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Cooler Master · 240 mm liquid cooler · 240 mm radiator

Cooler Master 240 Atmos

2 fans · 27 dBA · RGB

Performance: 86%
Perf / price: 41
Acoustics: 70
Amazon: $93

View Cooler Master 240 Atmos Gallery in high resolution

Available on Amazon Updated Aug 30, 2026 Prime FBA

Performance85.5%

Performance / price40.7

Acoustics70.4

$93 on Amazon Cooler table Compare this cooler

Check this cooler in a buildSelect a CPU and case first so socket, height, and radiator support can be evaluated. Start with the CPU

Written analysis

Cooler Master 240 Atmos at a glance

The Cooler Master 240 Atmos is a 240 mm liquid cooler cooler listed as 240 mm radiator. It is listed with 2 120 mm fans.

Review-derived relative cooling performance is 85.5%. Recorded noise is 27 dBA, for an acoustics score of 70.4. Airflow is listed at 71 CFM. Warranty is 5 years.

Best fit: Mainstream and performance desktop builds that need solid review-derived cooling performance.

Fitment and sockets

Radiator class is 240 mm — confirm case radiator support. Socket compatibility includes LGA 1150, LGA 1151, LGA 1155, LGA 1156, LGA 1200, LGA 1700, LGA 1851, AM5, AM4. CPU block / cold plate: Copper.

Current value

At $93, performance / price is 40.7. Compare nearby coolers of the same type below; quieter acoustics and fitment can outweigh a small score gap.

Cooler data

Full specifications

Cooling type, fitment, sockets, fans, acoustics, features, and value in one technical sheet.

General

Manufacturer: Cooler Master
Cooler: Cooler Master 240 Atmos
Warranty: 5 years
Launch price: —
Amazon price: $93
Amazon availability: Available
Price updated: Aug 30, 2026

Cooling type & fit

Type: 240 mm liquid cooler
Size class: 240 mm radiator
Height: 28 mm
Radiator class: 240 mm
Radiator dimensions: 277 x 119.6 x 27.2 mm

Value

Amazon price: $93
Relative performance: 85.5%
Performance / price: 40.7
Acoustics: 70.4

Sockets & block

Socket compatibility: LGA 1150, LGA 1151, LGA 1155, LGA 1156, LGA 1200, LGA 1700, LGA 1851, AM5, AM4
CPU block: Copper

Fans & acoustics

Fan size: 120 mm
Fan count: 2
Fan speed: 2500 rpm
Noise: 27 dBA
Airflow: 71 CFM
Acoustics score: 70.4

Features

RGB lighting: Yes
Thermal paste included: No
Display: —
Color: Black

Additional information

Also listed as: 240 Atmos

Amazon

Price history

Nearby performance

Similar coolers

Coolers close to Cooler Master 240 Atmos on relative performance. Open the cooler table to sort, filter, and compare side by side.

Cooler Master Cooler Master 240 Core II 240 mm liquid cooler · 240 mm radiator

85.0%

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Thermalright Thermalright Aqua Elite 240 V3 240 mm liquid cooler · 240 mm radiator

85.0%

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$45

Cooler Master Cooler Master 240 Atmos This cooler

85.5%

40.7

70.4

$93

MONTECH Montech HyperFlow ARGB 240 240 mm liquid cooler · 240 mm radiator

86.4%

44.8

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$85

HYTE HYTE THICC Q60 240 mm liquid cooler · 240 mm radiator

86.4%

20.3

40.2

$187

Arctic Arctic Liquid Freezer III 240 Black 240 mm liquid cooler · 240 mm radiator

86.5%

29.3

63.3

$130

Corsair Corsair H115iElite RGB 280 mm liquid cooler · 280 mm radiator

86.9%

—

61.3

—

Cooler Master Cooler Master MasterLiquid 360L 360 mm liquid cooler · 360 mm radiator

87.0%

59.3

69.9

$65

ASUS ASUS ROG Ryujin III 240 ARGB 240 mm liquid cooler · 240 mm radiator

87.0%

22.5

52.8

$170

Compare these in the cooler table

Discussion

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

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%.