System Management Unit: Difference between revisions

Revision as of 23:29, 29 June 2006

Revision as of 16:16, 30 June 2006

Line 1:

{{wikify-date|June 2006}}

{{categorize}}

The System Management Unit ( SMU ) is an advanced internal subsystem introduced in late 2004 with the iMac G5 and Power Mac G5 series computers. Its manages the functions previously governed by the PMU ( Power Management Unit ) as well as additional cooling management functions. <p>

The SMU manages thermal and power conditions to optimize the power and airflow while keeping audible noise to a minimum. Power consumption and temperature are monitored by the operating system, which communicates the neccessary adjustments back to the SMU. The SMU makes the changes, slowing down or speeding up fans as neccessary.