Arctic Liquid Freezer III Pro 420 ARGB White CPU Liquid Cooler

The ARCTIC Liquid Freezer III Pro 420 ARGB White is a premium all-in-one CPU liquid cooler designed to handle the thermal demands of today's most power-hungry processors. Built around a 420mm radiator with an industry-leading 38mm thickness, this AIO holds significantly more liquid than conventional 27mm alternatives, enabling it to absorb heat spikes more effectively and maintain lower sustained temperatures under continuous load. At the heart of the cooling array sit three 140mm P14 Pro fans. These redesigned fans deliver improved airflow and static pressure across the RPM range — quieter at low duty cycles and capable of pushing greater performance reserves when the system calls for it, striking a practical balance between silence and cooling headroom. A standout engineering choice is the offset cold-plate mounting system. Rather than sitting centred on the CPU lid, the cold plate is deliberately shifted toward the known hotspot region of Intel and AMD processors, improving thermal contact precisely where heat density is highest. This design choice is supported for a wide range of sockets, covering Intel Core i3 through i9 and Core Ultra 5/7/9 as well as AMD Ryzen 3 through Ryzen 9 platforms. The integrated VRM fan is PWM-controlled and actively cools the voltage regulator modules on the motherboard — a commonly overlooked heat source that can throttle overall system stability under extended workloads. Fan cables are routed internally within the sleeve for a cleaner installation, reducing cable clutter without additional management work. Tubing is constructed from reinforced EPDM with a braided external sheathing, adding mechanical protection and reducing the risk of kinking or wear over time. Installation is further simplified through pre-installed and pre-wired fans alongside an animated online setup guide from ARCTIC. Two wiring modes are supported: a splitter cable allows independent control of the pump, VRM fan, and radiator fans, while an all-in-one cable synchronises all components through a single PWM signal. ARGB lighting integrated into the fans and pump head allows synchronisation with compatible motherboard ARGB headers, enabling coordinated lighting across a white-themed build. Verifiable Specifications: - Radiator size: 420mm - Radiator thickness: 38mm - Fan size: 140mm x 3 - Lighting: ARGB - Tubing material: Reinforced EPDM with braided sheathing - Colour: White - SKU: ACFRE00189A - Warranty: 6 years - Compatible sockets: Intel Core i3/i5/i7/i9, Core Ultra 5/7/9; AMD Ryzen 3/5/7/9 - Control: PWM (dual-mode: splitter cable or all-in-one cable)