One of the most high-performing maintenance-free water cooling systems from be quiet! featuring a large channel radiator measuring 457 mm, three durable 140 mm Silent Wings 4 140mm PWM fans, advanced three-chamber pump and controllable ARGB LED lighting with multi-compatibility. Positioned as a high-end product, it can purportedly dissipate up to 400 W of heat quickly. The be quiet! Silent Loop 3 420 liquid cooling system is suitable for top-tier and overclocking Intel and AMD processors, including configurations running in overclocked mode.
Besides the large radiator, the system construction also includes a high-quality copper micro-channel water block with an integrated low-noise pump and a 400 mm hose system. The included 140 mm fans are equipped with durable bearings and support PWM speed regulation. It is compatible with motherboards featuring Intel LGA1851/1700/1200/115X sockets and AMD AM4/AM5. Noteworthy are the mounts for TR5/TRX4/TR4 sockets, allowing installation in workstations based on Ryzen Threadripper.
Highly efficient heat dissipation, advanced three-chamber pump, and silence-oriented design make these cooling systems stand out for demanding high-end setups.
The information in the model description is for reference purposes. Always clarify the specifications and configuration of the product with the online store manager before purchasing. Catalog be quiet! 2026 - new arrivals, bestsellers, and the most relevant models be quiet!.
be quiet! be quiet Silent Loop 3 420 High Performance CPU Water Cooler - 420mm BW026
Superior technology and cooling Silent Loop 3 420mm is the virtually inaudible and incredibly high performing All-in-One wate... morer 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
be quiet! Silent Loop 3 420mm AIO CPU Cooler BW026
The be quiet! Silent Loop 3 420mm AIO CPU Cooler is an advanced liquid cooling solution designed for high-performance systems... more. Its all-in-one design simplifies installation while offering exceptional cooling for various CPU sockets, including the latest Intel and AMD models. This cooler is aimed at users seeking effective thermal management without excessive noise, thus enhancing both gaming and productivity experiences. What sets the Silent Loop 3 apart is its focus on maintaining quiet operation, achieving a noise level as low as 34.3 dBA while providing cooling capacity for CPUs up to 250W TDP. Unlike some high-end alternatives that may sacrifice silence for performance, this cooler succeeds in delivering a balance that suits both casual users and enthusiasts who require efficiency without disruption. Its robust 420mm radiator is designed for cases that can accommodate larger components, providing maximum airflow and cooling potential. This cooler is suitable for users who engage in resource-intensive tasks or gaming who need to keep temperatures low under load. However, it may not be the best choice for compact builds where space is at a premium or for users prioritising portability over performance. What Makes It Different? The Silent Loop 3 distinguishes itself with a focus on silent operation, making it ideal for users who value a quiet workspace without sacrificing cooling efficiency. Compared to entry-level air coolers or smaller AIO options, this model provides a superior cooling solution for demanding applications, ensuring that thermal throttling is less of a concern for high-performance CPUs. Additionally, its aesthetic appeal is understated, devoid of RGB lighting, which may attract users looking for a more professional or minimalist build. This aspect can be a significant consideration for users who prefer a subtle look while still obtaining high performance from their cooling setup. Performance & Everyday Use The Silent Loop 3 features a maximum fan speed of up to 1900 RPM, facilitating impressive airflow of 78.4 CFM to effectively dissipate heat during high workloads. This is particularly beneficial during extended gaming sessions or intensive content creation, where CPUs generate substantial heat. The cooler s efficient design aims to maintain optimal temperatures without introducing disruptive noise, making it suitable for live streaming or professional video editing. With its substantial 420 mm radiator, the cooler can handle the thermal demands of a high-end gaming rig or workstation. When properly installed, users can expect increased stability and performance during demanding tasks, resulting in smoother experiences in both gaming and professional environments. The liquid cooling technology also contributes to longer component lifespans by preventing overheating. Installation is straightforward, and the braided cable management ensures a clean setup, enhancing the overall aesthetics of your build. It's
be quiet! Silent Loop 3 420mm AiO Liquid CPU Cooler in Black BW026
WHAT A COOL(ING) BLOCK Obsession with details The cooling block of Silent Loop 3 420mm is undisputed. The explanation may l... moreook 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 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. SILENT WINGS 4 FANS 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. INCREDIBLY HIGH COOLING PERFORMANCE 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. EASY TO REFILL 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. S-TIER DESIGN 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.
Be Quiet! Silent Loop 3 420mm ARGB Liquid CPU Cooler - BW026 BW026
The be quiet! Silent Loop 3 420mm ARGB liquid CPU cooler delivers powerful thermal performance with a large radiator and thre... moree high-efficiency fans. Designed for quiet operation, it features an advanced pump, ARGB lighting and strong cooling capacity for high-end gaming and workstation systems.
