Arctic has introduced the MX-7 compound, succeeding the MX-6 as its primary thermal paste. This new version features a significantly higher viscosity, a strategic change designed to counter the “pump-out” effect often seen in contemporary high-heat-density processors.
The MX-7 is engineered to be notably thicker than previous versions, a design decision focused on achieving long-term stability. “Pump-out,” a process where thermal cycles cause less viscous pastes to move away from the die’s center, has been a common issue for direct-die cooling in GPUs and gaming laptops. Arctic states that the MX-7’s increased cohesiveness will help it maintain its bond line integrity much longer than typical thermal pastes.
This altered consistency necessitates a different application method. The manufacturer advises against the “spread with a spatula” technique, which was common with the softer MX-4. The high viscosity of MX-7 could lead to uneven application if spread manually. Arctic suggests applying a substantial amount in a cross pattern, allowing the cooler’s mounting pressure to spread the material. This method aims to create a uniform layer, filling microscopic gaps without trapping air.
The MX-7 compound is entirely non-conductive and non-capacitive, eliminating the risk of short circuits if it accidentally spills onto system components. Arctic has also included a QR-code authenticity check on the packaging to verify the product’s genuineness. The MX-7 is currently offered at a launch discount, with a 2g syringe priced at €6.49, a 4g variant at €6.99, and an 8g tube at €8.49. A bundle containing a 4g syringe and six MX-Cleaner wipes is also available for €8.29 for users needing to remove old thermal paste.
