A heat sink is a device used to dissipate heat away from electronic components, like computer processors or LED lights. It usually consists of a metal, such as aluminum or copper, with a large surface area to absorb and release heat efficiently. By keeping these components cool, heat sinks help prevent overheating, which can lead to reduced performance or even damage. Heat sinks work by conducting heat away from the source and spreading it over a larger area. This process allows air to flow around the heat sink, carrying heat away. Many devices, including gaming consoles and smartphones, rely on heat sinks to maintain optimal operating temperatures.