
1) Central processing unit
Found on
https://www.crosswordclues.com/clue/thermal-head

The Thermal Head is a component of a metrological device created to aid in development of new CPUs and chipsets. The first Thermal Head was constructed in 1996 by James Kerner. It was initially designed to control a slot 1 Intel processor`s temperature while making computations in a test platform. A Thermal Head attached to a CPU may also increas....
Found on
http://en.wikipedia.org/wiki/Thermal_Head
No exact match found.