be quiet! PURE LOOP 3 LX AIO Liquid Cooler
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About This Item
- All-in-one liquid cooler for processors
- Compatible with LGA 1851, 1700, 1200, 1151, 1155, 1150 and AM4, AM5 sockets
- Supports AMD Ryzen 9000 Series and Intel Core i9 processors
- Three 120 mm fans with 9 blades each for enhanced cooling
- Maximum airflow of 61.8 cfm and air pressure of 2.51 mmH2O
- PWM support for precise fan speed control
- Multi-colour LED illumination for customisable aesthetics
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be quiet! PURE LOOP 3 LX | Premium All-in-One CPU Cooling
The be quiet! PURE LOOP 3 LX Processor All-in-one liquid cooler 12 cm Black 1 pc(s) delivers efficient, quiet cooling for high-performance CPUs. Designed for enthusiasts and professionals alike, this 360mm radiator unit combines powerful thermal management with near-silent operation, making it ideal for AMD Ryzen 9000 Series and Intel Core i9 processors.
With three 120mm fans delivering 105.1 m³/h airflow and a copper base plate for optimal heat transfer, the PURE LOOP 3 LX maintains excellent thermal performance while keeping noise levels between 17.3 dB (low) and 36.9 dB (high). The multi-colour LED illumination adds a premium aesthetic touch to any build.
Key Specifications
| Metric | Spec. |
|---|---|
| Fan Diameter | 12 cm |
| Airflow | 105.1 m³/h |
| Maximum Air Pressure | 2.51 mmH₂O |
| Supported Sockets | LGA 1851, 1700, 1200, 1151, 1155, 1150, AM4, AM5 |
| Noise Level | 17.3-36.9 dB |
Superior Cooling Performance for Demanding Systems
The be quiet! PURE LOOP 3 LX features a 360mm aluminum radiator paired with three high-quality 120mm fans, creating exceptional heat dissipation capacity. The copper base plate ensures efficient thermal transfer from your CPU to the coolant, while the 40cm tubing provides flexible installation options. With a pump motor speed ranging from 3000-5500 RPM, this cooler maintains optimal coolant circulation even under heavy loads.
Whisper-Quiet Operation Technology
Engineered for silent computing environments, the PURE LOOP 3 LX operates at remarkably low noise levels. The PWM-controlled fans automatically adjust their speed based on thermal load, ensuring that your system remains quiet during light tasks while ramping up cooling performance when needed. At low speeds, the unit produces just 17.3 dB of noise—quieter than a whisper—making it perfect for recording studios, home offices, or late-night gaming sessions.
Broad Compatibility Across Modern Platforms
This all-in-one liquid cooler supports an extensive range of processor sockets, including the latest LGA 1851 and AM5 platforms. Whether you’re running an AMD Ryzen 9000 Series processor or an Intel Core i9, the PURE LOOP 3 LX provides a secure mounting solution. The included mounting kit simplifies installation across different platforms, while the compact 52mm height ensures compatibility with most PC cases.
Intelligent Daisy Chain Fan Control
The daisy chain capability allows you to connect multiple fans using a single cable, significantly reducing cable clutter inside your case. This feature not only improves airflow management but also simplifies your build’s appearance. Combined with PWM support, the system intelligently controls fan speeds across all connected units, optimising both cooling performance and noise levels based on real-time thermal conditions.
Box Contents
- be quiet! PURE LOOP 3 LX liquid cooler
- Mounting kit for supported sockets
- Thermal grease
- User manual
- 3x 120mm fans with integrated LEDs
Check Before You Buy
- Confirm your CPU socket compatibility with the supported list
- Verify your case has adequate space for a 360mm radiator
- Check clearance for the 52mm height above the CPU
- Ensure your motherboard has available 4-pin fan headers
Frequently Asked Questions
Q: What CPU sockets are supported by this cooler?
A: LGA 1851, 1700, 1200, 1151, 1155, 1150, AM4, and AM5 sockets.
Q: How many fans come with the PURE LOOP 3 LX?
A: Three 120mm fans are included with the 360mm radiator.
Q: Is this cooler suitable for overclocking?
A: Yes, with 105.1 m³/h airflow and copper base plate, it handles high thermal loads effectively.
Q: What are the noise levels at different speeds?
A: Between 17.3 dB at low speed and 36.9 dB at high speed.
Q: Does it include thermal paste?
A: Yes, thermal grease is included in the package.
The Consultant’s Verdict & Warranty
The be quiet! PURE LOOP 3 LX Processor All-in-one liquid cooler 12 cm Black 1 pc(s) represents an excellent balance of performance, aesthetics, and quiet operation for serious PC builders. Its comprehensive socket support, whisper-quiet operation, and premium build quality make it particularly suitable for content creators, professionals, and enthusiasts who demand both cooling efficiency and system silence. Covered by the standard Manufacturer Warranty.
| Performance | |
|---|---|
| Suitable location | Processor |
| Pulse-width modulation (PWM) support | Yes |
| Noise level (low speed) | 17.3 dB |
| Noise level (high speed) | 36.9 dB |
| Type | All-in-one liquid cooler |
| Fan diameter | 12 cm |
| Supported processor sockets | LGA 1851, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, Socket AM4, Socket AM5 |
| Compatible processor series | AMD Ryzen 9000 Series, Intel® Core™ i9 |
| Maximum airflow | 61.8 cfm |
| Maximum air pressure | 2.51 mmH2O |
| Airflow | 105.1 m³/h |
| Number of fans | 3 fan(s) |
| Quantity per pack | 1 pc(s) |
| Number of fan blades | 9 |
| Pump connector | 4-pin |
| Pump motor speed (min) | 3000 RPM |
| Pump motor speed (max) | 5500 RPM |
| Pump motor speed | 5500 RPM |
| Fan speed (max) | 2100 RPM |
| Fan's mean time to failure (MTTF) | 60000 h |
| Design | |
| Number of fans | 3 fan(s) |
| Illumination colour | Multi |
| Product colour | Black |
| Illumination LED | Yes |
| Number of fan blades | 9 |
| Radiator material | Aluminum |
| Base plate material | Copper |
| Daisy chain | Yes |
| Technical details | |
| Noise level (low speed) | 17.3 dB |
| Noise level (high speed) | 36.9 dB |
| Type | All-in-one liquid cooler |
| Fan diameter | 12 cm |
| Supported processor sockets | LGA 1851, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, Socket AM4, Socket AM5 |
| Compatible processor series | AMD Ryzen 9000 Series, Intel® Core™ i9 |
| Maximum airflow | 61.8 cfm |
| Maximum air pressure | 2.51 mmH2O |
| Airflow | 105.1 m³/h |
| Number of fans | 3 fan(s) |
| Illumination LED | Yes |
| Sustainability certificates | Triman |
| Doesn't contain | Cadmium, Lead, Mercury |
| Warranty period | 3 year(s) |
| Compliance certificates | CE, Federal Communications Commission (FCC), RoHS, UKCA |
| Ports & interfaces | |
| Pump connector | 4-pin |
| Power | |
| Fan power consumption | 5.4 W |
| Fan voltage | 12 V |
| Fan current | 0.17 A |
| Colour | |
| Product colour | Black |
| Weight & dimensions | |
| Fan dimensions (W x D x H) | 120 x 120 x 25 mm |
| Package depth | 321 mm |
| Package width | 240 mm |
| Package height | 140 mm |
| Package weight | 1.75 kg |
| Height | 52 mm |
| Weight | 1.28 kg |
| Radiator width | 12 cm |
| Radiator depth | 39.7 cm |
| Radiator height | 2.7 cm |
| Tube length | 40 cm |
| Waterblock width | 9.34 cm |
| Waterblock depth | 6.85 cm |
| Waterblock height | 4.87 cm |
| Packaging data | |
| Package depth | 321 mm |
| Package width | 240 mm |
| Package height | 140 mm |
| Package weight | 1.75 kg |
| Package type | Box |
| Certificates | |
| Waste Electrical and Electronic Equipment (WEEE) compliance | Yes |
| Indication | |
| Illumination colour | Multi |
| Certification | |
| Waste Electrical and Electronic Equipment (WEEE) compliance | Yes |
| Packaging content | |
| Package type | Box |
| Mounting kit | Yes |
| Thermal grease | Yes |
| Manual | Yes |
| Other features | |
| Pump connector | 4-pin |
| Thermal grease | Yes |
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