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Item#: N82E16835103181

Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

  • 600~2400 RPM (PWM) +/- 10% 19.17 ~ 86.15 CFM +/- 10%
  • Radiator Dim. 273 x 120 x 27 mm (10.7 x 4.7 x 1.1 inch)
  • Fan Dim. 120 x 120 x 25 mm (4.7 x 4.7 x 1 in)
  • Fan Noise 19 ~ 40 dBA
IronEgg
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This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Following the success of the Seidon 120M, COOLER Master introduces an improved CPU water cooler Seidon 240M. It has all the cooling technologies of Seidon 120M applied and has larger radiator up to 240mm. The larger radiator not only sheds more heat but also supports two 120mm fans. The compact design brings it to the masses. Also, the Seidon 240M is designed with zero maintenance and universal CPU socket compatibility.

  • newegg Fantastic cooling 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 240mm radiator is designed to dissipate huge heat from overclocked CPU and can accommodate two 120mm PWM fans. The 120mm PWM fan offers a wide RPM range of 600~2400 +/- 10% allowing you to fine tune and balance fan noise and performance.
  • newegg Zero maintenance Factory filled with coolant, then sealed and pressure tested, the COOLER MASTER Seidon 240M requires zero maintenance for years.
  • newegg Universal Socket Compatibility The COOLER MASTER Seidon 240M features universal socket support including Intel LGA2011, 1366, 1156, 1155 and LGA775 as well as AMD FM2, FM1, AM3+, AM3, AM2+, and AM2.


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.



Cooler Master Seidon 120M Liquid CPU Cooler

The Seidon 120M is Cooler Master’s latest, incredibly compact watercooling kit that aims to bring watercooling to the masses. It fits in virtually every case, 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 Seidon can operate silently or unleash a powerful cooling storm at your command.

UNIQUE FULL COPPER WATERBLOCK DESIGN
Utilizes a micro-channel design to maximize surface contact area to quickly pull heat away from your processor.
SAFE OPERATION INDICATOR LED
A reassuring blue LED indicator light shines brightly when the pump is powered and running properly.
UNIVERSAL MOUNTING SOLUTION
Supports the latest sockets from Intel and AMD

- Intel LGA 2011/1366/1156/1155/1150/775

- AMD Socket FM2/FM1/AM3+/AM3/AM2
MAINTENANCE-FREE SETUP
Guaranteed for maintenance-free operation for years to come without the need to refill coolant.

Technical Specs:

Model RL-S12M-24PK-R1
CPU Socket Intel LGA 2011 / 1366 / 1156 / 1155 / 1150 / 775

AMD Socket FM1 / AM3+ / AM3 / AM2
Main System Dimension Ø 70 x 27mm (Ø 2.75 x 1.1 inch)
Radiator Dimensions 150.3 x 118 x 27mm (5.9 x 4.6 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 0.3A
Fan Power Consumption 3.6W
Pump Life Expectancy 70,000 hrs
Pump Noise Level 17dBA
Pump Connector 3-Pin
Pump Rated Voltage 12 VDC
Pump Load Current 0.15A
Pump Power Consumption 1.8W
Warranty 2 years
UPC Code 884102018930

 

  • newegg Superior cooling performance The COOLER MASTER RL-S12M-24PK-R1 features a waterblock machined out of a single block of copper for the best possible heat transfer. Precision machined Micro Channels maximize the water contact surface to quickly dissipate heat. Plus, its compact 120mm aluminum radiator fits in virtually any case, internal or external to satisfy various needs.
  • newegg Speed control for low noise Fin design is optimized for minimum air restriction to reduce fan speed and noise. 120mm PWM fan with a wide RPM range fines tune and balances fan noise and performance.

The Seidon 120V is Cooler Master’s latest compact water cooling kit with the best cost/performance ratio. The water block and 120mm PWM fan work side by side to dissipate heat efficiently. No maintenance is needed for this water cooling solution. It fits in virtually every case, and is compatible with every available Intel and AMD platform

  • newegg Optimized pump and water block The optimized pump and water block provide excellent water flow and system performance. The durable FEP Tubing provides the advantages of nearly no moisture absorption, high thermal stability, and high pressure tolerance.
  • newegg Maximum water contact surface The precision machined micro-channel maximizes the water contact surface for quickly heat dissipation.
  • newegg 120mm PWM fan The water cooler comes with a 120mm PWM fan with a wide RPM range. The fan operates at low RPM when you do everyday computing, and operates at high RPM when you play intense games. Enjoy the best balance between cooling performance and noise level!
  • newegg Universal mounting solution The tool-free universal mounting system is compatible with all available Intel and AMD platforms.
  • newegg Blue LED indicator The blue LED indicator shines brightly when the pump is running properly.
  • newegg Maintenance free The Seidon 120V is factory filled with coolant, then sealed and pressure tested. No maintenance is need for years!


Learn more about the Cooler Master RL-S24M-24PK-R1

General

Brand
COOLER MASTER
Series
Seidon 240M
Model
RL-S24M-24PK-R1
Type
Liquid Cooling System

Block

Block Compatibility
Intel LGA 2011 / 1366 / 1156 / 1155 / 1150 / 775
AMD Socket FM2 / FM1 / AM3+ / AM3 / AM2+ / AM2

Pump

Pump Noise
<25 dBA

Radiator

Radiator Dim.
273 x 120 x 27 mm (10.7 x 4.7 x 1.1 inch)
Radiator Material
Aluminum

Fan

Fan Dim.
120 x 120 x 25 mm (4.7 x 4.7 x 1 in)
Fan RPM
600~2400 RPM (PWM) +/- 10%
Fan Air Flow
19.17 ~ 86.15 CFM +/- 10%
Fan Noise
19 ~ 40 dBA
Fan Connector
4 Pin

Features

Features
Factory filled with coolant, then sealed and pressure tested - requires zero maintenance for years.

Waterblock made with UltraFine Micro Channel enlarge the contact surface between cold plate and coolant.

Durable and powerful water pump - dissipates heat effectively and maintains temperatures through stable water circulation.

Performance 240mm radiator is designed for handling high wattage overclocked CPU.

Double 120mm PWM fan with a wide RPM range to fine tune and balance fan noise and performance.

Quick Info

Warranty

  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years


Customer Reviews of the Cooler Master RL-S24M-24PK-R1

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  • Cody P.
  • 4/4/2014 1:23:34 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: Great cooling capabilities, includes an adapter so both fans can plug into one port on the motherboard.

Cons: It mounts very deep, had to get a new case for it, although I was in the market for a new case anyways. Other than that this is a great product

Did you find this review helpful? Yes No

  • Jack T.
  • 3/20/2014 12:55:56 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsVerry Good Cooler...

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: Great cooler, keeps my 4770k at 29c idle, and 45c at load, and is very quiet .Works well when over clocking......

Cons: 1st one had a pump wine/rattle sound, RMA was fast "thanks Newegg". Newegg & coolermaster were very helpful and had a new one to me very fast, and that's why I did not take off eggs...........

Other Thoughts: Would buy again, and recommend....

1 out of 1 people found this review helpful. Did you? Yes No

  • Phillip B.
  • 3/17/2014 11:58:39 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year

3 out of 5 eggsDisappointed in OC capabilities

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: At the stock clock on my FX8350, this worked awesome.

Cons: Fans are LOUD and the screw holes strip quite easily.

Other Thoughts: So far I am kinda disappointed with the performance of this with my FX8350. At stock clock, it is fine but I currently have mine at 4.5GHz and the CPU get to 58*C which from what I have read is only a couple off from the max of 65*C for the FX8350. I tried 4.8GHz at first and within a couple minutes of playing BF4, I was over 72*C. I was kinda expecting the larger 240M radiator to do better at cooling it. I don’t know it it is the fans or something with the mooting but at about 54*C my fans come on high and I get a bad rattle. I have tried adjusting the screws and making sure the rubber dampeners are secured but still have a rattle.

My System:
Cpu: AMD FX-8350 4.0GHz 8-core (OCed to 4.82GHz)
Psu: OCZ Fatal1ty 750W
Case: Corsair Vengeance Series C70 Arctic White
Memory: 16GB GSKILL ARES DDR3 2400 2x8GB
Motherboard: ASUS Crosshair V Formula-Z
Cpu Cooler: Cooler Master Seidon 240M
Gpu: MSI GTX 760 OC 4GB
Hard Drive: 500GB Samsung 840 EVO SSD, 1TB Seagate, 3TB Seagate

0 out of 1 people found this review helpful. Did you? Yes No

  • Michael H.
  • 3/10/2014 4:20:06 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsCooler Master Seidon 240m

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: Does the job great. Install was pretty simple. If you have trouble with the install, go online for a manual; any material included is kind of a joke. It keeps my AMD chip cool no matter what and fits right up front in my Cooler Master HAF xB case.

Cons: The blue LED light on the pump is unnecessary in my opinion. One of the fan's bearings started going out (making a lot of noise). The pump makes a very faint clicking/grinding noise, but it has been for a over 4 months, so I think it is just how it is.

Did you find this review helpful? Yes No

  • Kenneth B.
  • 3/8/2014 8:47:10 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsNice and Cool

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: Easy set up and overall quality design.

Cons: The stock fans are kind of loud and a little flimsy. When using the provided rubber gasket for install on the case, the gasket will easily get in the way of the fan. It will need some adjusting after install.

Other Thoughts: I used this in a pull configuration, because I didn't have the room in the 600T case with the ASUA Maximus VI Formula motherboard. I also wanted less dust build up between the fan and radiator. So having these fans on the top side of the case and under the filter, made these fans kinda loud and it's a snug fit under the dust guard/filter. I ended up using Corsair SP120 performance fans. This made for a great combo!

1 out of 1 people found this review helpful. Did you? Yes No

  • Lawrence H.
  • 3/7/2014 1:20:48 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggs

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: None

Cons: Had to modify installation since unit would not fit in case. It is a mid tower, so using double sided tape to hold the fans on outside of case as I do not want to drill holes since I have a feeling this water cooler piece of Junk will be going into garbage soon. The pump is noisy only after a couple days of use, returned to New egg and of course cut out UPC for Rebate which sounds like from other reviews I will never see. New Egg will not accept exchange or a refund without UPC. Understandable just learned my lesson not to purchase rebated Item. My main concern is now I'm stuck with a noisy pump that is a piece of Junk. If you do order just hold onto all your packing materials and do not cut out your UPC. I would go with another product if I had to do it again.

1 out of 3 people found this review helpful. Did you? Yes No

  • Jeff M.
  • 3/5/2014 6:40:29 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsVery frustrating support experience

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: When functioning, this cooler was capable of keeping my 4670k quite cool with a 4.6 GHz overclock. Core temps did not exceed 145 degrees fahrenheit under full load.

Cons: The pump head failed after 7 months of use. I understand that things break, however the process of getting this replaced has been excruciatingly painful. It took 5 days to get a response from support, then another two for RMA approval. Cooler Master has had the replacement for 7 business days with the status of 'testing'. That's one heck of a test! All said, my PC has been down for a month with no end in sight.

Other Thoughts: I would have rated this cooler 5 eggs, however taking all things into consideration, it gets two. I will hesitate before I buy a Cooler Master product that is critical to the functionality of my PC. I recommend that you do the same.

0 out of 1 people found this review helpful. Did you? Yes No

  • john s.
  • 3/4/2014 9:58:07 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsDude wanted water cooling!!

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: Client requested liquid cooling on this build.. always used air on all my builds since the... uhhh 286 days...
Installation was a breeze.. had no need to even look at the install directions was so straight forward.
tubes were long enough to run up to radiator mounted on top of a cooler master cosmo's II.
once I got the pump speed and fan speed dialed in, in the bios super quiet.
Keeps this FX-8350 quite cool even under a load.. client playing BF4, downloading... stuff, teamspeak running all at the same time never noticed CPU temps above 70C ( I think, been several weeks now)
got this on sale for a total of $69 after promo and rebate.. Yee haw
have since gone on to replace my own CM V8 CPU Cooler with one of these. had never been a big fan of liquid cooling until I tried this... just goes to show you CAN teach an old dog new tricks.

Cons: uhm...no

Did you find this review helpful? Yes No

  • Sean K.
  • 2/27/2014 3:01:39 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat product

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: I have this cooling system on an intel i7 4770K over clocked to 4.3Ghz. I usually have an idle temperature of around 28 degrees centigrade, and a stressed temperature of around 45 degrees centegrade. Since the 4th generation haswell processors run notoriously hot, I feel safe in saying that this system will cool just about anything.

The Seidon 240M is also very well built, and comes with two good quality cooler master PWM fans.

Cons: The only complaint I have about this unit is that it is big. This will not fit in a mid tower I had to modify my case to install the radiator without laying it on top of my RAM modules. If you want to run any 240mm water cooler though, you should use a full tower unless you want to modify your case.

Did you find this review helpful? Yes No

  • Jeff J.
  • 2/10/2014 11:16:03 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsMy first Liquid Cooling unit

This review is from: Cooler Master Seidon 240M – All-In-One CPU Liquid Water Cooling System with 240mm Radiator and 2 Fans

Pros: Solid feeling
Nice copper surface in the heatsink
Somewhat Easy to mount/install
Quiet during normal use

Cons: Screws included are a tad short when mounting the radiator in the top of my case. I saw other reviews mention this so I wasn't surprised. I'll just pick up some longer ones when I hit the hardware store.

Other Thoughts: I paired this with a FX-8320@4.0ghz.Idle temps 28C, OCCT Load test 49C. Seems to keep the CPU very cool. It's also really quiet. If I put my ear close the the case I can barely hear the pump making a humming sound. Also, the fans do rev up a little when my CPU got to mid 40's, but I don't think they were running at max, even when I had the CPU under full load. Overall, glad I bought it. I also got it for 69.99 after rebate.

1 out of 2 people found this review helpful. Did you? Yes No

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Item#: N82E16835103181
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