Search  for anything...
Cooler Master

Cooler Master 240 Atmos 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 109 reviews
Condition: New
Checking for product changes
$124.25 Why this price?

Buy Now, Pay Later

As low as $20.71 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 8
Order within 9 hours and 1 minute
Available payment plans shown during checkout

Recently Viewed

Style: 240 Atmos


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.

Product Dimensions: 10.91"L x 4.71"W x 1.07"H


Brand: Cooler Master


Power Connector Type: 3-Pin


Cooling Method: Water


Compatible Devices: Desktop


Noise Level: 25 dB


Material: Aluminum, Plastic, Copper


Maximum Rotational Speed: 2500 RPM


UPC:


Manufacturer: Cooler Master


Product Dimensions ‏ : ‎ 10.91 x 4.71 x 1.07 inches; 3.19 Pounds


Item model number ‏ : ‎ MLX-D24M-A25PZ-R1


Date First Available ‏ : ‎ September 29, 2023


Manufacturer ‏ : ‎ Cooler Master


Country of Origin ‏ : ‎ China


Best Sellers Rank: #68 in Water Cooling Systems


Customer Reviews: 4.2 4.2 out of 5 stars 109 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 8

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Excellent
Style: 120L Core
I wanted to wait awhile to see if this was going to be OK before I wrote a review. I bought this to replace a failed HP unit and so far this has worked perfectly. It is quiet and my temps are down 10 degrees C from the HP unit. It also comes with everything needed to install the unit, but I do recommend getting better thermal paste. ... show more
Reviewed in the United States on August 26, 2024 by Daniel
    • Silent Pump, Great Cooling
Style: 240 Atmos
This cooler works great. I'm coming from TWO EK CR240 coolers that developed grinding pumps within a month. Installing this, the pump is dead quiet, and using the same fans (Phanteks T30) and same thermal paste across all of them, this runs about 5c cooler than the EK coolers. It could be the large difference is due to the pumps, which seem to have been defective. Either way, this cooler is dead silent and cools well. You don't have to use all of the RGB nonsense it comes with and deal with a big nest of cables, either. If you just want to install the cooler without fan RGB it's just the PWM pump header and the fan header on the mobo. You can plug the pump head in to any 2nd gen RGB plug on the motherboard, too. It's a very clean install overall. ... show more
Reviewed in the United States on December 29, 2023 by Chad
    • Great Water Cooling
Style: 240 Atmos
Great water cooling, keeps my cpu in the 40-45c range when idle compared to the other one I got from another manufacturer. I did have some issues with it trying to keep my cpu cool while I was using ray tracing on max, it wouldn't keep the heat down over time using ray tracing AMD and actually shut down my computer. I don't know if that is because I have a smaller radiator than the cpu wants or what. Design is great and I love hex thermal paste template. Light Design was great. ... show more
Reviewed in the United States on July 4, 2024 by Marlon
    • 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
    • Very easy install
Style: 120L Core
Got it as a replacement for a stock cooler for an amd cpu very easy to get setup it was my first ever part i swapped out on a pc myself so if i can do it as a beginner anyone can
Reviewed in the United States on August 24, 2024 by Metacrutch
    • I would give this a ZERO, but only ONE STAR IS AVAiLABLE
Style: 240 Atmos
I bought this to replace a Cooler Master 240 RGB that came with my custom PC 4 years ago. The original one was not cooling anymore. When I received this one, Cool Master product registration product is the worst, you have to go to another website to register, which was down most of last week. This product is suppose to work the Cooler Master MasterPlus and MasterCtrl software to monitor the cooler. Both software programs would not recognize the registered product installed. The product is self was not working correctly, so I contacted Cooler Master technical support and based on issues, such as the lights would not work and the AIO pump was not keeping my system cool enough, Cooler Master recommended that I return the product to Amazon. It is defective. When I started the Amazon return product, it says "This return requires special attention - contact the seller' Through the seller chat, I said the product was defective and The Seller says the product is NOT RETURNABLE - EVEN THOUGH IT WAS DEFECTIVE and Cooler Master Tech support told me to return it. DO NOT ORDER FROM THIS SELLER. Based on the poor seller of these products, I switched to the ASUS ROG RYUO III 240 ARGB All-in-one AIO Liquid CPU Cooler. This product has a better pump, easy to register, and ASUS software works to allow me to monitor the cooler and change colors. Cooler Master technical support was excellent. Just wish their software and products were as good. But as mention, my last Cooler Master liquid cooler lasted 4 years before needing replacement. ... show more
Reviewed in the United States on August 6, 2024 by rkuntz
    • 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
    • Good Value
Style: 120L Core
Just recently had an off brand liquid cooler fail and lost a CPU in the process. To replace the failed unit, I purchased the no frills, one fan, version of this cooler based on a 2018 purchase that's still going strong. It was easy inexpensive relative to the other brand, easy to install (AMD4), quiet, and I have no doubt that it will serve me well for several years. ... show more
Reviewed in the United States on May 2, 2024 by Amazon Customer

Can't find a product?

Find it on Amazon first, then paste the link below.