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Black 240mm AIO liquid cooler with 1.54in LCD screen on pump block, two 120mm fans on aluminium radiator, nylon-braided tubes

NZXT

NZXT RL-KN240-B1 240mm liquid cooler with 1.54" LCD display

SKU CH-6QNK-NJPQ6 MPN RL-KN240-B1

A 240mm AIO liquid cooler with a 1.54" LCD display, two 120mm PWM fans running 500–1800 RPM, and broad Intel LGA 1150/1151/1155/1156/1200/1700/1851 plus AMD AM4/AM5/sTR4/sTRX4 socket support

  • TypeLiquid Cooling System
  • Block CompatibilityAMD Socket AM4 / AMD Socket AM5 / AMD Socket sTR4 / AMD Sock
  • Block Compatibility - AMDAMD Socket AM5, AM4, sTRX4*, TR4* (*Threadripper bracket not
  • Block Dim.74.7mm H: 55.97mm
  • Block MaterialCopper
  • Radiator Size123 x 275 x 30mm

Fan Size 2 Fan Slots (120mm)

  • Real-time system stats or custom images on a 1.54" LCD display
  • Quiet cooling from F120P static-pressure fans at 17.9–30.6 dBA
  • 7th-gen Asetek pump runs at 2800 RPM for strong heat dissipation
  • Single breakout cable and nylon-braided sleeves simplify installation
  • NZXT CAM software controls fan/pump speeds with 0 RPM mode at low temps

1.54" LCD CPU cooler

The NZXT Kraken 240 RL-KN240-B1 is an all-in-one liquid cooler with a 1.54" diameter LCD screen that shows custom images or live system data. It fits Intel LGA 1150, 1151, 1155, 1156, 1200, 1700 and 1851 sockets plus AMD AM4, AM5, sTR4 and sTRX4. Builders who need Threadripper support must source the separate bracket.

Sustained-load behaviour

Two 120 mm F120P static-pressure fans run from 500 to 1,800 ± 180 RPM delivering 21.67 to 78.02 CFM at 17.9 to 30.6 dBA. The seventh-generation Asetek pump spins at 2,800 RPM to circulate coolant through the 123 x 275 x 30 mm aluminium radiator. NZXT CAM software can halt fans completely at low temperatures for silent idle operation.

Pre-install checks

Verify your motherboard socket appears in the compatibility list above and that the case accepts a 275 mm radiator with 30 mm thickness. Confirm a 4-pin PWM header and an internal USB 2.0 header are free for the single breakout cable. The copper cold plate measures 74.7 x 55.97 mm; ensure no tall components obstruct it. Tubes use ultra-low evaporation rubber with nylon braided sleeves for durability.

Points forts

  • Real-time system stats or custom images on a 1.54" LCD display
  • Quiet cooling from F120P static-pressure fans at 17.9–30.6 dBA
  • 7th-gen Asetek pump runs at 2800 RPM for strong heat dissipation
  • Single breakout cable and nylon-braided sleeves simplify installation
  • NZXT CAM software controls fan/pump speeds with 0 RPM mode at low temps

Caractéristiques

BrandNZXT
ModelKraken 240
Part NumberRL-KN240-B1
TypeLiquid Cooling System
Block CompatibilityAMD Socket AM4 / AMD Socket AM5 / AMD Socket sTR4 / AMD Socket sTRX4 / Intel LGA 1150 / Intel LGA 1151 / Intel LGA 1155 / Intel LGA 1156 / Intel LGA 1200 / Intel LGA 1700 / Intel LGA 1851
Block Compatibility - AMDAMD Socket AM5, AM4, sTRX4*, TR4* (*Threadripper bracket not included)
Block Dim.74.7mm H: 55.97mm
Block MaterialCopper
Radiator Size123 x 275 x 30mm
Radiator MaterialAluminum
Fan Size2 Fan Slots (120 mm)
Fan Dim.120 x 120 x 26mm
Bearing TypeFluid Dynamic Bearing
Fan RPM500 - 1,800 ± 180 RPM
Fan Air Flow21.67 - 78.02 CFM
Fan Noise17.9 - 30.6dBA
Fan Connector4-pin PWM
ColorBlack
LED ColorNone
Tube MaterialUltra-low Evaporation Rubber with Nylon Braided Sleeve
FeaturesThe Kraken delivers chillingly cool performance, an easy install, and a display screen for system specs or custom images.
Poids d’expédition1.91 kg
Dimensions du colis327 × 244 × 141 mm

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Questions sur cet article

How loud are the two 120 mm F120P fans when the Kraken 240 runs at full speed all day?

The fans operate between 17.9 and 30.6 dBA across their 500 to 1,800 RPM range, so even at maximum load the noise stays at a low hum.

Which motherboard socket and power connectors must I already have to install this cooler?

You need a compatible Intel LGA 1150, 1151, 1155, 1156, 1200, 1700 or 1851 socket, or AMD AM4, AM5, sTR4 or sTRX4 (Threadripper bracket sold separately), plus a 4-pin PWM header for the fans and a USB 2.0 header for the LCD.

Will the 275 mm radiator and 74.7 mm pump block fit alongside my existing RAM and GPU in a standard mid-tower case?

The radiator measures 123 x 275 x 30 mm and the block is 74.7 mm tall, so verify your case supports a 240 mm top or front mount and check clearance for tall memory modules near the socket.

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