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Cooler Master Seidon 240M Liquid Cooler Review

Looking for lower CPU temps? Today we are having a look at the Seidon 240M, a pre-fabricated dual radiator water cooling system from Cooler Master.

Cooler Master Seidon 240M
Cooler Master Seidon 240M

Summer is upon us (on the northern hemisphere anyway!) and the cooling demands of enthusiasts increased manifold. When air cooling is just not enough, liquid cooling systems come into play. The most basic and user-friendly form of water cooling is pre-fabricated closed loop kits, which require no assembly or maintenance at all; just installation on the CPU and enough room in the case for the radiator. Today we are going to review one of the bigger pre-fabricated water coolers, the Cooler Master Seidon 240M. As the name suggest, the kit features a double radiator for two 120mm fans. Cooler Master hopes that with this relatively compact and ready-to-run water cooling kit, they can appeal to the mainstream market and to enthusiasts as well.


Model RL-S24M-24PK-R1
CPU Socket Intel LGA 2011 / 1366 / 1156 / 1155 / 1150 / 775AMD Socket FM2 / FM1 / AM3+ / AM3 / AM2+ / AM2
Pump Dimensions ø 70 x 27mm (ø 2.75 x 1.1 inch)
Radiator Dimensions 273 x 120 x 27 mm (10.7 x 4.7 x 1.1 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
UPC Code 884102020049

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