BE QUIET! SILENT LOOP 3 (BW026) 420mm ARGB liquid cooler

BE QUIET! SILENT LOOP 3 (BW026) 420mm ARGB Liquid CPU Cooler

The Silent Loop 3 420mm is a virtually inaudible, all-in-one liquid CPU cooling unit with ultra-high cooling performance, engineered with cutting-edge technology.

• High-tech cooling block design
• Powerful 3-chamber pump design significantly reduces turbulence and noise
• Damped and adjustable pump with a 6-pole motor
• 3 Silent Wings 4 140mm PWM high-speed fans for virtually silent operation
• Extremely high cooling capacity
• Elegant premium design with subtle ARGB lighting on the block
• Easy-to-access refill port and included coolant bottle for a long lifespan
• Flexible sleeved tubes and convenient mounting ensure effortless installation
• 3-year manufacturer's warranty

Obsession with Detail
The cooling block of the Silent Loop 3 420mm boasts a fin area of 1,800 mm², representing up to a 2x increase compared to many other AIO coolers in this class. This significantly enhances heat transfer and ensures complete coverage of all CPU hot spots. This immense fin surface area was made possible only through a specially engineered screwless cold plate mounting design. The internal flow path is designed to ensure uniform liquid flow across all areas, achieving peak performance regardless of the platform.

PREMIUM PUMP DESIGN - Enjoy the Silence
The powerful PWM pump features a 3-chamber design that provides exceptionally high performance for the Silent Loop 3 420mm while remaining whisper-quiet. The second of the three chambers acts as a reservoir, providing ample space for the coolant to expand and effectively reducing turbulence before the liquid exits the pump. In combination with the 6-pole, 3-phase motor, this delivers exceptionally smooth and quiet operation.

SILENT WINGS 4 FANS - Virtually Inaudible Operation, Period
The Silent Loop 3 420mm is equipped with 3 Silent Wings 4 140mm PWM high-speed fans. These fans feature airflow-optimized blades and a funnel-shaped air outlet, making the Silent Wings 4 140mm PWM a fan that makes zero compromises between whisper-quiet running and maximum cooling performance. The frame corners are specifically designed to minimize air leakage on radiators.

EASY TO REFILL - Simplified Refilling for a Long Lifespan
The easily accessible refill port ensures convenient handling, secure refilling, and effortless maintenance. The included bottle of coolant helps extend the cooler's operational lifespan.

S-TIER DESIGN - The Perfect Blend of Power and Elegance
The design of the cooling block is both iconic and unmistakable. Finished in an elegant all-black look, it embodies the sheer cooling power delivered by the Silent Loop 3 420mm—even while running barely audible. Subtle ARGB LED lighting can be activated if desired.