ARCTIC COOLING ACTCP00007B MX-4 2019 Edition thermal paste 2.0g

Carbon micro-particle thermal paste 2.0 g

ARCTIC MX-4 2019 Edition is a carbon-based thermal compound supplied in a 2.0 g syringe. It targets PC builders and upgraders who need reliable heat transfer for CPUs, GPUs and other chip packages. The paste is non-electrically conductive and non-capacitive, so accidental spread onto surrounding circuitry will not cause shorts. Its non-curing formula remains stable for at least eight years without drying out.

Practical limits of the 8.5 W/mK conductivity

The material delivers a thermal conductivity of 8.5 W/mK and a viscosity of 870 poise at a density of 2.5 g/cm³. These figures set the practical ceiling for heat flow between a die and a cooler; the paste cannot overcome a cooler's own thermal resistance or a case's airflow limits. Because it contains no metal particles, it avoids the galvanic corrosion and electrical risk that liquid-metal compounds introduce. The non-bleeding characteristic means the compound stays in place under thermal cycling.

Check mounting pressure and surface condition

Before ordering, verify that your cooler's mounting mechanism provides even pressure across the die so the 2.0 g volume can form a thin, uniform layer. Confirm that both the die and cold-plate are clean, flat and free of old compound residue; any gaps or contamination will increase thermal resistance beyond what the 8.5 W/mK rating can compensate for. The syringe volume is sized for several typical desktop applications but may be insufficient for large server dies or multiple GPU repastes.