The CPU Smart Fan Function

Under normal circumstances, the CPU in your desktop PC generates modest amounts of heat; a smart fan on top of the CPU runs just fast enough to keep it cool. At this speed, you barely hear the fan. When your computer performs intensive tasks such as playing high-definition video, the CPU heats up and the fan runs faster. The smart fan function adjusts the fan’s speed, running it faster and slower to meet the CPU’s varying demands for cooling.