It only seems to be just a few days ago that I was confessing my IT limitations near here but here I am suggesting advice! What about Speccy from Piriform for this information, and lots more about what's going on? Like so much of their other stuff, mostly better known, such as CCleaner, Recuva and Defraggler, it's neat, cheap - well, free, if you choose not to contribute - and seems to do what it says on the tin. What I do not know is whether or not its measurement of Motherboard Temperature is sufficient for your purpose....