Review of Cooler Master Seidon 120XL CPU Water Cooling System

TestFreaks Data
Galaxy S6 Cases on Amazon


Specifications and Features



Seidon 120XL

The Seidon 120XL is Cooler Master’s latest update to its incredibly compact watercooling kit that aims to bring a thick, high performance watercooler to the masses. It fits in many cases, 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 two 120mm PWM fans 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.

Closed loop design – requires zero maintenance for years.
UltraFine Micro Channel waterblock enlarge the contact surface between cold plate and coolant.
Durable and powerful water pump – dissipates heat effectively through stable water circulation.
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.


Model: RL-S12X-24PK-R1
CPU Socket:
-Intel LGA 2011 / 1366 / 1156 / 1155 / 1150 / 775
-AMD Socket FM2 / FM1 / AM3+ / AM3 / AM2+ / AM2
Pump Dimensions: ø 70 x 27mm (ø 2.75 x 1.1 inch)
Radiator Dimensions: 150 x 120 x 38 mm (5.90 x 4.72 x 1.50 inch)
Radiator Material: Aluminum
Fan Dimension: 120 x 120 x 25 mm (4.7 x 4.7 x 1 in)
Fan Speed: 600~2400 RPM (PWM) ± 10%
Fan Airflow: 19.17 ~ 86.15 CFM ± 10%
Fan Air Pressure: 0.31 ~ 4.16 mm H2O ± 10%
Fan Life Expectancy: 40,000 hours
Fan Noise Level (dB-A): 19 ~ 40 dBA
Fan Bearing Type: Rifle bearing
Fan Connector: 4-Pin
Fan Rated Voltage: 12 VDC
Fan Rated Current: 0.2 A
Fan Power Consumption: 3.6 W
Pump Life Expectancy: 70,000 hrs
Pump Noise Level: <25 dBA
Pump Rated Voltage: 12 VDC
Pump Load Current: 0.15 A
Pump Power Consumption: 1.8W
Warranty: 2 years

Price: $84.99 (from Amazon at time of review)