A microprocessor includes a programmable thermal sensor incorporated on an associated semiconductor die for generating a signal indicative of the temperature of the semiconductor die. The control signal is provided to a frequency synthesizer which controls the frequency of the CPU clock signal. The frequency...http://www.google.co.uk/patents/US5490059?utm_source=gb-gplus-sharePatent US5490059 - Heuristic clock speed optimizing mechanism and computer system employing the same
