This article covers Cooler Master 240 Atmos ARGB クローズループ AIO 液体クーラー.

Overview

The Cooler Master MasterLiquid 240 Atmos ARGB is a 240mm all-in-one liquid CPU cooler featuring a next-generation dual-chamber pump and a customizable pump top cover. Its patented dual-chamber design optimizes coolant flow to directly target CPU hotspots, delivering superior cooling efficiency. Pre-installed Sickleflow Edge 120mm PWM fans strike an excellent balance between noise and performance, achieving up to 2500 RPM, 70.7 CFM airflow, and a mere 25 dBA noise level. Compatible with AMD Ryzen AM5/AM4 and Intel LGA 1851/1700/1200 sockets, it covers virtually all modern desktop platforms. The pump top cover can be swapped with your own 3D-printed design, and fully addressable Gen2 RGB lighting offers extensive customization through Cooler Master's MasterCTRL software.

Connectivity & Compatibility

Supported sockets: AMD AM5/AM4, Intel LGA 1851/1700/1200. The 240mm radiator fits most ATX and Micro-ATX cases with standard 240mm mounting points. The pump connects via a 3-pin power connector; fans use 4-pin PWM headers. ARGB control requires a 5V 3-pin ARGB header on the motherboard, and is also compatible with MasterCTRL software for system-wide lighting synchronization.

Product Info

Released in late 2023, the MasterLiquid 240 Atmos ARGB is priced around ¥25,000 on Japan, positioning it in the mid-range segment for 240mm AIO coolers. The package includes Intel and AMD mounting brackets, thermal paste, mounting screws, and a quick-start guide. Warranty is standard 2 years (region-dependent). Its key differentiators are the customizable pump cap and the dual-chamber pump design that offers performance above typical mid-range coolers.

Best Use Cases

Gamers seeking quiet, high-performance cooling: The Sickleflow Edge fans and 25 dBA noise level keep your system silent during intense gaming sessions. Enthusiasts who value aesthetics: Swap the pump cap for a custom 3D-printed design and take full control of ARGB lighting to match your build's theme. * Users planning future CPU upgrades: Broad socket support (AM5/AM4/LGA1851/1700/1200) allows you to carry the cooler over to a new motherboard or CPU platform.