A heatsink is a device designed to passively remove heat from a heat source. Heatsinks are typically attached to CPUs and have a fan installed on top for efficient cooling. Some low-power systems can be passively cooled using only a heatsink, eliminating the noise of the fan. Basic heatsinks are typically simple blocks of metal with fins cut into them to increase heat dispersion; more advanced varieties may use heat pipes or vapor chambers.

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