be quiet! Pure Loop 3 280mm AIO Liquid CPU Cooler - BW028
be quiet!
be quiet! Pure Loop 3 280mm AIO Liquid CPU Cooler - BW028
The be quiet! Pure Loop 3 280mm is a high-performance all-in-one liquid CPU cooler designed for users running overclocked systems who want effective cooling with minimal noise. It combines a powerful PWM pump with two 140mm fans and flexible tubing for straightforward installation and maintenance. The cooler fits Intel and AMD sockets without requiring RGB lighting or additional software.
Why this product
6-pole pump motor runs whisper-quiet
A dedicated 3-phase motor design reduces vibration and keeps pump noise constant across the full 3000–5500 rpm adjustment range, even under sustained load.
Fans stay quiet at full speed
The two 140mm Pure Wings 3 fans reach just 36.6 dB(A) at maximum rpm—quieter than a typical office environment—while delivering high static pressure for radiator cooling.
Easy refill port and flexible tubes
Quick-access refill port and bendable sleeved tubing simplify installation and any future maintenance without requiring disassembly of the system.
Daisy-chain fan connectors
All fans can be wired in series to a single motherboard header, eliminating the need to split cooling fan loads across multiple connectors.
Broad socket coverage
Works with Intel LGA1851, 1700, 1200, 1151, 1150, 1155 and AMD AM5, AM4 without adapter kits or separate brackets.
- Radiator size280mm (140 × 317 mm)
- Fans included2 × Pure Wings 3 140mm PWM
- Noise level at full speed36.6 dB(A)
- Tube length400 mm
- Pump range3000–5500 rpm (adjustable)
- Warranty3 years
- SKUBEQ-866
- EAN4260052193174
- Intel LGA1851, 1700, 1200, 1151, 1150, 1155 and AMD AM5, AM4 sockets.
- 280mm radiator fits standard top or front case mounts that accommodate a 317 × 140 mm footprint.
- Requires a motherboard header for pump (4-pin PWM) and at least one fan header; daisy-chaining the fans reduces header demand to one shared fan connection.
- No RGB lighting connector—the cooler has no integrated LEDs or addressable lighting support.
Best for
- Overclocked and high-performance builds
- Quiet-first system builders
- Cable-constrained cases with limited fan headers
- Builders who prefer minimal RGB and clean aesthetics
Trade-offs
- RGB and lighting enthusiasts. It has no lighting connector or decorative elements.
- Extremely tight case clearances. The 52 mm depth (with fans) and 317 mm radiator length must fit available mounting space.
- Users seeking software-based fan control. Pump and fan speeds are PWM-hardware controlled via motherboard BIOS; no proprietary software suite is included.
Pure Loop 3 280mm is the impressively high-performing and silent All-in-One water cooling unit for users with overclocked systems.
Pure Loop 3 280mm is for all the purists out there that like their cooling power subtle and unagitated.
VERY HIGH COOLING PERFORMANCE
With Pure Loop 3 280mm even the most demanding applications can be used reliably. An immense cooling power provides low temperatures even during periods of peak CPU performance.
SUPERIOR PUMP DESIGN
A powerful PWM pump ensures the very high-performance of Pure Loop 3 280mm and is whisper-quiet at the same time. The 6-pole 3-phase motor provides a smooth and consequently silent operation, whether at high or low rpm.
PURE WINGS 3 FANS
2 Pure Wings 3 140mm PWM high-speed fans provide high air pressure to efficiently cool the liquid of the Pure Loop 3 280mm radiator. The fans also come with a “closed loop motor” function. This feature always keeps a steady fan speed, no matter the resistance – ideal for radiators. Despite their performance, Pure Wings 3 offer very quiet operation. Even at maximum speed, the fans operate at only 36,6dB(A).
DAISY CHAIN
If you want to connect more fans than your system has headers for, you are in for a problem. A water cooling system with a pump and 2 fans on top of the case fans can hit the maximum available on a motherboard easily. The daisy chain function of Pure Loop 3 280mm allows all fans to be connected in series. We provide fewer and shorter cables to help you achieve a cleaner look.
EASY AND INTUITIVE HANDLING
Who says water coolers are harder to maintain? We most certainly do not! Pure Loop 3 280mm features flexible tubes, so installing it becomes a breeze. The refill port is easily accessible, making refilling this AiO an easy task, if and when it is required.
UNDISPUTED ELEGANCE
Pure Loop 3 280mm is the perfect choice for all purists that do not want to bother with lighting effects in their systems. However, this AiO shines even without lighting: the cooling block features an unmistakable design that gives Pure Loop 3 280mm a premium touch. A clear visual upgrade for any system.
General
| Brand | be quiet! |
|---|---|
| Model | Pure Loop 3 | 280mm |
Fan
| Number of fans | 2 |
|---|---|
| Fan type | Pure Wings 3 140mm PWM high-speed |
| Connector | 4-pin PWM (daisy-chainable) |
Performance
| Radiator material | Aluminum |
|---|---|
| Base material | Copper |
| Radiator dimensions (L × W × H) | 317 × 140 × 27 mm |
| Cooling block dimensions (H × W × D) | 68.5 × 93.4 × 44.9 mm |
| Radiator depth with fans | 52 mm |
| Tube length | 400 mm |
| Pump speed | 5500 rpm (nominal) |
| Pump adjustable range | 3000–5500 rpm |
| Pump connector | 4-pin PWM |
Acoustics & power
| Noise level at 50% fan speed | 16.5 dB(A) |
|---|---|
| Noise level at 75% fan speed | 28.5 dB(A) |
| Noise level at 100% fan speed | 36.6 dB(A) |
| Refill port | Yes |
| Lighting connector | No |
Compatibility
| Intel socket compatibility | LGA1851, 1700, 1200, 1151, 1150, 1155 |
|---|---|
| AMD socket compatibility | AM5, AM4 |
Warranty
| Warranty | 3 years |
|---|
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.