CPU Temperature Sensor Issues

Galaxy2007 · August 22, 2020

My CPU temp sensor is detecting temps that are much lower than room temperature (about 20 degrees feirinheight lower) and it is also causing the fan to run at high speeds. I'd like to fix this since the loud fan is obnoxious. The Cooler is OEM HP and made by cooler master. The HP part number is 711578-002, the CPU is an AMD A8 Pro 7600B, and the motherboard is stock. It hasn't done this until I swapped cases.

AndreiArgeanu · August 22, 2020

It's a pretty common thing in OEM's, I've seen this before in Dells Optiplex's. Usually there's something that's integrated in the case, whether it is the front IO, or somewhere else, there are sensor's for temperatures inside the case and what not, if you remove those I imagine the motherboard is going to assume worst case scenario and it's going to ramp the fans up.

Also are you sure it's the CPU temp sensor and not an external sensor?

jaslion · August 22, 2020

14 minutes ago, AndreiArgeanu said:

It's a pretty common thing in OEM's, I've seen this before in Dells Optiplex's. Usually there's something that's integrated in the case, whether it is the front IO, or somewhere else, there are sensor's for temperatures inside the case and what not, if you remove those I imagine the motherboard is going to assume worst case scenario and it's going to ramp the fans up.

Also are you sure it's the CPU temp sensor and not an external sensor?

It's a well known issue with any cpu based on the fx architectures really. They had some whacky temp reporting going on.

Galaxy2007 · August 22, 2020

16 hours ago, AndreiArgeanu said:

It's a pretty common thing in OEM's, I've seen this before in Dells Optiplex's. Usually there's something that's integrated in the case, whether it is the front IO, or somewhere else, there are sensor's for temperatures inside the case and what not, if you remove those I imagine the motherboard is going to assume worst case scenario and it's going to ramp the fans up.

Also are you sure it's the CPU temp sensor and not an external sensor?

I didn't have this issue in my last case, and I've moved it into 2 non original cases so far. As far as I know neither have external temp sensors, plus it is being reported as the CPU temp in open hardware monitor.