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Thermal Grease Vs. Thermal Paste: Which Is Better?
Home » News » Blog » Thermal Grease Vs. Thermal Paste: Which Is Better?

Thermal Grease Vs. Thermal Paste: Which Is Better?

In the heat dissipation system of electronic devices, the choice of thermal conductive materials is crucial. Thermal Grease and thermal paste are two common thermal conductive materials, each with its own characteristics and applicable scenarios.

 

1. Thermal Grease

1.1 Main Features

· Ingredients: Thermal Grease is mainly composed of silicone matrix and thermal conductive filler.

· Thermal conductivity: The thermal conductivity of silicone grease is generally good, which is suitable for the heat dissipation needs of most electronic devices.

· Easy to apply: It is usually in paste form and can be easily applied between the processor and the radiator.

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1.2 Advantages

· High thermal conductivity: Thermal conductivity can effectively transfer heat and reduce the operating temperature of electronic devices.

· Good filling property: Silicone grease can well fill the tiny gap between the processor and the radiator to ensure uniform heat conduction.

· Long-term stability: In long-term use, silicone grease has high stability and is not easy to dry or fail.

 

1.3 Limitations

· Easy to flow: Silicone grease has high fluidity and may flow at high temperatures, affecting the heat dissipation effect.

·Possible leakage: If the grease is not applied evenly or too much, it may leak onto other components, causing unnecessary trouble.

 

2. Thermal paste

2.1 Main features

·Ingredients: Thermal paste is usually composed of thermally conductive powder (such as aluminum oxide, boron nitride) and adhesive.

·Thermal conductivity: The thermal conductivity of thermal paste is usually better than that of thermal silicone grease, especially in high-power devices.

·Application method: Thermal paste is usually a dry solid or thick paste, which needs to be applied carefully during application.

 

2.2 Advantages

·Higher thermal conductivity efficiency: Thermal paste is usually more conductive than thermal silicone grease, suitable for high-performance computing and processors.

·Less fluidity: The lower fluidity of thermal paste reduces the risk of leakage under high temperature conditions.

·Strong pressure resistance: Thermal paste can still maintain good thermal conductivity under high pressure, suitable for applications that require high-pressure heat dissipation.

 

2.3 Limitations

·Difficult application: The application of thermal paste is more complicated, and it is necessary to ensure uniform application for the best effect.

· Longer drying time: Some thermal pastes take a long time to achieve full thermal conductivity, affecting immediate heat dissipation performance.

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3. How to choose

3.1 According to device requirements

· Ordinary electronic devices: For most electronic devices used in daily life, Thermal Grease is sufficient to meet their heat dissipation needs.

· High-performance devices: For high-power devices such as high-performance computers or graphics cards, it may be more appropriate to choose thermal paste because they can provide higher thermal conductivity efficiency and stability.

 

3.2 Consider application difficulty

· Easy application: If you need to complete the application of heat dissipation materials quickly and easily, Thermal Grease may be a better choice.

· Professional needs: If your application requires higher thermal conductivity and can accept a more complicated application process, thermal paste may be more suitable.

 

Thermal Grease and thermal paste each have their own advantages and disadvantages. Which material to choose depends on your specific needs and device type. Choosing the most suitable thermal conductive material based on device requirements, application difficulty and budget will help improve your heat dissipation effect and device performance.

Huizhou Jiahe Cube Technology Co., LTD., founded in 2002, is a diversified intelligent enterprise integrating product research and development, production and sales.

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