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Item#: N82E16835103179

Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

  • 600~2400 RPM (PWM) +/- 10% 19.17 ~ 86.15 CFM +/- 10%
  • Radiator Dim. 150.3 x 118 x 27mm (5.9 x 4.6 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
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.
IronEgg
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 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!



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 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-S12M-24PK-R1

General

Brand
COOLER MASTER
Series
Seidon 120M
Model
RL-S12M-24PK-R1
Type
Liquid Cooling System

Block

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

Pump

Pump Noise
17 dBA

Radiator

Radiator Dim.
150.3 x 118 x 27mm (5.9 x 4.6 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.

Compact and durable all in one waterblock secured with 12 stainless steel bolts.

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.

Compact 120mm aluminum radiator fits in virtually any case, internal or external.

Fin design optimized for minimum air restriction to reduce fan speed and noise

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-S12M-24PK-R1

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Showing 233 of 233 reviews - Clear Filters

  • Mary D.
  • 4/10/2014 10:36:28 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat Cooler

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: This cooler has over exceeded my expectations in every way. I'm currently using this to cool a amd a8-5600k I wasn't expecting to overclock this processor as it was running so insanely hot with the stock heatsink and fan at 3.6ghz. However I purchased the Seidon 120m and have ended up overclocked at 4.4ghz the cpu never exceeds 48.1c. It's quiet and I can easily feel the liquid moving in the tubing. The pump/water block has adjustable fittings for the tubing allowing rotation which made it much easier to fit into my case. It also comes with a tube of thermal paste instead of pre-applied just incase you mess up this is a lovely thing.

Cons: The cons are very easily outweighed by the pros, however I will include them, Installing too the motherboard for a fm2+ socket was a little difficult the block itself moves and slides if your not careful and you will probably want to clean and reapply thermal paste after this happens to prevent hot-spots.

Other Thoughts: I never trust thermal paste that comes with a cooler so I went ahead and put Artic Silver 5 on this installation. I also went ahead and put another fan onto the radiator it does come with screws to add another fan however the single fan is probably just fine as the fan it comes with does move a good bit of air.

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

  • Ernesto C.
  • 4/7/2014 4:17:54 PM
  • Tech Level: Low
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsFradulent Rebate

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: The cooler works, but the rebate sale was fradulent!

Cons: I bought this cooler when newegg had a sale with 25$ rebate last august 2013, I completed and mailed the documents within the time frame. The rebate was never heard of, unfortunately this is one of the few companies that have failed to provide a rebate, a first and a last purchase from me.

Manufacturer Response:

Dear PC Enthusiast,

We apologize for the trouble you are experiencing with rebate. Can you please contact us so we can rectify this issue.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Luke S.
  • 4/3/2014 7:57:26 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsDecent

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: Comes in one piece.

Cons: Tubing is too short for my setup.

CPU hits 60º after play ESO.

Other Thoughts: I am going to try reseating this with fresh thermal paste to see if I can keep CPU temp below 60º under continuous load, but if it doesn't help, I'm goin to buy something else with longer tubing.

Did you find this review helpful? Yes No

  • Eric M.
  • 3/27/2014 9:29:16 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsCooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: -Excellent cooling for the price. I have mine set up with a push-pull.
-Very quiet. No pump noise that I can hear.
-Install and forget. Low to no maintenance.

Cons: Very stiff hoses. I felt like if I moved it around to quickly or in the wrong direction during the install I would cause a seal to beak. Thankfully, that didn't happen. Placing the pump/heat-sink onto the CPU was an absolute nightmare. The idea of being gentle and being precise with your placement went out the window after 15 minutes of struggling with the mounting screws.

Other Thoughts: Could definitely use some longer screws on the mounting bracket for the heat-sink. I felt like a cave man trying to perform brain surgery.

Did you find this review helpful? Yes No

  • Mr. n.
  • 3/22/2014 4:19:22 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsCooler Master Seidon 120M

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: Nice design

Cons: They sent me 2 of the same bracket. I had to break the bracket that's holding the screws on one of them and flipped the screws around just to be able to use it. Once I had it in it makes a really loud CLANKING noise due to the pump mechanism. Would never buy this again nor recommend to anyone.

Manufacturer Response:

Dear Kay,

We apologize for the trouble that you are experiencing with the Seidon 120M. You do not need to try and install the cooler if parts were missing. If you can contact us, we will send you a complete accessory kit for free this way you can properly mount the cooler.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Aaron K.
  • 3/20/2014 6:53:32 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsSolid for the price! A bit loud!

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: Easy install instructions, nifty blue LED on the cpu cooler!
My PC has a radiator! :)

CPUID HWMonitor after a solid week of heavy use:

CPU temps: MIN: 23C (73 F) MAX: 33C (91 F)

Cons: It's louder than I thought it would be but I switched to a quieter case.

Other Thoughts: Be sure to read up on proper THERMAL PASTE procedures if you are switching this into a system with another CPU cooler installed. :)

Did you find this review helpful? Yes No

  • Vincent L.
  • 3/13/2014 11:54:58 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: Does the job and does it well for the price.

Cons: Careful with installation. The wires are weak and felt flimsy.

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

  • James P.
  • 3/11/2014 7:59:13 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsInstallation failed

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: None that I can think of, since it would not install

Cons: One screw was bad on the retention clip. Asked the company if I could buy a new screw or retention clip and never heard back.

Manufacturer Response:

Dear James P,

We apologize for the trouble you are experiencing with the Seidon 120m. Please contact us so that we can send you a new accessory kit.

Phone: 888-624-5099 Ext: 160

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Mehdi L.
  • 3/5/2014 2:54:35 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsCooler Master Seidon 120M

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: I find it very quiet
Fits perfectly with the Elite 130 case
Easy to install

Cons: Manual not very useful
4-pin fan cable could have been a little longer

Did you find this review helpful? Yes No

  • Jerry J.
  • 2/22/2014 10:05:10 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsPretty much what I expected

This review is from: Cooler Master Seidon 120M – All-In-One CPU Liquid Water Cooling System with 120mm Radiator and Fan

Pros: It's quieter than I expected.

Cons: I wish the hoses where more flexible.

Other Thoughts: I read some reviews over at AnandTech from where they tested 14 separate AIO closed system coolers. They didn't test this exact model but one similar and they said it was loud. I was pleasantly surprised that it wasn't as loud as I expected. I bought a second one for mt other desktop and both run very smoothly.

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

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Item#: N82E16835103179
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