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Be quiet! Silent loop 3 420mm argb aio liquid CPU cooler 3x140mm silent wings 4 pwm intel AMD tr5 black
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Description
Item No.
4215bfce-52b1-4eeb-958a-6b0c7871e95b
be quiet! Silent Loop 3 420mm ARGB — Black
420mm AIO Liquid3x Silent Wings 43-Chamber PumpARGB
The be quiet! Silent Loop 3 420mm (Black, part number BW026) is a premium 420mm all-in-one liquid CPU cooler engineered for maximum cooling with minimum noise. Three award-winning Silent Wings 4 140mm PWM fans work with a powerful 3-chamber pump and a large 457 mm radiator to tame the hottest Intel and AMD processors — including AMD Threadripper — while staying remarkably quiet. Addressable RGB adds a
Attributes
Aoi Cooler Characteristics
- Supported CPU Sockets: Socket 1700, Socket 1151, Socket 1200, Socket AM5, Socket AM4, Socket 1851, Socket sTR5
Details
be quiet! Silent Loop 3 420mm ARGB — Black
420mm AIO Liquid3x Silent Wings 43-Chamber PumpARGB
The be quiet! Silent Loop 3 420mm (Black, part number BW026) is a premium 420mm all-in-one liquid CPU cooler engineered for maximum cooling with minimum noise. Three award-winning Silent Wings 4 140mm PWM fans work with a powerful 3-chamber pump and a large 457 mm radiator to tame the hottest Intel andAMD processors — includingAMD Threadripper — while staying remarkably quiet. Addressable RGB adds a subtle accent to be quiet!'s trademark clean, dark aesthetic. Typically in stock with fast delivery across Cyprus.
Compatibility & fit
Sockets supported: Intel LGA 1851/1700/1200/1150/1151/1155 andAMD AM5/AM4/TR5/TR4. The radiator is large at 457 x 140 x 27 mm (plus 25 mm fan thickness), so make sure your case is rated for a 420mm (3x140mm) radiator — this is bigger than a typical 360mm and needs a compatible chassis. ARGB uses a standard 3-pin 5V addressable connector; the pump and fans use 4-pin PWM.
Best For
✓High-end Intel LGA1851 and LGA1700 CPUs
✓AMD Ryzen AM5 / AM4 processors
✓AMD Threadripper TR4 / TR5 workstations
✓Silence-focused, high-performance builds
✓Large cases that support a 420mm radiator
✓Subtle ARGB with a clean dark aesthetic
Key Features
420mm Radiator + Silent Wings 4 Fans
A large 457 x 140 x 27 mm radiator with three Silent Wings 4 140mm PWM fans (up to 1900 RPM, 78.4 CFM, 2.36 mmH2O) delivers heavy-duty cooling with class-leading quietness.
Powerful 3-Chamber Pump
A 3-chamber pump with a 6-pole 3-phase motor (adjustable 1700-3500 RPM) provides strong, efficient coolant flow while keeping vibration and noise low.
Copper / Nickel Cold Plate
A nickel-plated copper cold plate with 1,800 mm2 of fin area maximises heat transfer from the CPU while resisting corrosion for long-term reliability.
Whisper-Quiet Operation
Noise measures just 19.4 dBA at 50%, 29.3 dBA at 75% and 34.3 dBA at full speed, true to be quiet!'s silence-first engineering.
Technical Specifications
| Identification | |
| Part Number | BW026 |
| EAN / GTIN | 4260052192559 |
| MPN | BW026 |
| Brand | be quiet! |
| Series | Silent Loop 3 420mm |
| Radiator & Cooling | |
| Cooler Type | 420mm All-in-One liquid cooler |
| Radiator Size | 457 x 140 x 27 mm |
| Radiator Material | Aluminium (black finish) |
| Cold Plate | Copper, nickel-plated (1,800 mm2 fins) |
| Tubing | 400 mm sleeved |
| Fans | |
| Fan Model | 3x Silent Wings 4 140mm PWM |
| Fan Speed | up to 1900 RPM (PWM) |
| Airflow | 78.4 CFM per fan |
| Static Pressure | 2.36 mmH2O per fan |
| Noise Level | 19.4 / 29.3 / 34.3 dBA (50/75/100%) |
| Pump & Lighting | |
| Pump Speed | 1700-3500 RPM (adjustable, PWM) |
| Pump Design | 3-chamber, 6-pole 3-phase motor |
| Display | None |
| Lighting | Addressable RGB (3-pin 5V) |
| Compatibility | |
| Intel Sockets | LGA 1851 / 1700 / 1200 / 1150 / 1151 / 1155 |
| AMD Sockets | AM5 / AM4 / TR5 / TR4 |
| General | |
| Colour | Black |
| Warranty | 1-Year Warranty (Singular) |
Frequently Asked Questions
Singular Expert Insight
The Silent Loop 3 420mm is be quiet!'s flagship AIO: a large 420mm radiator, premium Silent Wings 4 fans and a strong 3-chamber pump aimed at people who want top-tier cooling that you can barely hear. It skips an LCD in favour of subtle ARGB and pure performance, and its Threadripper support makes it a Genuine workstation option. Just be sure your case fits 420mm. Pair it with a dependable unit from our PC power supplies range, and compare it with other options in our CPU coolers category.
Buyer's Guide
Buy it if
You run a high-end or overclocked CPU (including Threadripper), have a 420mm-capable case, and want maximum cooling with minimum noise.
Skip it if
Your case only fits 240/280/360mm radiators, or you want an on-pump LCD display.
Also consider
A be quiet! Silent Loop 3 in 360mm for smaller cases, or an LCD-equipped 420mm AIO if you want a display.