Cooler Master MasterLiquid 240 Atmos Stealth – 240mm AIO Liquid CPU Cooler
Upgrade your PC cooling with the Cooler Master MasterLiquid 240 Atmos Stealth, a premium 240mm all-in-one liquid CPU cooler engineered for high performance, low noise, and long-term reliability. Designed for modern Intel and AMD platforms, this AIO cooler delivers efficient thermal control for gaming PCs, creator workstations, and high-end builds.
Featuring a high-efficiency dual-fan radiator, a quiet low-profile pump, and Cooler Master’s refined cooling architecture, the 240 Atmos Stealth keeps CPU temperatures under control even during demanding workloads — without unnecessary RGB distractions.
Key Features
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High-Performance 240mm AIO Cooling
Efficient aluminum radiator paired with dual 120mm fans for excellent heat dissipation. -
Quiet, Reliable Pump Design
Optimized pump operates at <25 dBA, delivering stable cooling with minimal noise. -
Dual 120mm PWM Fans
High airflow up to 75.2 CFM with precise PWM control for quiet operation under light loads and strong cooling when needed. -
Broad CPU Socket Compatibility
Supports modern Intel LGA 1700 / 1851 and AMD AM4 / AM5 platforms. -
Stealth, Non-RGB Design
Clean black aesthetic ideal for minimalist builds and professional setups.
Technical Specifications
Brand: Cooler Master
Model: MasterLiquid 240 Atmos Stealth
Part Number: MLX-D24M-A24PK-R1
Type: All-in-One Liquid CPU Cooler
Pump
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Dimensions: 84.9 × 81 × 53.15 mm
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Noise Level: <25 dBA
Radiator
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Size: 277 × 119.6 × 27.2 mm
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Material: Aluminum
Fans
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Quantity: 2 × 120mm PWM fans
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Fan Speed: 0–2400 RPM (±10%)
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Airflow: 75.2 CFM
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Noise Level: 30 dBA
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Bearing Type: Loop Dynamic Bearing
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Connector: 4-Pin PWM
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Color: Black
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RGB: None
CPU Socket Compatibility
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AMD: AM4, AM5
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Intel: LGA 1150 / 1151 / 1155 / 1156 / 1200 / 1700 / 1851
Returns & Compatibility (Liquid Coolers)
Return Notice – Liquid CPU Coolers (Important)
Defective or Incorrect Items
- If your cooler arrives defective, damaged, or incorrect, contact us within the applicable return window.
- Defective items are eligible for replacement or refund at no additional cost once the issue is verified.
Non-Defective Returns (Change of Mind / Compatibility)
- Non-defective returns may be subject to restocking fees and return shipping costs.
- Items must be unused, uninstalled, and returned in original packaging.
Opened or Installed Items
- Opened or installed liquid CPU coolers are not eligible for return unless defective.
- Installation, attempted installation, or use is considered acceptance of the product.
Compatibility Responsibility
- Please confirm CPU socket compatibility and that your case supports a 240mm radiator before ordering.
- Returns due to incompatibility are not considered defective.
What’s in the Box
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MasterLiquid 240 Atmos Stealth AIO Cooler
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Dual 120mm ARGB Fans
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CryoFuze Thermal Paste
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Intel & AMD Mounting Hardware
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Installation Manual
Compatibility Notice (Please Read Before Ordering)
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Your PC case must support a 240mm radiator (top or front mounting).
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Please verify CPU socket compatibility before purchase.
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Returns due to incompatibility are not considered defective.
Why Buy from Swiftwintek?
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✔ Free Shipping
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✔ Factory-sealed, brand-new product
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✔ US-based fulfillment
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✔ Clear compatibility guidance to avoid issues
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