be quiet Silent Loop 3 420 High Performance CPU Water Cooler - 420mm

Superior technology and cooling
Silent Loop 3 420mm is the virtually inaudible and incredibly high performing All-in-One water cooling unit with state-of-the-art technology.

- Highly engineered cooling block design
- Powerful 3-chamber pump design significantly reduces turbulences and noise
- Dampened and adjustable pump with 6-pole motor
- 3 Silent Wings 4 140mm PWM high-speed fans with radiator corners for virtually inaudible operation
- Incredibly high cooling performance
- Elegant premium design with discreet ARGB lighting
- Easy-to-access refill port and included coolant bottle for a long lifespan
- Flexible sleeved tubes and a convenient mounting ensure easy handling
- 3-year manufacturer’s warranty

Obsession with details
The cooling block of Silent Loop 3 420mm is undisputed. The explanation may look complicated, but we owe it to our most loyal fans and all the enthusiasts out there: The cooling block boasts a 1,800 mm² fin area, which is an increase of up to 2x compared to many other AiO's in this class. This greatly improves heat transfer and makes sure to cover all hot spots on the CPU. The large fin area could only be achieved by a specially developed screwless design for attaching the heat plate. The internal design of the flow path takes care that all areas are flowed to evenly to achieve high performance regardless of the CPU platform.

Enjoy the silence
A powerful PWM pump with 3-chamber design ensures the very high-performance of Silent Loop 3 420mm and is whisper-quiet at the same time. The second of its 3 chambers acts as a reservoir and offers enough space for the coolant to spread out and thus reduces turbulences before the liquid leaves the pump unit. In combination with the 6-pole 3-phase motor this results in a smooth and consequently silent operation

Virtually inaudible operation - period
Silent Loop 3 420mm features 3 Silent Wings 4 140mm PWM high-speed fans. These fans feature silence-optimized fan blades and a funnel shaped air outlet, making Silent Wings 4 140mm PWM high-speed a fan that makes no compromises between very quiet operation and highest performance. The corners of the frame are designed to minimize air leakage on radiators.

Be ready for any setup
Silent Loop 3 420mm is a meticulously crafted masterpiece of German engineering. All parts integrated are of highest quality and work as precise as a clockwork, ultimately leading to a cooling performance ready for virtually any situation.

Simplified refilling process for a long lifespan
An easy-to-access refill port makes for convenient handling, safe refilling and comfortable maintenance. The coolant bottle included extends the lifespan.

The perfect mix between power and elegance
The cooling block’s design is iconic and unmistakable. We kept it all-black and elegant to represent the sheer cooling power Silent Loop 3 420mm offers, despite being barely audible. Optionally, you can turn on ARGB LEDs. Silent Loop 3 420mm is a statement in your PC case: you strive for the maximum in any discipline.

General data
- Model: Silent Loop 3 420mm
- Color option: Black
- Dimensions radiator, incl. fan (H x W x D), (mm): 475 x 140 x 52
- Dimensions cooling block (H x W x D), (mm): 93.5 x 80 x 56
- Total weight (kg): 1.38
- Socket compatibility Intel: 1851 / 1700 / 1200 / 1150 / 1151 / 1155
- Socket compatibility AMD: AM5 / AM4
- Noise level (dB(A)) at 50% / 75% /100% rpm: 19.4 / 29.3 / 34.3
- Number of fans: 3
- Lighting connector: 3 Pin 5V Adressable
- Tube length (mm): 400
- Refill port: Yes

Pump specifications
- Pump speed (rpm): 3500
- Pump adjustable (rpm): 1700 - 3500
- Pump connector: 4-pin PWM

Radiator specifications
- Dimensions (L x W x H), (mm): 457 x 140 x 27
- Radiator material / finish: aluminum / black spray painted
- Base material / finish: copper / nickel plating

Fan specifications
- Fan model: Silent Wings 4 140mm PWM
- Fan dimensions (mm): 140 x 140 x 25
- Speed at 100% PWM (rpm): 1900
- Airflow at 100% PWM / 12V (CFM / m3/h): 78.4 / 133.2
- Air Pressure at 100% PWM / 12V (mm H2O): 2.36
- Bearing technology: FDB
- Motor technology: 6-pole fan motor
- Rated Voltage (V): 12
- Input current (A): 0.30
- Safety current (A): 0.40
- Input power (W): 3.6
- Connector: 4-pin PWM
- Cable length (mm): 500
- Lifespan (h / 25°C): 300,000