I'm in the same boat. I've got an Asus P5E-VM HDMI that I recently installed a Thermalright HR-05 northbridge cooler on. So far, I've had no luck finding ANY program that can monitor my NB temps. Anyone else care to make suggestions?
You can't, there are no sensors same with ram voltages. That's one of the differences between P5E and MF/RF. I have mine bios modded to RF too. I can tell you that at 400FSB is about 50'ish idle and 60'ish on a hot day since I use fan controller temp probes. Unless you are doing 430FSB+ OC don't worry about it.