Arctic Liquid Freezer III Pro 420 - Black AIO CPU Cooler for AM4/AM5, LGA1700, LGA1851

The Arctic Liquid Freezer III Pro 420 is a high-performance all-in-one liquid CPU cooler designed for modern Intel and AMD processors. Featuring a premium-class 38mm thick aluminum radiator with 458x138x38mm dimensions, this cooler delivers superior cooling capacity compared to standard 27mm radiators. The system includes three pre-installed P14 Pro fans (400-2500 RPM, 110 CFM airflow, 5.2 mmH2O static pressure) and an integrated PWM-controlled VRM cooling fan (400-2500 RPM) to maintain stable voltage regulator module temperatures. The offset cold plate design with micro-skived copper fins is optimized for the hotspot locations on both Intel Tile-based and AMD Ryzen processors, ensuring efficient heat transfer across different socket architectures.

Installation is straightforward with pre-installed and pre-cabled fans, an improved Intel contact frame with optimized mounting pressure, and included MX-6 thermal paste (0.8g). The cooler features premium EPDM rubber tubing with internal fiber reinforcement to prevent sagging and ensure long-term durability. Dual control options allow independent management of the pump (800-2800 RPM), VRM fan, and radiator fans, or synchronized control via a single PWM signal. The system operates within 0-40°C ambient temperature range and comes with a comprehensive 6-year warranty, making it an excellent choice for high-performance builds requiring reliable thermal management.

• Premium 38mm thick aluminum radiator (458x138x38mm) with enhanced cooling surface area
• Three P14 Pro high-speed fans with Fluid Dynamic Bearing (400-2500 RPM, 110 CFM, 5.2 mmH2O)
• Integrated PWM-controlled VRM cooling fan (400-2500 RPM)
• Offset cold plate design optimized for Intel LGA1700/LGA1851 and AMD AM4/AM5 hotspots
• Micro-skived copper cold plate for superior heat transfer efficiency
• Premium EPDM tubing with internal fiber reinforcement (450mm length, 6.0mm ID / 12.4mm OD)
• Dual control options: independent or synchronized PWM control
• Pre-installed and pre-cabled fans for easy installation
• Includes MX-6 thermal paste (0.8g)
• 6-year manufacturer warranty
• Compatible with Intel LGA1700, LGA1851, AMD AM4, and AM5 sockets
• Operating ambient temperature: 0-40°C