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Item#: N82E16835103180

Cooler Master Seidon 120XL – Push-Pull CPU Liquid Water Cooling System with 120mm Radiator and 2 Fans

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  • Double Fans, 600 - 2400 RPM (PWM) +/-10% 19.17 - 86.15 CFM +/-10%
  • Radiator Dim. 150 x 120 x 38mm
  • Fan Dim. 120 x 120 x 25mm
  • Fan Noise 19 - 40 dBA

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


The Seidon 120XL is designed to bring watercooling to the masses. It fits in virtually every case, and is compatible with every available Intel and AMD platform, and as easy to install as a heatsink. It comes factory filled, sealed and tested with a two year zero maintenance guarantee. Thanks to a 120mm PWM fan with a wide RPM range and a thicker radiator with more surface area, Seidon can operate silently or unleash a powerful cooling storm at your command. 

  • newegg Superior performance The durable and powerful water pump helps dissipate heat effectively and maintain temperatures through stable water circulation. The UltraFine Micro channels on the waterblock enlarge the contact surface between cold plate and coolant for more heat transfer. Performance 38mm thick radiator is designed for handling high wattage overclocked CPU. Double 120mm PWM fan provides a wide RPM range to fine tune and balance fan noise and performance.
  • newegg Zero maintenance Factory filled, sealed and tested, the Seidon 120XL requires zero maintenance for years.
  • newegg Universal socket compatibility The Seidon 120XL is compatible with every available Intel and AMD platform.

Learn more about the Cooler Master RL-S12X-24PK-R1

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
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