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Cooler Master

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

  • Based on 225 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Mar 12
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Style: 240 Atmos White


Features

  • Cool for R9|i7: Patented Next Gen Dual Chamber enhances water pressure and optimizes flow directly to the CPU hotspot, for AMD R9 and Intel i7.
  • Personalizable Top Cover: Customize the pump top cover with your own 3D designs, giving you creative freedom over the aRGB Gen 2 lighting.
  • Fine Tuned Performance: Precision-engineered ultra-thin spade fins optimize microchannels for targeted heat dissipation.
  • Sickleflow 120 Edge: Pre-installed SickleFlow Edge fans deliver premium airflow with optimized PWM blades, while simplifying the installation.
  • Simplify Brackets: Redesigned brackets simplify installation on AM5 and LGA 1851|1700 platforms.
  • Going Green Construction: Leading the Going Green initiative, 35% of the cooler's metal is recyclable, the pump top cover is made from recycled plastic, and packaging is reduced by 30%.

Description

Introducing the MasterLiquid 240 Atmos, the epitome of next-generation AIO liquid cooling innovation. Atmos redefines your AIO cooler expectations with its visionary design and unrivaled features. Experience whisper-quiet operation, courtesy of our SickleFlow Edge fans. Seamlessly transition from unboxing to mastering your system with our user-friendly MasterCTRL software. Customize the pump top cover with your unique 3D-printed designs, showcasing our commitment to sustainability. Our refined dual chamber pump design, coupled with eco-friendly construction, sets a new standard in AIO liquid cooling. The Atmos: where cutting-edge technology meets a full 240 degrees of cooling excellence.

Brand: Cooler Master


Power Connector Type: 3-Pin


Voltage: 12 Volts


Wattage: 4 watts


Cooling Method: Fan, Water


Compatible Devices: Desktop


Noise Level: 25 Decibels


Material: Aluminum, Copper, Plastic


Maximum Rotational Speed: 2500 RPM


UPC:


Brand: ‎Cooler Master


Power Connector Type: ‎3-Pin


Voltage: ‎12 Volts


Wattage: ‎4 watts


Cooling Method: ‎Fan, Water


Compatible Devices: ‎Desktop


Noise Level: ‎25 Decibels


Material: ‎Aluminum, Copper, Plastic


Maximum Rotational Speed: ‎2500 RPM


UPC: ‎884102112287


Manufacturer: ‎Cooler Master


Number of Items: ‎1


Product Dimensions: ‎1.07 x 10.91 x 4.71 inches


Item Weight: ‎3.19 pounds


Item model number: ‎MLX-D24M-A25PZ-RW


Date First Available: ‎March 26, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Mar 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Awesome performance for the price
Style: 120L Core
Cooling better than the 240mm aio I was previously using and fits in my case better (medium sized case). Easy to mount and install. 12900kf new build never hit 80C under stress idles at 25-30C great product and build quality. I’ve only had it installed one day so I’ll update if it fails or stops cooling this well. ... show more
Reviewed in the United States on January 24, 2025 by Dustin
    • Only solution possible for my Lenovo
Style: 120L Core
I own a Lenovo ThinkCentre Neo 50T Gen3 Tower with 64GB RAM, an Intel i9-12900K, and a 4TB NVMe SSD. To support four monitors, I installed a new graphics card, but the system immediately started overheating—understandably. Upon researching solutions, I discovered a major limitation: the proprietary motherboard prevents transferring the components to a larger case for better airflow. Additionally, the mounting plate for the CPU cooler is soldered to the motherboard, which made traditional cooling solutions impossible. After trying several unsuccessful cooling setups, I came across this one. The pump mounted perfectly, and I installed the fan and radiator on the exterior of the case. While it's not the most aesthetically pleasing setup, I don’t care about appearances—I’m an attorney and just need my computer to run reliably without the constant fear of overheating. As for noise, I’m still adjusting to how quiet the system is. It’s strange not hearing the fan whirring, and I often worry it’s not functioning. However, stress tests have consistently shown the CPU stays below 43°C, which is a huge relief. This solution may not win any design awards, but it gets the job done efficiently and quietly. ... show more
Reviewed in the United States on January 8, 2025 by Kenneth
    • Better then average air coolers
Style: 120L Core
Never owned a 120mm Water cooler so I was a little skeptical on how it would do compared to some air coolers I had but I was surprised at the results. Kept my Ryzen 7700 at 34C on idle. Beats my AMD Prysim cooler by 4C. Gaming Temps were between 4-8C cooler as well. However the mounting system could be a little better I had some problems mounting it at first otherwise would give 5 stars. The Water cooler itself is basically silent but the fan can get a little loud at full RPM. For 55$ when I got it on sale it’s definitely worth getting. ... show more
Reviewed in the United States on May 8, 2024 by Tommy
    • Quiet, efficient, and simple
Style: 120L Core
I am still using the older version of this in another build that is run 24/7 for my security camera's and moderate gamming. It's been 4 years so far since installation and no issues or loss in cooling efficiency. I ran the computer overclocked around 60c-99c for 2 of those years..... Years later this newer model replaced it. Different fan and I'm sure different pump design/motor. The pump face design is practically identical. Installation is a breeze, and it looks like it belongs in my build. This is the BEST budget AIO water cooler. I would not recommend anyone go lower than this brand's quality for aio's because it is a liability. I've herd too many horror stories about cheap aio's leaking, bursting, or random pump fails all within a year. I would be devastated to came back to a wet ruined PC because I cut cheap on my aio. Fan n' heatsink is too loud, and a full-blown water-cooling system is too much maintenance. This device fall's perfectly in-between and the fact the previous version of this model is still running perfect in spite of being run at near max operating temps for extended periods of time and it being well past its life expectancy without warranty voiding maintenance being needed. I always keep power to pump at 50%-65%. Anything higher does not improve cooling and raises operating sound, and if it does cool better, it's by 1 degree. ... show more
Reviewed in the United States on January 4, 2025 by Josh
    • Quiet and looks great, works as expected
Style: 240 Atmos
I'm a big fan of Cooler Master products and this 240mm cooler came with everything I needed for AM5 9800x38 and looks very cool when lit up and cools as I expected..
Reviewed in the United States on March 9, 2025 by Glenn R.
    • Works like a champ
Style: 120L Core
My old cooling system was leaking coolant. This relaced it perfectly. Very quiet fan. It does keep the CPU cool.
Reviewed in the United States on March 2, 2025 by Edward Kellogg
    • Good value cooler, difficult install for AMD
Style: 120L Core
Updated: Review based on 120l install on AM4 socket Ryzen 5600x in a SFF case. I have mixed feelings about this cooler. It replaced my 7 year old EVGA AIO that died. 1. It does not come with everything you need to mount it to the AM4 socket motherboard. You'll need the original 2 plastic mount pieces with backplate that came with your motherboard for the included AM4 bracket to attach. This is often removed when you install other coolers. If you kept those in the box or something your good. I lost one unfortunately. I called a local PC repair shop and got the 2 replacment parts same day. You can also order them on Amazon pretty cheap. 2. The AM4 bracket pieces included are really flimsy and not as well built as the other brackets included. It's nowhere near the quality of the EVGA I bracket I had. It's also a bit of an awkward install if your working in a tight space. But it seems sturdy after installing and rest of the hardware seems well built. 3. The included thermal paste does not come with a paste spreader and it's the most difficult thermal paste I've ever used. Incredibly thick, very sticky, and does not spread easily. However reviews show it works really well. 4. It's only been a day and most.of this review has been on on the install. I'll update the performance later this week. 5. Update a week after use: Does a good job for the size, I have the 120. Ambient temps in a SFF case low 40s, high 50s under load gaming. Pretty quiet and gets the job done. ... show more
Reviewed in the United States on July 2, 2024 by Expat_Medic
    • Easy installation and works great
Style: 240 Atmos White
I went from expensive air cooler to this one. Went from continuous overheat and shut down to running 45° max. Superr quiet and efficient. I would recommend to anyone with a large tower definitely
Reviewed in the United States on December 8, 2024 by Dirty Expert

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