be quiet! is a well-known manufacturer of premium PC components and now introduced its latest AIO water cooler Silent Loop 3. This is a serious packaged water cooler with an improved pump and the latest Silent Wings 4 fans with closed fan frames to maximize air pressure, an iconic cooling block design with ARGB LEDs, radiator sizes up to 420mm, and an easy-to-access refill port.

Virtually inaudible operation – period!

Silent Loop 3 lives up to the “be quiet!” brand name: a powerful 6-pole, 3-phase PWM pump with 3-chamber design ensures high-performance at whisper-quite noise levels. The second of the three chambers acts as a reservoir and offers space for the coolant to spread out, thus reducing turbulences before the liquid leaves the pump unit. And it’s not just the pump that’s silent: the radiator features up to three Silent Wings 4 PWM high-speed fans with silence-optimized fan blades and a funnel-shaped air outlet. The corners of the fan frame are designed to minimize air leakage, resulting in a perfect balance between quiet operation and the highest performance.

Obsession with details

The cooling block of Silent Loop 3 is unique in design and elegant in appearance. The block boasts an 1,800 mm² fin area, which is an increase of up to 2x compared to many other AiO’s in this class. Such a large fin area is achieved by a specially developed screwless design for attaching the heat plate, resulting in a greatly improved heat transfer and making sure all hot spots on the CPU are covered. All three Silent Loop 3 models are able to effortlessly cool all processors on current consumer sockets; Silent Loop 3 360mm and Silent Loop 3 420mm even allow cooling of Threadripper processors (mounting kit included). To represent the sheer cooling power of Silent Loop 3, the cooling block design is all-black, with discreet ARGB LEDs for a unique look.

"With Silent Loop 3, we’ve pushed our engineering even further to create an AiO cooler that delivers top-tier performance while staying impressively silent. The powerful pump, optimized cooling block, and our high-pressure Silent Wings 4 fans work together to keep even high-end processors cool with minimal noise. Every detail is designed for efficiency, durability, and ease of use, making Silent Loop 3 the perfect choice for anyone who wants quiet high-performance liquid cooling," says Aaron Licht, CEO of be quiet!.

Simplified refilling process for a long lifespan

As always, with be quiet! AiO products, Silent Loop 3 features an easy-to-access refill port that makes for convenient handling, safe refilling and comfortable maintenance. A cooling bottle is included to extend the lifespan of the water-cooling unit. Flexible, premium sleeved tubes enable simple and flexible installation even in cases with limited space. All Silent Loop 3 models come with a 3-year manufacturer’s warranty.

Silent Loop 3 will be available for sale from February 25 at the suggested retail price of $174.90/€174.90/£124.99 (420mm), $164.90/€164.90/£119.99 (360mm), and $139.90/€139.90/£99.99 (240mm).

- Features

• 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

WHAT A COOL(ING) BLOCK

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.

SUPERIOR PUMP DESIGN

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.

SILENT WINGS 4 FANS

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.

INCREDIBLY HIGH COOLING PERFORMANCE

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. 

EASY TO REFILL

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

S-TIER DESIGN

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.

- Specifications

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)	2.01
Socket compatibility Intel	1851 / 1700 / 1200 / 1150 / 1151 / 1155
Socket compatibility AMD	AM5 / AM4 / TR5 / TR4
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	✓

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

Accessories

Thermal grease (Type)	Included
Mounting set	Intel, AMD
Adapter cables	Y-cable
Bottle of coolant (ml)	✓ / 100
User manual languages	CN, DE, EN, ES, FR, JP, PL, RU, TW, UA

Service

Warranty (Years)	3
International hotline / free of charge	✓/ DE, FR, US