PREMIUM Performance Thermal Paste

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Highest Thermal Conductivity

The surfaces of processor chips and cooler floors are covered with microscopic dents; ARCTIC‘s MX-4 thermal paste is composed of carbon microparticles which fill these cavities. This leads to extremely high thermal conductivity, guaranteeing that heat is dissipated quickly and efficiently from the CPU or GPU. With its outstanding performance, the MX-4 is not only an excellent choice for overclockers and enthusiasts, but also for other sapplications that require thermal transmission.  MX-4 proves without a doubt that great performance does not necessarily require a high price.

Easy Application

Thanks to its consistency, MX-4 is easy to apply, even for beginners. The video below demonstrates the application technique to avoid air pockets between processors and coolers.

Secure Usage

In contrast to pastes based on metal oxides or liquid metal, ARCTIC’s MX-4 is metal-free and not electrically conductive. This eliminates the risk of short circuiting, and eliminates the need to worry about corrosion damage to the radiator floor caused by liquid metal.

Available in Various Sizes

ARCTIC MX-4 is available in sizes ranging from 2 to 45 grams. Resealable packaging prevents the paste from drying out.

Long-lasting Durability

Compared to metal or silicone thermal pastes, you don't have to make any compromises with the MX-4: once applied, it lasts up to 8 years.

Proven quality

While the packaging of our thermal paste has changed several times over the years, the composition of the formula has remained the same. Our MX pastes have long stood for high performance and quality, and with our new, recyclable packaging, we aim to reduce CO2 emissions and thus make a contribution to the environment.

Since the mere thermal conductivity value cannot provide any information about the actual performance, we put our thermal grease up against a broad field of competitors under laboratory conditions. The temperature difference between CPU and cooler base was measured.

How is it tested?

The temperature difference between the CPU IHS and the cooler base is determined with a laboratory device. This allows precise adjustment of the power and contact pressure to be transmitted and highly accurate temperature measurement. The contact surfaces are milled flat with very fine grooves, which corresponds to high-quality CPU coolers.

transmitted power: 150 Watt( ≈ AMD Ryzen 7 3700X All-Core-Boost) 

Contact area: 16,0625 cm2 [according to an AM4 CPU]

Contact force: 562.5 N (≙57.359 kgf or lb)

Why are CPUs only conditionally suitable for measuring the performance of thermal paste?
The thermal resistance between the CPU DIE and the IHS can change considerably over time. The measuring sensors in the DIE are not very accurate, so we use a laboratory device here.
Why are the stated thermal conductivity values of a paste not meaningful?
Often the values are stated many times too high and have nothing to do with reality. Typical values of a high-performance paste are between 1 and 5 W/mK. Just as important as the thermal conductivity value is the minimum layer thickness of a paste (at a given contact pressure) in order to minimise the temperature difference between CPU and cooler.

Technical specifications & manual

Density 2.50 g/cm³
Viscosity 870 poise
Volume Resistivity 3.8 X 1013 Ω-cm
Continuous Use Temperature -50~150 °C
Colour Grey

  • Width: 41 mm
  • Height: 187 mm
  • Length: 10 mm
  • Weight: 0.08 kg

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