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White 240 mm radiator with two 120 mm ARGB fans and a square pump block showing an infinity mirror top

Cooler Master

Cooler Master MasterLiquid ML240R RGB 240mm liquid cooler White

SKU CH-5W7B-TRNDJ

A 240 mm all-in-one liquid cooler with dual 120 mm ARGB PWM fans, a 3100 RPM dual-chamber pump and 400 mm tubing for AMD AM5/AM4 and Intel LGA 1851/1700 sockets

  • Radiator size240 mm
  • Fan size2 Fan Slots (120 mm)
  • Pump rotation speed3100 ± 300 RPM
  • Pump dimensions83 × 76.2 × 52.3 mm / 3.3 × 3 × 2.1 in
  • Pump bearingSleeve Sleeve Bearings
  • Pump noise level25 dBA
  • Infinity mirror pump cover adds distinctive ARGB lighting
  • Dual-chamber pump design runs at 25 dBA for quiet operation
  • 400 mm tubing length allows flexible mounting in any case
  • 120 mm fans deliver 70.7 CFM airflow at 30 dBA
  • Supports AMD AM5/AM4 and Intel LGA 1851/1700 sockets

240 mm AIO liquid cooler

The Cooler Master MasterLiquid ML240R RGB is a 240 mm all-in-one liquid cooler designed for mainstream CPU sockets. It targets builders who want quiet liquid cooling with addressable RGB lighting in a white finish. The unit fits AMD AM4, AM5 and Intel LGA 1700 and 1851 platforms. It arrives pre-filled and ready for straightforward installation.

Upgrade from stock air coolers

This cooler replaces basic boxed air coolers or entry-level 120 mm AIOs when lower noise and better thermal headroom matter. The jump is worth it if your current cooler hits high fan speeds under sustained loads. The dual-chamber pump runs at 3100 RPM with a 25 dBA rating, while the two 120 mm fans operate between 650 and 1750 RPM at up to 30 dBA. Included Cryo-Fuze paste simplifies the swap.

240 mm radiator capacity

The 240 mm aluminium radiator and dual 120 mm fans move up to 120 m³/h of airflow for typical mid-range CPU workloads. It comfortably handles gaming and productivity sessions without thermal throttling. Headroom decreases with heavily overclocked high-core-count processors that exceed the radiator dissipation area. The 400 mm tubing length allows flexible routing in most standard chassis layouts.

How it compares

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

Price $84.99
Pricier than about 56% of the 1,190 comparable items (median $71.99).
Radiator size 240 mm
Lower than about 80% of the 165 comparable items (median 360 mm).

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Specifications

Product
Product lineMasterLiquid ML240R RGB
Product typeAIO
Product colorWhite
Performance
Pump rotation speed3100 ± 300 RPM
Fan speed650-1,750 RPM ± 10%
Fan airflow120m³/h (70.7CFM)
Ports & slots
Fan plug type7-Pin PWM + ARGB
Size & build
Radiator size240 mm
Fan size2 Fan Slots (120 mm)
Pump dimensions83 × 76.2 × 52.3 mm / 3.3 × 3 × 2.1 in
Radiator materialAluminum
Fan dimensions120 × 120 × 25 mm / 4.7 × 4.7 × 1.0 in
Bearing designSleeve Bearings
Environment & compliance
Pump noise level25 dBA
Fan noise level30 dBA
More details
Pump bearingSleeve
Sleeve Bearings
LED lightingARGB

Questions about this item

How much space does the 240 mm radiator and its two 120 mm fans need inside the case?

The radiator is 240 mm long and each fan measures 120 x 120 x 25 mm, so you need room for a 240 mm radiator plus 25 mm fan thickness on the mounting side.

Which way should the ARGB pump cover face during installation, and what step is often missed?

Orient the infinity mirror pump cover so the logo is upright, then connect the 7-pin PWM+ARGB cable to the motherboard header; the step often missed is plugging in the ARGB lead for lighting control.

When should the included Cryo-Fuze thermal paste be reapplied?

Reapply the supplied Cryo-Fuze paste whenever you remove the pump from the CPU, typically every two to three years or if temperatures rise noticeably.

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