ARCTIC Liquid Freezer III 420mm ARGB CPU Liquid Cooler ( Black ) ( Liquid Freezer 3 )

The ARCTIC Liquid Freezer III 420mm ARGB (model ACFRE00145A) is a high-capacity all-in-one liquid CPU cooler designed for enthusiast desktop builds that demand serious thermal headroom. Its oversized 420mm radiator provides an expansive surface area for heat dissipation, making it suited to high-TDP processors on both Intel and AMD platforms. For Intel users, the cooler ships with a dedicated LGA1851 and LGA1700 contact frame that distributes mounting pressure evenly across the CPU IHS, helping achieve consistent contact and efficient heat transfer. On the AMD side, ARCTIC has engineered a native 5mm offset mounting position specifically tuned for the multi-die chiplet architecture of Ryzen processors, directing the cold plate toward the primary hotspot of the die complex for more effective thermal coupling. A PWM-controlled VRM fan is integrated into the pump head assembly, actively drawing airflow across the voltage regulator components in the immediate vicinity of the socket. This secondary cooling function can help stabilise motherboard power delivery components during sustained high-load operation. Cable management is simplified by routing the PWM fan cables inside the hose jacket, so only a single cable run is visible from the radiator to the motherboard header. Three 140mm fans are mounted on the 420mm radiator, each supporting ARGB lighting for synchronisation with compatible motherboard RGB ecosystems. Maximum fan speed is rated at 1700 RPM. Note: ARCTIC advises that oversized cooler head designs may conflict with M.2_1 slot components on certain motherboards. Compatibility details and workarounds are documented in the included manual and on ARCTIC’s official support pages. Verifiable Specifications: – Model Number: ACFRE00145A – Radiator Size: 420mm – Fan Maximum Speed: 1700 RPM – Cooling Method: Liquid (water) – Operating Voltage: 12 V – Rated Wattage: 4.2 W – Colour: Black – Material: Polycarbonate (pump head) – Product Dimensions: 45.8 × 14 × 6.5 cm – Item Weight: approx. 2.28 kg – GTIN/UPC: 840033402309 – Compatible Devices: Desktop PC – Batteries Required: No – Socket Support: Intel LGA1851, LGA1700; AMD AM4/AM5 (offset mount)