Power and temperature control on a 90nm Itanium/sup /spl reg//-family processor

This paper describes the embedded feedback and control system on a 90 nm Itanium/spl reg/-family processor, code-named Montecito, that maximizes performance while staying within a target power and temperature (PT) envelope. This system utilizes on-chip sensors and an embedded micro-controller to measure PT and modulate voltage and frequency to meet PT constraints.