Cooler Master 240 Atmos White High Performance Close-Loop AIO Liquid Cooler, R9|i7 Dual Chamber Pump, Customize Cover, Sickleflow Edge PWM, aRGB Lighting, AMD Ryzen AM5|4, Intel LGA 1851|1700 Platform
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AI Verdict
This 240mm AIO with a dual-chamber pump and 27.2 dBA max fans delivers strong cooling for R9/i7 CPUs, offering extensive aRGB customization and simplified installation.
This 240mm AIO is a strong fit for users with high-end AMD R9 or Intel i7 CPUs, offering robust cooling performance and quiet operation with fan noise at 27.2 dBA max and pump noise at 25 dBA max. Its customizable aRGB and eco-friendly construction also appeal to builders prioritizing aesthetics and sustainability.
If you need even more thermal headroom for extreme overclocking or larger CPUs, consider a 360mm AIO with higher CFM fans and a larger radiator surface area.
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Pros
- The patented dual-chamber pump enhances water pressure and optimizes flow directly to the CPU hotspot for AMD R9 and Intel i7 processors.
- It offers strong cooling performance, outperforming other 240mm AIOs in tests and approaching the performance of some 360mm AIOs.
- The pre-installed SickleFlow Edge fans operate quietly, with a maximum noise level of 27.2 dBA, and the pump at 25 dBA.
- Installation is streamlined with pre-installed fans on the radiator and redesigned brackets for AM5 and LGA 1851|1700 platforms.
- The pump top cover is personalizable with 3D designs and features aRGB Gen 2 lighting for creative freedom.
- Cooler Master includes a tube of CryoFuze thermal paste, providing enough for multiple applications.
Cons
- The inclusion of an RGB controller adds to the product's cost, which may not be desired by users who prefer motherboard-only RGB control.
- Users may experience cable clutter due to the multiple PWM and aRGB connections, despite upgraded wiring sleeving.
- One user reported issues with the MasterCTRL software not detecting the 240 Atmos, causing RGB lighting to not function.
- An isolated user reported high stress test temperatures (89°C) on a 5700x3d, suspecting pump issues, though this could be an installation error.
Dimension Scores
The dual-chamber pump and fine-tuned microchannels provide strong cooling, outperforming other 240mm AIOs and handling high-end R9/i7 CPUs effectively.
The SickleFlow Edge fans have a maximum noise level of 27.2 dBA and the pump 25 dBA, which is considered quiet for an AIO with this level of performance.
It features aluminum, copper, and plastic construction, with a pump MTTF of over 210,000 hours and fan MTTF of over 160,000 hours, backed by a 5-year warranty.
While tube clips are included for organizing AIO tubes and ARGB/PWM cables, the presence of multiple RGB fan and pump connections can still lead to cable clutter.
Best For
- Gaming PCs with high-performance AMD R9 or Intel i7 CPUs that require efficient cooling.
- Custom PC builds where aesthetic customization and aRGB lighting are key priorities.
- Users seeking a relatively straightforward installation process on modern Intel and AMD platforms.
- Environmentally conscious builders, given its use of recycled materials and reduced packaging.
Not Recommended For
- Budget-focused builds where cooling performance is secondary to cost savings.
- Small form factor cases that cannot accommodate a 240mm radiator (277 x 119.6 x 27.2 mm).
- Users who prefer a completely silent system, as fans can reach 27.2 dBA and the pump 25 dBA at maximum operation.
Watch Out For
- The included RGB controller can increase the price, and users who don't need it might feel they're paying for an unnecessary accessory.
- Expect a 'mess of wires' from the RGB fans and AIO, despite improved sleeving, requiring careful cable management.
- There's a reported issue where the MasterCTRL software might not detect the 240 Atmos, leading to non-functional RGB lighting.
- One user experienced high CPU temperatures (89°C) during stress testing, potentially indicating a pump issue or improper thermal paste application.
Full Specifications
| UPC | 884102112287 |
| ASIN | B0CZ5Q7PRM |
| Brand | Cooler Master |
| Voltage | 12 Volts |
| Wattage | 4 watts |
| Material | Aluminum, Copper, Plastic |
| Item Weight | 3.19 pounds |
| Noise Level | 25 Decibels |
| Manufacturer | Cooler Master |
| Cooling Method | Fan, Water |
| Number of Items | 1 |
| Item model number | MLX-D24M-A25PZ-RW |
| Compatible Devices | Desktop |
| Product Dimensions | 1.07 x 10.91 x 4.71 inches |
| Power Connector Type | 3-Pin |
| Maximum Rotational Speed | 2500 RPM |
What Buyers Say
This AIO is a surprisingly strong performer for a 240mm unit, often outcooling its direct competitors and even some larger 360mm models. Users will appreciate the premium unboxing experience, with everything neatly organized and fans pre-installed, making setup less of a headache. However, be prepared for a bit of a cable jungle from all the RGB connections, and there's a chance the MasterCTRL software might act up, leaving your lighting in the dark.
“Dude, this 240mm AIO actually keeps my i9-13900K chill even when I'm pushing it, and the RGB looks sick, but seriously, the cables are a nightmare to hide! My MasterCTRL software glitched out once too, so I just plugged it into the motherboard.”
Common Praise
- The cooling performance is top-tier for a 240mm AIO, keeping high-end CPUs cool.
- The fans and pump operate at quiet noise levels, even under load.
- The unboxing experience is premium, with well-organized components and pre-installed fans simplifying setup.
- The pump design and aRGB lighting offer a visually appealing and customizable aesthetic.
- Installation is generally easy, especially for Intel LGA 1700 systems.
- The inclusion of CryoFuze thermal paste for multiple applications is a thoughtful addition.
Common Complaints
- The numerous RGB and PWM cables can create significant cable clutter inside the PC case.
- The included RGB controller might be an unnecessary cost for users who prefer motherboard-based RGB control.
- Some users have reported issues with the MasterCTRL software failing to detect the AIO, leading to non-functional RGB.
- An isolated report mentioned high CPU temperatures during stress tests, potentially indicating a pump or mounting issue.
Ownership Tips
- The pre-applied thermal paste guide on the cold plate needs to be removed before installation.
- The RGB controller can be bypassed by connecting the lighting directly to the motherboard's aRGB header.
- The pump and fan cables can be daisy-chained or connected to a splitter for fewer motherboard headers.
- The pump block is more compact than many other AIOs, even with the translucent cap, which helps with case compatibility.
Frequently Asked Questions
What CPU sockets is the Cooler Master 240 Atmos compatible with?
It supports Intel LGA 1851, 1700, 1200, 1151, 1150, 1155, 1156 sockets and AMD AM5, AM4 sockets.
How loud are the fans and pump on this AIO?
The SickleFlow Edge fans have a maximum noise level of 27.2 dBA, and the pump operates at a maximum of 25 dBA.
Can I customize the RGB lighting?
Yes, the pump top cover is personalizable with your own 3D designs, and you have full control over the aRGB Gen 2 lighting.
Is thermal paste included with the cooler?
Yes, Cooler Master includes a tube of CryoFuze thermal paste, which is sufficient for multiple applications.
What is the warranty period for the Cooler Master 240 Atmos?
The product comes with a 5-year warranty.
Are the fans pre-installed on the radiator?
Yes, the SickleFlow Edge fans come pre-installed on the radiator, which helps to simplify the installation process.
Buying Guide
When you're looking at an AIO liquid cooler like this, you're essentially getting a self-contained cooling system that uses liquid to transfer heat away from your CPU more efficiently than air coolers. Pay attention to the radiator size (this is a 240mm, meaning two 120mm fans) and compatibility with your CPU socket and case. The fan and pump noise levels are also crucial if you want a quiet build.
Dual Chamber Pump
SickleFlow Edge PWM Fans
aRGB Lighting
Radiator Dimensions (277 x 119.6 x 27.2 mm)
Alternatives
If this 240mm AIO doesn't fit your needs, look for 360mm or 420mm radiators for increased cooling capacity, or consider air coolers for simpler installation and potentially lower cost if extreme performance isn't a priority.
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