Altho page 48 is awesome,
The internal thermal sensor used for CurTmp (F3xA4[31:21]), hardware thermal control (HTC), software thermal control (STC), and the sideband temperature sensor interface (SB-TSI) may report inconsistent values.
Suggested Workaround
None. Systems should be designed with conventional thermal control and throttling methods or utilize PROCHOT_L functionality based on temperature measurements from an analog thermal diode (THERMDA/THERMDC).
Systems should not rely on the HTC features, STC features or use SB-TSI.