systin = Motherboard Temperature
cputin = Case Temperature
auxtin = Seems to be an extra or auxiliary temp sensor input on the
winbond W83627DHG sensor chip that is probably not connected (most just ignore this temp)
I looked around for you and it appears that Hardware Sensors Monitor v.184.108.40.206 places a tray on your toolbar and among other things monitors NorthBridge temps. You can find it here;
A forum community dedicated to overclocking enthusiasts and testing the limits of computing. Come join the discussion about computing, builds, collections, displays, models, styles, scales, specifications, reviews, accessories, classifieds, and more!