With its improved composition, the ARCTIC MX-6 has a measurably lower thermal resistance than the MX-4. The basis for calculation is the temperature difference between the cooler base and the heat source (in C) in relation to the applied heat load (in W), which also results in the unit C/W. The higher the thermal resistance, the worse the heat can be transferred through the TIM layer. Thermal insulators, as an example, therefore always have a particularly high thermal resistance, while thermal interface materials usually have a particularly low one.