be quiet! PURE LOOP 3 LX AIO Liquid Cooler

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

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.