Arctic Freezer 4U-M Rev.2 CPU Air Cooler

The ARCTIC Freezer 4U-M Rev.2 is a single-tower CPU air cooler purpose-built for demanding server and workstation environments. Engineered to handle processors with up to 64 cores and a TDP of up to 350 watts, it brings enterprise-grade thermal performance without sacrificing compatibility or rack space. The cooler ships with two 120 mm PWM fans arranged in a push-pull configuration, both drawing from ARCTIC's P-series static-pressure fan lineup. These fans are designed specifically for high-fin-density heatsinks, ensuring strong airflow even under sustained, power-hungry workloads. Each fan uses a dual ball bearing, making them rated for 24/7 continuous operation and more resistant to heat-induced wear and contamination compared to sleeve or fluid-dynamic bearings. Socket compatibility is one of the Freezer 4U-M Rev.2's standout strengths. It supports Intel LGA 4710, LGA 4189, and LGA 4677 platforms, AMD SP6, sTR5, SP3, TR4, sTRX4, and sWRX8 sockets, and also accommodates Ampere Altra LGA4926 processors (compatibility noted with an asterisk by ARCTIC). This breadth makes it a versatile choice for mixed-platform server rooms and workstation builds. Despite supporting such high-TDP processors, the entire cooler assembly consumes only 2.88 watts of power — a meaningful efficiency advantage in rack environments where aggregate power draw matters. The heatsink stands at an optimised 145 mm installation height with a footprint of 156 x 124 mm, ensuring compatibility with standard 4U server racks as well as most consumer 4U cases. The design also accommodates dual-socket motherboards, and fan orientation can be swapped to redirect airflow as the build requires. Memory clearance is 53 mm, allowing RAM modules with moderate heatsinks to coexist without interference. ARCTIC MX-6 thermal paste is included in the box — a non-electrically-conductive, non-capacitive compound intended to reduce thermal resistance between the CPU heat spreader and the cooler base. Verified Specifications: - Fan size: 120 mm (x2, push-pull) - Fan type: PWM, static-pressure P-series - Fan bearing: Dual ball bearing - Cooler height: 145 mm - Heatsink footprint: 156 x 124 mm - Max supported TDP: 350 W - RAM clearance: 53 mm - Power consumption: 2.88 W - Intel sockets: LGA 4710, LGA 4189, LGA 4677 - AMD sockets: SP6, sTR5, SP3, TR4, sTRX4, sWRX8 - Ampere Altra: LGA4926 (asterisked compatibility) - Thermal paste: ARCTIC MX-6 (included) - Warranty: 6 years - SKU: ACFRE00133B