Abstract: A method and system are described for thermal management using power density feedback. The system may include one or more regions of the system, where the system includes one or more dies; and a thermal relationship coefficient to describe a thermal relationship between the one or more regions. In some embodiments, the embodiments of the method may include measuring the activity of one or more regions, and using the thermal relationships to determine an activity configuration for the system or parts thereof. In some embodiments, the activity configuration may be applied to the one or more regions. Other embodiments may be described.