Great answer, this helped me a lot to understand what each means. PCH does not mean Processor Core Heatsink, good to know. I am running custom Bios settings and far prefer a cool computer than a quiet room. On an 80f degree day at high processes my system average is a mere 105f. Still too hot for me, i seek 95f and will be mounting a 120mm fan almost directly above my cpu's fan feeding it a stream of air, as i did with my new video card, piggy backing a 80mm fan on its inlet directly above its fan, cuttings its operating temp by 20f. Leaving my last question, running IDU 3.2.6.068a my new GeForce 560 SE Temperature does not show up on this program, yet my 7 year old HD has no problem reporting its temp. Hope intel can add GeForce support, as many types of separate software reports its temp.... Also while your debugging, intel, view the IDU in winXPro high contrast black desktop.. All black would be nice in this mode..
Stay cool people, there is no hot temperature that is acceptable. I know this, my all Intel P4 is running 24/7 through its 11th year of being worked like a rented mule. Cool lives forever.