ARCTIC COOLING MX-5 2.0 g thermal paste with spatula 4g

MX-5 Thermal Compound

ARCTIC MX-5 is a carbon-based thermal paste designed for CPUs, GPUs and power semiconductor components. The 2.0 g syringe includes a spatula and comes in resealable packaging that prevents the compound from drying out. It is completely metal-free, so it poses no risk of electrical shorts or corrosion on cooler bases. This makes it suitable for builders who want a safe, non-conductive compound for general system assembly.

Sustained Load Behaviour

The paste maintains high long-term stability across a working temperature range of -40 to 180 °C. Its non-drying and non-bleeding properties ensure that thermal resistance stays low over extended periods of heavy use. Carbon microparticles fill microscopic surface cavities to keep heat dissipation efficient without degradation. Users who need a compound rated for liquid-metal longevity or extreme sub-ambient cooling should look elsewhere.

Interface Practical Limits

MX-5 delivers a thermal resistance of 1.9 × 10^13 Ω-cm and a viscosity of 550 poise at a density of 3.2 g/cm³. These figures define the practical performance envelope when mating a processor heat-spreader to a cooler base. The compound allows a very thin bondline regardless of application method, but it does not change the fundamental thermal limits of the cooler or processor package itself.