Computer Hardware Terms, Glossary and Dictionary

Heat sink is a metal base or plate onto which one or more components are mounted to absorb, carry away, or radiate the heat generated by the component(s). Heat sinks are generally made of an aluminum alloy and often have fins. All computers require a heat sink. Some also require a fan. A heat sink without a fan is called a passive heat sink; a heat sink with a fan is called an active heat sink.

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heat sink