Your sensors are stuck until 40ºC. IMO forget about idle calibration because they'll move only above 40ºC. It's upside down compared to classic core temperature readings. Higher values of distance to TJMax are better (that's mean that CPU temperature is low). Core Temperature = TJMax - DTS Data So TJMax is constant 100 (for your CPU) and higher DTS Data (that's distance to TJMax) mean lower core temperature.