why do we use a heat sink in the computer

A heat sink is an electronic that incorporates either a or a peltier device to keep a hot component such as a cool. There are two heat sink types:
active and passive. Active heat sinks utilize the and are usually a fan type or some other peltier cooling device. If you are looking to purchase an active heat sink, we recommend purchasing fans with ball-bearing motors that often last much longer than sleeve bearings. Sometimes these types of heat sinks are referred to as an HSF, which is short for heat sink and fan. Passive heat sinks are 100% reliable, as they have no mechanical components.

Passive heat sinks are made of an aluminum-finned radiator that dissipates heat through convection. For passive heat sinks to work to their full capacity, there should be a steady airflow moving across the fins. The above picture is an example of a heat sink that is both active and passive. Heatspreaders are another name for heat sinks and commonly used to describe the covers on computer memory that help dissipate the heat produced by the memory. What devices in a computer use a heat sink? Any component that generates an excessive amount of heat uses a heat sink to help keep the component and the computer cooler.

The components that generate the most heat is the processor ( ) and the in your computer. Other components that may have a heat sink include the, and the. It is also not uncommon to also find to help cool other and in the computer. , A computer processor works at a very fast pace, generating a lot of heat. If a processor is overheated and does not have a heat sink, the CPU can be damaged. The computer may be dysfunctional and not able to complete a POST (power on self-test).

If a POST fails, nothing will appear on the screen and the computer speakers may produce only a series of beeps. To prevent overheating, the heat sink dissipates heat from the processor. To transfer heat from the processor to the heat sink, there must be an adequate amount of surface area between the two. This is done by the use of a heat sink compound (also called thermal paste), which is lightly spread over the surface. However, too much thermal paste will insulate the CPU instead of cooling it. Fans are used to cool the air and push hot air away from the computer and move cool air across the heat sink.

Fans near the CPU speed up as the temperature rises, helping cool the processor and heat sink. Maintaining a cool system is critical. Temperatures should be kept between 90 and 110 degrees Fahrenheit, or 32 and 43 degrees Celsius. Overheating internal components can cause data loss, shortened computer lifespan, system crashes, lock-ups, random reboots and permanent damage. For safety precautions, most motherboards are programmed to shut down if the CPU temperature reaches 85 to 90 degrees Celsius.

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