All temperatures are acceptable except for "TMPIN2" which reached 81º C (177ºF). Please ask why.
All temperatures are acceptable except for "TMPIN2" which reached 81º C (177ºF). Please ask why.
Hello everyone. I was checking temperatures using HWMonitor by chance in one of my older systems tonight and saw this reading at 177ºF/81ºC. All the other readings look normal except for this one. I reviewed the full CPUID documentation but couldn’t locate it, nor did I find it in Everest. It seems like this might be a sensor chip on the MOBO—maybe it’s malfunctioning or the part is damaged. The temperature feels unusually high for my room during the cold New England winter, especially since the desktop is on the ground floor where the coldest air settles and other readings are around 140s or lower. Could you help me understand what this temperature is, why it’s so high, and how to fix it? Thank you.
The report was prepared after uncertainty about whether to reply directly or edit the original post. It was decided to use Everest to generate a concise document containing all necessary details instead of a lengthy manual entry, aiming for clarity without excessive length. The PC in question is a 15+ year old white generic case, recently reused for building this system. It includes one large fan and an upgraded "Dark Knight" heatsink+fan for the CPU, plus fans for the PSU and graphics card. The graphics card was replaced only about six months ago after failing previously, though it appeared fine visually. Currently running a GeForce 1650 Super with AMD Phenom Black Edition Quad Core 3.2 GHZ "Deneb" processor, 16GB RAM (four in each bay), and the rest of the specifications are detailed in an attached .txt file. The PC was left off overnight (~10 hours) in a cold room (~65ºF), with the AC cord unplugged, so ambient temperature remained around that level. Upon restarting, CPU core temperatures rose from 65ºF to 106ºF within 80-90 seconds, with no readings above that for storage drives, graphics card, or other components except TMPIN2, which showed a reading of 172ºF. The author was surprised by the rapid temperature increase and is seeking further clarification if needed.
Have you checked that sensor before? Or is this your first time? Not every sensor on the board gives accurate readings. I remember an old Asus motherboard that displayed negative temperatures, while the rest looked normal—just disregard it.
I haven't examined that sensor before, either in a physical or visual way; I'm not sure why it caught me off guard—it just slipped through my fingers. I built this PC, but honestly, I have no idea what the 'row' of three sensors stands for. The others are clear—I see them in programs like Everest or CPU-Z—but how does one figure out what these TMPIN0, TMPIN1, TMPIN2 sensors actually mean?
Thanks a lot for this information; it really helps ease my mind.
TMPIN0 corresponds to Motherboard, TMPIN1 to CPU, TMPIN2 to Northbridge. What are the TMPIN# values? My HWMonitor displays 0, 1, and 2, but these don’t match the CPU temperature I see. I’m using the Gigabyte MA790FXT UD5P motherboard. The Northbridge is an AMD chip labeled 770. The site suggests checking for dust buildup, which is something you can address. It seems newer boards integrate this chip directly into the CPU. I previously confused it with SB 710, but that’s the Southbridge. There are reports of issues with the sensor producing inconsistent data.
Thank you for your feedback. Here’s the revised version:
I’m not sure if it would be feasible to remove that heatsink over the Northbridge.
I also have an old Duratrax temp reader I used with my R/C Cars for checking and maintaining temperatures on aluminum-head ABC nitro engines. Many of these metal components appear to be made of aluminum, such as the heatsink on the Northbridge, so I was able to easily access it using point-and-click. Based on the readings from 10 trials, the average idle temperature came out to around 110ºF.
From what I understand, the difference between diode and heatsink temperatures is typically about 10º, which suggests the actual readings are likely within safe limits, though the sensor itself might be faulty.