The SpeedStep Anomaly

摘要

Intel's SpeedStep technology was introduced in January 2000, when the mobile 600-MHz Pentium III processor appeared. The technology allows a processor to step its peak frequency and operating voltage down to conserve battery life in portable machines. In order for this to work properly, several components are required: a mobile Pentium III processor with SpeedStep technology, an ACPI (Advanced Configuration and Power Interface), a SpeedStep-enabled BIOS, a voltage regulator, and an operating system that supports SpeedStep; a SpeedStep driver; Intel's SpcedStep applet; and a SpeedStep-capable chip set.