Thermal Grease
Thermal paste, also known as thermal compound or thermal grease, is a substance used to improve the thermal conductivity between a heat-generating component, such as a central processing unit (CPU), and its heat sink. Its primary purpose is to fill in microscopic gaps and imperfections between the mating surfaces of the component and the heat sink, which helps to maximize the transfer of heat from the component to the heat sink by removing air pockets which can hinder the efficient transfer of heat.
Thermal paste typically consists of a combination of thermally conductive particles suspended in a silicone-based or metal-based compound. The thermally conductive particles, such as metal oxides, enhance the thermal conductivity of the paste, which is rated in W/m·K (watts per meter kelvin). To learn more take a look at our Thermal Interface Materials Guide
What are the benefits of using thermal grease?
- The application of thermal grease offers several benefits in computer systems and other electronic devices:
- Improved thermal conductivity: The primary benefit of thermal paste is the enhancement of thermal conductivity between a heat-generating component and a heat sink. By filling in gaps and imperfections, thermal paste creates a more effective transfer of heat from the component to the heat sink.
- Reduced temperature: Efficient thermal conductivity leads to lower temperatures for the heat-generating component. When the heat is effectively dissipated through the heat sink, the component can maintain optimal operating temperatures.
- Prevention of air pockets: Air pockets or gaps between the component and the heat sink hinder the transfer of heat. Thermal paste eliminates these air pockets by filling in the microscopic imperfections and creating a continuous thermal pathway.
- Even distribution of pressure: Thermal paste acts as a cushioning material between the component and the heat sink. It helps to ensure even distribution of pressure across the mating surfaces, avoiding uneven contact and potential damage.
- Easy installation and removal: Thermal paste is relatively easy to apply and remove. It usually comes in a syringe or small container, and a thin layer can be evenly spread on the component using a thermal paste applicator or other suitable tools.
Applications
- Computer CPUs
- Graphics Processing Units (GPUs)
- Chipsets
- Power Transistors
- LED Lighting
- Overclocking and Custom Cooling Solutions
RS offers a comprehensive range of Thermal Grease. Many of these products are part of our Better World range, helping you make more sustainable choices without compromising on performance. With Next Day Delivery available, you can get the components you need—fast.
