After installing a new video card in an older system I was trying to setup something to watch various system temperature sensors. Especially the video card, which has no fan. But when I started the machine and immediately ran one of these sensor programs -- before doing ANYTHING else -- I saw something very odd. The TMPIN0 sensor, which is usually the motherboard/northbridge sensor was showing 82 C! That's scary high. And it's just the MB chip, not the CPU. But as I watched it for a while, it slowly dropped. In a few minutes it was down to a mere 25 C, which is more typical. Admittedly, I've never used a monitor program right after booting like that before, so I don't know what is "normal". Could it be that the sensor was just inaccurate right after booting? Or does it often happen that the northbridge is called on to do so much at boot time that it heats up dramatically like that? Could it have anything to do with the new video card having been installed, while it was previous using the integrated video? (This is a nForce2 board, btw. I've heard they are infamous for running hot, but this one has always been quite cool, even while using the IGP. Until now.)
Edited by Alchemist, 19 January 2013 - 07:51 PM.