The be quiet! Silent Loop 3 420mm is an all-in-one liquid CPU cooler designed to manage high thermal loads while maintaining a quiet environment. It features a large 457 x 140 x 27 mm aluminum radiator with a black spray-painted finish, paired with three Silent Wings 4 140mm PWM high-speed fans. These fans utilize fluid dynamic bearings to ensure a lifespan of up to 300,000 hours, delivering an airflow of 78.4 CFM at full speed to efficiently dissipate heat. At the heart of the system is a copper cooling block with nickel plating and a 1,800 mm² fin area, powered by a 3-chamber pump with a 6-pole 3-phase motor. You can adjust the pump speed between 1700 and 3500 rpm via a 4-pin PWM connector to balance performance and noise. The unit is equipped with flexible sleeved tubes measuring 400 mm and includes a refill port for long-term maintenance, along with a 100ml bottle of coolant for easy top-ups. This cooler is compatible with a wide range of sockets, including Intel 1851, 1700, 1200, 1150, 1151, 1155 and AMD AM5, AM4, TR5, and TR4. For those who enjoy customizing their build's aesthetics, it includes ARGB lighting with a 3-pin 5V addressable connector. It is a suitable choice for enthusiasts building high-performance workstations or gaming PCs who need a robust cooling solution that fits a large chassis.