The Tjunction is used by the thermal sensor to calibrate the reading. I don't think 85°C is a real temperature, but don't worry about it. *(see below)
Those idle temps are way too high. You should be idling in the low 40s.
Just for the record, make real-world load test: play the most demanding game you have for 30 mins or so (be sure to log temps with CoreTemp, set it to report once every minute). It shouldn't get as hot as with the Prime95 torture test.
*My guess is that the thermal sensor is a thermistor, and the Tjunction is just some circuit providing a fixed resistance that corresponds to a 85°C reading... so the actual core temp is calibrated by using this.
Those idle temps are way too high. You should be idling in the low 40s.
Just for the record, make real-world load test: play the most demanding game you have for 30 mins or so (be sure to log temps with CoreTemp, set it to report once every minute). It shouldn't get as hot as with the Prime95 torture test.
*My guess is that the thermal sensor is a thermistor, and the Tjunction is just some circuit providing a fixed resistance that corresponds to a 85°C reading... so the actual core temp is calibrated by using this.