April 23, 2026 - 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.

February 6, 2024 - Heat sink compound is used to fill gaps between the CPU or other heat generating components and the mechanical heat sink. The mechanical heat sink is placed over the CPU. Heat is drawn from the CPU though the mechanical heat sinks to its fins, ...

June 27, 2024 - A heatsink is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium such as air or liquid. It is used in electronic devices to dissipate heat and prevent overheating.

January 21, 2025 - A heatsink is a component that absorbs and disperses heat generated by electronic devices to prevent overheating and protect their performance. Heatsinks are typically made of thermally conductive materials like aluminum or copper.

April 24, 2026 - In case the heatsink is the radiator, the fan is the engine, which makes the whole system truly effective. Active cooling is added to the equation in the form of a fan. Though a heatsink may radiate some heat into still air, normally, its ...

May 25, 2026 - A heatsink absorbs heat from your CPU and releases it into the air, working silently and without moving parts. A cooling fan creates airflow to push heat away, making it essential for high-performance computers.

Once the heat is spread out, the heat sink releases it into the surrounding air. Sometimes, a small fan is used with the heat sink to blow air over its fins. This helps to move the hot air away and bring cooler air in, making the cooling process even more effective.

September 11, 2024 - Keep your computer cool with a heatsink — essential for dissipating heat from high-power components like the CPU, ensuring optimal performance, stability, and hardware longevity.

All the elements mentioned on the previous fin heat sink type apply to this fan-fin type too with exception to the use of its fan. Heat sink and forced convection are integrated in one unit. With relation to the semi-active and the passive heat sinks it has a higher capability to produce higher heat dissipation.

August 29, 2023 - It’s then channelled to a radiator or heatsink, where a secondary thermal transfer takes place between the water and the surrounding air. In this way, the liquid is cooled before looping back around again, and so on. Whether powered by fans or pumps, active cooling heat sinks are widely used as a temperature control system in electronics, protecting and enhancing the performance of various chips, LEDs, ICs and other modules.

Answer (1 of 3): The heatsink is a thermal mass that absorbs heat from the CPU, usually it’s a chunk of metal with fins but it can also be liquid and a radiator in a liquid cooling loop. The CPU fan is what actually dissipates heat from the heatsink so that it can actually keep the CPU cool.

February 17, 2026 - A heat sink is a device used to transfer heat from a source to the surrounding environment. Learn more about it here.

September 9, 2025 - Convection – Once the heat reaches the fins of the heat sink, it needs to be carried away. This happens through the surrounding air (or liquid, in some cases). Natural convection occurs when warm air rises and cooler air takes its place, while forced convection happens when a fan or pump moves fluid across the fins, carrying heat away much faster.

April 23, 2026 - Natural convection occurs when there is no externally induced flow and heat transfer relies solely on the free buoyant flow of air surrounding the heat sink. Forced convection occurs when the flow of air is induced by mechanical means, usually a fan or blower.

February 23, 2024 - The heatsink absorbs the heat generated by the CPU during operation and transfers it away from the CPU to the surrounding air. In many cases, the CPU heatsink is equipped with a fan or integrated into a larger cooling solution with fans to enhance ...

May 28, 2023 - A glossary is a comprehensive list of terms and definitions, often found at the end of a book or on a website. This page explains what a glossary is and how it can be useful.

April 9, 2026 - Heat sinks work by absorbing and dissipating heat into the air, they’re good for components that generate a lot of heat like CPUs. Fans on the other hand actively push air around, which is helpful when airflow is limited.

The definition of PCM volume fraction is the ratio of the PCM volume to the available space in the heat sink, that is, Equation [1].