System Management Mode


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System Management Mode

(hardware)
(SMM) A reduced power consumption state provided by some Intel microprocessors. When a CPU enters SMM it saves its current state in a special area of static RAM called SMRAM (System Management RAM) and then runs a program, also stored in SMRAM, the SMM handler.

SMM is implemented in all Intel "SL" suffixed CPUs. In June 1993, Intel announced it was discontinuing its SL range and instead making all its current processors SL enhanced.

See also Auto Idle.

SMM

(1) See social media marketing.

(2) (System Management Mode) An energy conservation mode built into x86 CPUs. Introduced with Intel's SL Enhanced 486 in 1993, SMM initiates a sleep mode during inactive periods that turns off peripherals or the entire system. It retains the computer's status in a protected area of memory called the "System Management RAM" (SMRAM).
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