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Black 240mm AIO liquid cooler with rectangular IPS display on pump block, two 120mm ARGB fans, black aluminium radiator, sleeved tubes

be quiet!

be quiet! Light Loop IO LCD BW034 240mm liquid cooler

SKU CH-RX6B-X3VHT MPN BW034

A 240 mm all-in-one liquid CPU cooler with an IPS display, ARGB lighting and daisy-chained 120 mm fans for Intel and AMD sockets

  • Radiator size277 mm
  • Fan size2 Fan Slots (120 mm)
  • Compatible socketsIntel 1851 / 1700 / 1200 / 1151 / 1150 / 1155, AMD AM5 / AM4
  • AMD socket supportAM5 /AM4
  • Intel socket support1851 /1700 /1200 /1151 /1150 /1155
  • Cooling block materialCopper & Nickel Plating

Model Light Loop IO LCD 240mm Black

  • IPS display shows system data, videos and images with extensive customisation
  • ARGB lighting controlled through IO Center software with vivid presets
  • High cooling performance and whisper-quiet operation for overclocked CPUs
  • Two daisy-chained Light Wings LX PWM fans with funnel-shaped outlets
  • Copper cold plate with nickel plating and specially designed jet plate

240 mm AIO with IPS display

The be quiet! Light Loop IO LCD BW034 is a 240 mm all-in-one liquid CPU cooler that integrates an IPS display on the pump block. It targets enthusiasts who want real-time system monitoring, custom images or video playback alongside high cooling capacity for overclocked processors. ARGB lighting on the block and fans adds visual flexibility for showcase builds.

Check socket clearance and proprietary fan wiring

Verify that your motherboard uses one of the listed Intel sockets — 1851, 1700, 1200, 1151, 1150, 1155 — or AMD AM5 or AM4 before ordering. The radiator measures 277 mm in length, so confirm your case can accommodate that dimension. The two 120 mm Light Wings LX fans connect via a proprietary daisy-chain connector and require the included IO Controller for power and PWM control.

IO Controller and software unlock display

The bundled IO Controller links the pump, display and daisy-chained fans to a single USB header for management through the IO Center application on Windows. This software enables custom IPS content, ARGB preset selection and per-fan curve adjustment without additional hardware. Flexible sleeved tubing and a pre-applied mounting kit simplify installation, while the nickel-plated copper cold plate and specialised jet plate optimise thermal transfer.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $171.99
Pricier than about 85% of the 1,190 comparable items (median $71.99).
Radiator size 277 mm
Lower than about 70% of the 165 comparable items (median 360 mm).

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Specifications

Product
Brand namebe quiet!
Product lineLight Loop IO LCD
Model nameBW034
Product typeAIO
Product colorBlack
Ports & slots
Fan plug typeProprietary
Size & build
Radiator size277 mm
Fan size2 Fan Slots (120 mm)
Cooling block materialCopper & Nickel Plating
Radiator materialAluminum
Shipping weight2.13 kg
Package size320 × 203 × 140 mm
Compatibility
Compatible socketsIntel 1851 / 1700 / 1200 / 1151 / 1150 / 1155, AMD AM5 / AM4
AMD socket supportAM5 /AM4
Intel socket support1851 /1700 /1200 /1151 /1150 /1155
More details
LED lightingARGB
Team affiliationNO

Other versions of this model

3 more in the same range

Questions about this item

What comes in the box and what must be purchased separately?

The package includes the 240 mm radiator, two daisy-chained 120 mm Light Wings LX PWM fans, the pump block with copper and nickel-plated cold plate, an IO Controller for software control, and mounting hardware for Intel 1851, 1700, 1200, 1151, 1150, 1155 and AMD AM5, AM4 sockets. No extra parts are required for installation.

Which version or capacity should I choose for my build?

This model is offered in a single 240 mm size with a 277 mm radiator length and black finish. Select it when your case supports a 240 mm radiator and you want the integrated IPS display and ARGB lighting; larger or smaller radiator options are not available for this series.

What does the 240 mm rating mean once the cooler is installed in a real system?

The 240 mm designation indicates the cooler uses two 120 mm fans on a 277 mm long radiator, providing a surface area suited for high heat loads from overclocked CPUs on supported Intel and AMD platforms while the progressive IC pump and funnel-shaped fan outlets keep noise low.

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