They always have some cooling usually a fan.
Cpu heat sink.
Pastall 100 pcs 8 different sizes heatsink kit with conductive adhesive tape aluminum heat sink cooler and copper heatsink for raspberry pi a b b 2 3 4 by pastall 16 89 16.
A heat sink also commonly spelled heatsink is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium often air or a liquid coolant where it is dissipated away from the device thereby allowing regulation of the device s temperature.
Large heat sinks help any machine that generates heat as a byproduct such as a car or refrigerator.
When you use heavy applications such as video games and video editing software the cpu can produce excess heat which may cause your computer to freeze.
It is important that such machines stay as cool as possible.
Both a heat sink and a radiator require airflow and therefore both have fans built in.
All modern computers rely on some form of heat exchanger with higher end models using cpu heat sinks.
The components that generate the most heat in your computer are the cpu central processing unit video card if your computer has one and the power supply.
The heat sink has a thermal conductor that carries heat away from the cpu into fins that provide a large surface area for the heat to dissipate throughout the rest of the computer thus cooling both the heat sink and processor.
These important components are not just for computers.