When it comes to maximizing the cooling performance of your computer’s CPU or GPU, using high-quality thermal paste is crucial. Two popular options in the market are Arctic MX-4 and Coolthermo thermal paste. In this article, we will compare and contrast these two thermal pastes, exploring their features, performance, and overall value for the end user.

1. Composition and Application:

Arctic MX-4 and Coolthermo thermal pastes are both designed to facilitate efficient heat transfer between a processor and its cooling solution. The Arctic MX-4 is a carbon-based thermal compound, while Coolthermo is typically a silicone-based compound. Arctic MX-4 has a moderate viscosity, making it easy to apply, while Coolthermo is often slightly thicker but still manageable.

2. Thermal Conductivity:

Thermal conductivity is a vital factor when evaluating thermal pastes. Arctic MX-4 boasts a thermal conductivity of 8.5 W/(m·K), which is considered excellent for most applications. On the other hand, Coolthermo offers a thermal conductivity ranging from 7.5 to 8.5 W/(m·K), providing comparable performance to the MX-4. Both pastes exhibit superior thermal properties that help dissipate heat effectively.

3. Longevity and Durability:

The durability of thermal paste is essential since it should maintain its efficiency over an extended period. Arctic MX-4 is known for its long-lasting performance, with minimal degradation even after years of use. Similarly, Coolthermo thermal paste also demonstrates excellent longevity and remains stable under various operating conditions. Users can expect consistent thermal performance from both pastes without the need for frequent reapplication.

4. Ease of Application:

Applying thermal paste should be a hassle-free process, even for beginners. Arctic MX-4 and Coolthermo thermal pastes are both user-friendly in terms of application. The MX-4 features a smooth consistency that spreads easily and evenly across the CPU or GPU surface. Coolthermo, although slightly thicker, can also be applied with relative ease. Both pastes have good coverage, ensuring efficient heat transfer between the processor and the cooler.

5. Price and Value:

Pricing is often a crucial factor for users looking to make the best choice for their budget. The Arctic MX-4 tends to be competitively priced, offering a reasonable balance between cost and performance. Coolthermo thermal paste also falls within a similar price range, making it an attractive option for those seeking value for money. Ultimately, the choice between the two will depend on personal preferences and the specific needs of the system.


When comparing Arctic MX-4 and Coolthermo thermal pastes, it becomes evident that both options provide excellent thermal conductivity, durability, and ease of application. The Arctic MX-4 offers a slightly higher thermal conductivity rating, while Coolthermo is known for its long-lasting performance. In terms of pricing, both pastes offer value for money. Therefore, the decision between these two thermal pastes will depend on individual preferences, budget constraints, and the specific requirements of the system. Whichever option you choose, upgrading to a high-quality thermal paste like Arctic MX-4 or Coolthermo will undoubtedly enhance the cooling efficiency of your CPU or GPU, leading to improved performance and stability.

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