Arctic Liquid Freezer III Pro 420mm ARGB CPU Liquid Cooler

The ARCTIC Liquid Freezer III Pro 420mm ARGB (ACFRE00185A) is a flagship all-in-one CPU liquid cooler built for enthusiast-grade thermal management. Anchored by a 420mm radiator measuring 38mm thick — substantially deeper than the conventional 27mm standard — it holds more liquid volume to absorb heat spikes and sustain cooling performance under sustained workloads. Three P14 Pro A-RGB fans sit across the radiator, each spinning between 400 and 2500 RPM under PWM control. At any given speed they deliver up to 110 CFM (186 m³/h) of airflow at 5.2 mmH₂O static pressure, backed by fluid dynamic bearings for low-noise, long-life operation. A-RGB Gen2 illumination — 12 LEDs in total — integrates with popular RGB ecosystems for synchronized lighting control. The copper cold plate uses micro-skived fins to maximise surface area contact with the CPU heat spreader. ARCTIC's offset mounting geometry deliberately shifts the cold plate toward the CPU's primary thermal hotspot rather than centering it geometrically, improving heat transfer where it matters most. An Intel Contact Frame is included to optimise contact pressure on Intel LGA1700 and LGA1851 platforms, which helps protect the CPU die over extended use. A built-in VRM fan operates between 400 and 2500 RPM, actively directing airflow over the motherboard's voltage regulation circuitry — a practical advantage when running power-hungry processors at sustained loads. The cooler ships with pre-installed, pre-wired fans and includes both a splitter cable (for individual channel control of pump, VRM fan, and radiator fans) and an all-in-one cable for single-PWM-header synchronisation. Reinforced EPDM tubing with braided sheathing connects the pump block to the 38mm radiator via 500mm tubes (outer diameter 12.4mm, inner 6.0mm), providing flexibility during installation without sacrificing durability. An animated online manual accompanies the straightforward mounting hardware. Verified Specifications: • Radiator size: 420mm | Radiator thickness: 38mm • Fans: 3× P14 Pro A-RGB, 140mm, 400–2500 RPM (PWM), Fluid Dynamic Bearing • Fan airflow: 110 CFM / 186 m³/h | Static pressure: 5.2 mmH₂O • Fan connector: 4-pin PWM | Fan current/voltage: 0.35 A / 12 V DC • Pump speed: 800–2800 RPM (PWM) | Pump current/voltage: 0.35 A / 12 V DC • VRM fan: 400–2500 RPM (PWM) | VRM fan current/voltage: 0.05 A / 12 V DC • Cold plate: Copper, micro-skived fins • Tube length: 500mm | Outer/inner diameter: 12.4mm / 6.0mm • LEDs: 12× A-RGB Gen2 | LED current/voltage: 0.40 A / 5 V DC • Socket support: Intel LGA1700, LGA1851; AMD AM4, AM5 • Operating ambient temperature: 0–40 °C • Warranty: 6 years