ARCTIC MX-7 vs PTM7950 Thermal pad 40x80x0.25mm phase change thermal pad

Overview of ARCTIC MX-7 and PTM7950 Thermal Pad

The ARCTIC MX-7 is priced at £7.29, while the PTM7950 Thermal Pad is significantly more expensive at £19.99. Both products are designed to enhance thermal conductivity, but they approach this goal through different methods: the MX-7 is a thermal paste, and the PTM7950 is a thermal pad.

The MX-7 boasts a high filler content that enables exceptional heat transfer and long-term stability, preventing issues like pump-out and dry-out. In contrast, the PTM7950 utilises a phase change material that becomes more effective as temperatures rise, specifically changing at 45 °C, which allows for optimal thermal performance during operation.

Thermal Performance

When it comes to thermal performance, the ARCTIC MX-7 is noted for its "next-level thermal performance," which results from its dense and highly viscous consistency. Its high filler content ensures efficient heat transfer, making it suitable for various devices, including CPUs and GPUs.

On the other hand, the PTM7950 Thermal Pad offers a thermal conductivity rating of 8.5 W/mK, which is particularly advantageous for high-performance integrated circuits. This level of conductivity, combined with its phase change capabilities, allows for effective heat management once the pad reaches operational temperatures. Both products excel in thermal performance, but the MX-7 is specifically designed for application in scenarios where longevity and stability are paramount.

Application Method

The application method for the two products differs significantly. The ARCTIC MX-7 is designed to be applied under pressure, which means it cannot be manually spread. Its low adhesion allows it to naturally distribute itself to form a thin bond line, reducing the risk of air bubbles that can hinder thermal transfer.

In contrast, the PTM7950 Thermal Pad is a pre-cut thermal pad that can be placed directly onto the surface of components. This simplicity makes it user-friendly for those who may not feel comfortable applying thermal paste. The ease of application for the PTM7950 is a key advantage, especially for users who prefer a quick solution without the need for precision application.

Longevity and Stability

The ARCTIC MX-7 has been designed with high cohesion to prevent issues such as pump-out and dry-out, ensuring consistent performance over time. This stability means that users can expect long-lasting results without the need for frequent reapplication, making it a dependable choice for long-term use.

Meanwhile, the PTM7950 Thermal Pad claims a reliability that includes enduring 1000 hours of bake at 150 °C and surviving 1000 thermal cycles. This level of durability makes it particularly appealing for high-performance devices that may undergo significant temperature fluctuations. Both products promise longevity, but their methods of achieving stability differ, with the MX-7 focusing on paste application and the PTM7950 leveraging material properties.

Safety Considerations

Safety is another important aspect to consider. The ARCTIC MX-7 is electrically non-conductive and non-capacitive, which means there is no risk of short circuits or electrical discharge when applied to sensitive components like CPUs and GPUs. This safety feature makes it a reliable choice for a range of devices.

Conversely, while the PTM7950 Thermal Pad does not explicitly mention electrical safety, its design as a phase change material suggests that it is also engineered with safety in mind. However, the MX-7’s established reputation for non-conductivity may appeal more to users concerned about electrical safety.

Included Accessories

The ARCTIC MX-7 package includes MX Cleaner, which is specifically designed to remove old thermal paste and prepare surfaces for optimal application. This added accessory enhances the overall user experience by ensuring that the application is done correctly and effectively.

The PTM7950 Thermal Pad package is more comprehensive, including not only the thermal pad but also a Phillips screwdriver, cleaning cloth, spatula, and cleaning brush. This kit provides users with everything they need for installation, making it a strong contender for those who appreciate having the necessary tools at hand.

Price Comparison

In terms of price, the ARCTIC MX-7 is considerably more economical at £7.29 compared to the PTM7950 Thermal Pad's £19.99. This price difference reflects the varying methods and materials used in their construction. While the MX-7 offers excellent thermal performance and longevity at a lower price point, the PTM7950 justifies its higher cost through its advanced phase change technology and included accessories.

Which should you buy?

Deciding between the ARCTIC MX-7 and the PTM7950 Thermal Pad ultimately depends on your specific needs and preferences. If you require a reliable, cost-effective thermal paste that provides excellent long-term stability and safety, the MX-7 is a fantastic choice. However, if you prefer an easy-to-apply thermal pad with advanced phase change capabilities and additional tools included, the PTM7950 may be worth the extra investment. Each product has its strengths, making them suitable for different types of users and applications.