Catalogue

Be quiet! Pure Loop 3 LX 240mm

5 1 rating
Water Cooling - complete closed set, for socket AM4 and AM5, 1150, 1151, 1155, 1200, 1700 and 1851, 2×120mm fan(s), max noise level of 35,2dB, max speed of 2100 RPM, RGB backlighting, dimensions (WxDxH): 277 x 120 x 27mm
  75.90 €
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Be quiet! Pure Loop 3 LX 240mm

The Be quiet! Pure Loop 3 LX 240mm liquid cooler efficiently dissipates heat from your processor, maintaining a low operating temperature even under heavy loads. This all-in-one liquid cooling solution combines a 240mm aluminium radiator with two Light Wings LX fans and a high-performance pump. The design ensures quiet operation and high cooling performance, which are key features of Be quiet! CPU coolers. The system supports modern Intel and AMD sockets, including AM4, AM5, 1700, and 1851. The closed loop with flexible 400mm tubes makes installation easy in most PC cases. The Pure Loop 3 LX is an ideal solution for users who demand reliable heat dissipation with low noise levels, while also appreciating the ability to visually customise their build with ARGB lighting.

Be quiet! Pure Loop 3 LX 240mm liquid cooler

Key features of the Be quiet! Pure Loop 3 LX 240mm liquid cooler

  • Pump block with dynamic ARGB lighting and 10 interchangeable foils
  • Two Light Wings LX PWM fans with daisy-chain support
  • Pump with a 6-pole motor to minimise vibrations and noise
  • Easy-access port for refilling the coolant
  • High-performance cooling for all processors
  • High-speed fans
  • Sufficiently long 400mm tubes
Be quiet! Pure Loop 3 LX 240mm liquid cooler

Lighting and Light Wings LX fans

The liquid cooler's block features ARGB lighting, which you can customise with ten included foils for a unique visual style. It includes two Light Wings LX PWM fans, which offer 16 individually addressable LEDs for smooth lighting transitions. Nine blades with an optimised geometry for high static pressure effectively reduce turbulence and increase airflow through the radiator's dense fins, boosting cooling efficiency.

Be quiet! Pure Loop 3 LX 240mm liquid cooler

Wiring and cable management

The fan system supports daisy-chaining. This solution significantly simplifies installation by linking both the power and ARGB signals of both fans into a single bundle. Connecting the fans in a single chain eliminates the need for a separate ARGB/PWM hub and frees up connectors on the motherboard. The result is cleaner cable management inside the case and better airflow, unhindered by excess cables.

Be quiet! Pure Loop 3 LX 240mm liquid cooler

Cooling performance and quiet pump

The Pure Loop 3 LX 240mm provides high cooling performance that can handle even thermally demanding processors under full load. The pump features a modern 6-pole motor, the design of which effectively reduces vibrations and operating noise. PWM control of the pump speed, ranging from 3000 to 5500RPM, allows you to dynamically adjust its operation to the current system load. Under light loads, the pump runs quietly, while at high performance it prioritises a high coolant flow rate.

Be quiet! Pure Loop 3 LX 240mm liquid cooler

Maintenance and quality control

To maintain optimal performance in the long term, the cooler is equipped with an easily accessible refill port. This allows for simple topping-up of the cooling liquid, which extends the lifespan of the entire system. Designed and quality-controlled in Germany, this product meets strict standards for workmanship and reliability.

Radiator size:
240mm

Compatible Intel sockets:
1150, 1151, 1155, 1200, 1700, 1851

Compatible AMD sockets:
AM4, AM5

Fan speed range:
2100RPM

Pump speed range:
3000–5500RPM

Tube length:
400mm

Fan bearing type:
Rifle Bearing (RB) 

Number of fans:
2

Specifications

Compare
Backlight colour
RGB
Maximum speed
2,100 RPM
Maximum loudness
35.2 dB
Airflow
59.6 CFM (101.26 m3/h)
Speeds control
Automatic speed control

Backlight

Backlight colour
RGB

Fan speed

Maximum speed
2,100 RPM
Maximum loudness
35.2 dB
Airflow
59.6 CFM (101.26 m3/h)
Speeds control
Automatic speed control
Operating voltage
12 V

Socket

AMD socket
AM4, AM5
Intel socket
1150, 1151, 1155, 1200, 1700, 1851

Radiator dimensions

Radiator width
277 mm (27.7 cm)
Radiator depth
120 mm (12 cm)
Radiator height
27 mm (2.7 cm)
Hose length
400 mm
Compatible radiator size
240mm

Pump dimensions

Pump width
93.4 mm (9.34 cm)
Pump depth
68.5 mm (6.85 cm)
Pump height
44.9 mm (4.49 cm)

Pump speed

Max. pump speed
5,500 RPM (5,500 rev/min)
Min. pump speed
3,000 RPM (3,000 rev/min)

Packaging

Set
Complete closed set
More Specifications

Listan GmbH, Wilhelm-Bergner-Str. 11, 21509 Glinde, Germany [email protected]

Note:

This product is not an independently functional unit and may require professional installation.

Specifications can be changed without notice. Images are for illustrative purposes only.

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