In the world of computers, particularly among enthusiasts who build their own machines, thermal paste often raises many questions. Though it’s a small and often overlooked component, its role is crucial for the proper functioning of a processor. In this post, I’ll explain what thermal paste is, why it’s important, and how to choose the best one for your CPU.
What is thermal paste for a CPU?
Thermal paste is a special substance designed to improve the thermal conductivity between the processor (or another integrated circuit) and the cooling system, typically a heatsink or liquid cooling solution. During operation, a processor generates a significant amount of heat that must be effectively dissipated to prevent overheating. To achieve this, the surfaces of the processor and heatsink need to have the best possible thermal contact.
Unfortunately, even the most precisely manufactured components aren’t perfectly flat—on a microscopic level, their surfaces are rough and have tiny pores. Thermal paste fills in these imperfections, eliminating air (which is a poor conductor of heat) and enabling more efficient heat transfer.
Why is thermal paste important?
Applying thermal paste is essential for ensuring the stability of your processor. Without it, or if applied incorrectly, the processor may overheat, leading to reduced performance (a phenomenon known as throttling), and in extreme cases, even hardware damage. Thermal paste helps maintain optimal operating temperatures, which in turn allows for longer lifespan and system stability.
How to choose the best thermal paste for Your CPU?
There are many types of thermal pastes available on the market, differing in chemical composition, consistency, and price. Here are a few key factors to consider when choosing:
- Thermal conductivity: This is the primary parameter to pay attention to. The thermal conductivity value, expressed in watts per meter-kelvin (W/mK), indicates how effectively the paste can transfer heat. The higher the value, the better the paste will perform.
- Ease of application: Some pastes may be more viscous or harder to apply than others. When choosing a paste, consider its consistency and application method to avoid issues during the process.
- Durability: Pastes also vary in terms of longevity. Some retain their properties for longer, meaning they don’t need to be replaced as often. This is particularly important for those who don’t want to regularly open their computer.
- Composition: Pastes come in various compositions—from metallic compounds to ceramic, carbon, and silicone-based options. Metallic pastes, like those based on silver, are preferred where low energy loss and good thermal conductivity are crucial. On the other hand, silicone pastes, which have higher specific resistance making them better insulators, may have lower thermal conductivity.
- Price: The price of thermal pastes can vary significantly. However, it’s important to remember that the most expensive paste isn’t always the best. It’s a good idea to compare several options and choose one that best meets your needs and budget.
Thermal pastes available in Our offer
Our selection includes a wide range of thermal pastes carefully chosen to meet the needs of both amateurs and professionals. Here are a few of them:
- H Series Pastes: Basic silicone pastes (H, H2, H3) offering ease of application and solid thermal conductivity (>0.88 W/mK). Ideal for users looking for a good quality paste at an affordable price. The individual H pastes differ in density (H3 < H < H2), and consequently, also in dielectric properties.
- HP Paste: Improved thermal conductivity compared to basic silicone pastes (>1.5 W/mK). HP is a great choice for those who want to ensure better cooling for their processor without overspending.
- HPX Paste: An advanced version of HP paste, offering even better thermal conductivity (>2.8 W/mK) and longer durability. Designed for more demanding users who want to maximize the cooling potential of their system.
- AG Copper Paste: Enhanced with copper, which significantly increases thermal conductivity (3.10 W/mK). This is the ideal solution for those who need the highest efficiency in heat dissipation, especially when using copper heatsinks (400 W/mK).
- AG Gold Paste: A premium product offering an optimal combination of ease of application and exceptionally high thermal conductivity (>3.57 W/mK). Gold Paste is intended for those seeking the best solutions available on the market.
- AG Silver Paste: Contains silver particles, known for their exceptional thermal conductivity (>3.80 W/mK). Silver Paste is the choice for advanced users who demand the highest cooling performance.
- AG Extreme Paste: The most advanced paste in our offer, designed for extreme operating conditions. Perfect for overclocking enthusiasts and professionals who need the absolute best in heat dissipation (6 W/mK).
Conclusion
Choosing the right thermal paste is crucial for maintaining optimal CPU temperatures and the overall system. Investing in a high-quality product ensures the longevity and stability of your computer. The thermal pastes available in our offer are an investment in the safety and performance of your equipment.
Learn more about Thermal Conductivity on our website.
