Arctic MX-4 20G Thermal Paste (Grey)

The Arctic MX-4 20G Thermal Paste (Grey) is a special paste that helps to keep  our computer’s processor (CPU) or graphics card (GPU)to stay cool. When a processor works, it produces heat. A metal cooler (heatsink) is placed on top to remove that heat. But even though both surfaces look smooth, they actually have tiny rough spots and gaps. MX-4 fills in those tiny gaps so heat can move more easily from the processor to the cooler. It uses carbon-based particles to transfer heat well, and since it does not contain metal, it does not conduct electricity. This makes it safe to use because even if a small amount spreads outside the chip area, it will not cause a short circuit. It also helps maintain steady temperatures during heavy tasks like gaming, video editing, 3D rendering, or overclocking. The 20-gram pack is a large size, which is useful for people who build or repair many computers.

Another big advantage of MX-4 is that it is very easy to apply. It has a smooth texture that spreads nicely when we press the cooler down, and it does not require any waiting time to “cure” or settle. We can start using our system right after installing it. It also does not dry out, crack, or leak easily, which means it can last for many years—often up to 8 years under normal use. It works well in both low and high temperatures, so it can be used in desktops, laptops, graphics cards, and even gaming consoles. Overall, Arctic MX-4 20G is popular because it offers strong cooling performance, safety, long life, and good value for money.

Key Feature

High Thermal Conductivity
Arctic MX-4 uses a carbon microparticle formula that fills tiny gaps between the processor and the heatsink, allowing heat to transfer quickly and efficiently. This helps keep your CPU or GPU temperatures lower compared to using little or no thermal paste, improving cooling performance during heavy workloads.

Safe and Non-Conductive Formula
Unlike some thermal pastes that contain metal or liquid metal, MX-4 is completely metal-free and does not conduct electricity. This reduces the risk of short circuits or damage to components if a small amount spreads beyond the chip surface during installation.

Smooth Consistency for Easy Application
The paste has a smooth, non-drip texture that spreads evenly under pressure, making it straightforward to apply. We don’t need to wait for it to cure before powering up our system — the cooler can be installed and used right away.

Long-Lasting Durability
Arctic MX-4 is designed to maintain its performance over many years without drying out, cracking, or degrading. It remains effective across a wide range of temperatures, which means less frequent re-application and more reliable cooling over time.

Generous 20-Gram Size
The larger 20 g size provides enough thermal paste for multiple builds or future re-applications. This makes it especially useful for system builders, technicians, or enthusiasts who work on several computers.

Technical Specification