sensor itself.

[tappiah]

I'm using HWInfo64 to read the sensor. Aida64 is also reporting the same wrong values when this issue occurs. I'm using it to monitor the temperature of the 12vhpwr cable connected to my 5090. It will sometimes suddenly read 4~15c less than the correct value and like I said before, sleeping and waking the system will fix it until it decides to happen again. 

So as an example, at load, the temp of what I'm monitoring is somewhere around 45~50c. When this issue occurs, the sensor temp drops to 35~40c and stays there until a sleep/wake cycle. When the system resumes from sleep the temp goes back up to what the the temp should've been. 

As a test, I had two sensors in roughly the same location and confirmed that the temp was completely off on the t_sensor reading. After a wake/sleep cycle, the temps on both sensors were the same, so I do think it's either an issue with the motherboard or maybe the BIOS version? In the other thread I linked, that guy said it started happening with 1203.

[Silent_Scone]

Try another probe, if you can. It may be a polling issue, don't run multiple polling tools (e.g HWiNFO and AIDA64 at the same time. I've not had any erroneous readings on the Hero. What thermistor is it?

[tappiah]

Amazon.com: XSPC Wire Sensor 10K (5060175584175) Replacement Temperature Sensor 12 Month Warranty : ...

I have a couple of these, plus a few more that came with my corsair fan controller. I did try multiple probes and they all exhibit the same problem. The only polling tools I normally have running are hwinfo and I guess fancontrol would also count too, right? But fancontrol doesn't even detect the t_sensor.

Also...I had mostly the same setup on my z690 strix board and did not have this problem. 

[Silent_Scone]

The issue may be with the SIO, but I've not seen any issues as I've said already. So it's hard to narrow down to any exact cause.

[tappiah]

I wanna say it's fixed after updating my bios to 1504...it hasn't happened again yet. 

[Silent_Scone]

Thanks for confirming