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Cooler Master > 
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%
  • Fan Noise 19 - 40 dBA

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews



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.

Learn more about the Cooler Master RL-S12M-24PK-R2

Warranty, Returns, And Additional Information

Customer Reviews of the Cooler Master RL-S12M-24PK-R2

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  • Anonymous
  • 2/3/2016 9:53:10 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsWas great while it lasted

Pros: Ultra quiet, ultra cool.

Cons: Lasted a whopping months.

Other Thoughts: My 1 egg rating is NOT a reflection of Newegg it is a reflection of the poor customer service of Coolmaster . After 8 months of not, I repeat NOT, hard use this pump dies. It is covered under warrant however it took Coolmaster 2 months to inform me that no replacement would be issued because they were out of stock and this was only because I contacted them.
The only saving grace is I should be getting a refund. We'll see if that happens in the 5 to 7 day time frame I was told.

Manufacturer Response:

We do apologize for the trouble you are having. Please contact customer support at 888-624-5099 for
updates regarding your refund.

Respectfully,
Nichole CMUSA Support

Did you find this review helpful? Yes No

  • Martin S.
  • 2/2/2016 7:24:19 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsNot really good water cooling

Pros: look nice, with blue led en water block.

Cons: i have a i7-4790k and this water cooling ans i get 70 to 80 degrees it really hot for a water cooling when i'm a overclock at 4.40Ghz

Did you find this review helpful? Yes No

  • Anonymous
  • 1/23/2016 8:07:19 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsReturned it for a refund, thanks to Premier I didn't lose money

Pros: -Thin Radiator
-If blue is the color of your build, the led will be nice

Cons: -I had a noisy pump
-I had a hard time with the installation, the waterblock would not fit properly on the CPU so I had stupid high temps within seconds of turning my PC on. I had to cut out cardboard spacers to put under the backplate so the block would make appropriate contact with the CPU
-Once I managed to install it properly, I had 60C temps under full load on stock 3.5 GHz clocks on my i7 3770, but with my boosted 4,3GHz I shut down my stress test before it could go over 85C to not damage my cpu

Other Thoughts: Overall I'm disapointed. I bought this cooler to replace my old H80 who started to make weird noise recently and that I lost the serial number to RMA, but it was still quieter than this 120V. Maybe it was defective, but even if it was quiet, it wasn't powerfull enough to cool down my CPU. I'm currently using my old H80 while I shop for a new cooler.

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  • Marek K.
  • 1/23/2016 3:18:31 PM

2 out of 5 eggsWorks, but doesn't do the greatest job...

Pros: -No leakage
-Came with all parts neccessary for different mobos
-Instructions were clear enough

Cons: -Mounting solution for LGA1150 is fairly difficult.
-When torquing down all the screws, the pins designed to stay in place let loose and spin freely, so the mount isn't fitted securely.
-90C temp under almost full load on a 4790K.

Other Thoughts: -Paste is included, so there's that.

Did you find this review helpful? Yes No

  • Anonymous
  • 1/22/2016 4:58:16 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsWorks Great - Quiet - Easy to setup

Pros: -Quiet
-Easier then expected to setup
-Keeps my AMD FX 6300 around 38 C even after hours of gaming

Cons: - Hoses are a little awkward and stiff

Other Thoughts: - Would recommend

Did you find this review helpful? Yes No

  • Troy W.
  • 1/18/2016 8:16:49 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGreat Little Cooler. Perfect into to AIO

Pros: Price was amazing. Performance exceeds the price and it runs very quiet. Low profile.

Cons: I wouldn't overclock with this, but for stock speeds, this little guy excels.

Other Thoughts: Plug pump into System fan and make sure BIOS is sending 100% at all times.

Did you find this review helpful? Yes No

  • Marise D.
  • 1/12/2016 4:03:15 PM

2 out of 5 eggsAbnormal noise

Pros: it was a good pump, compact to fit 80% of cases as its a standard 120mm fan size (plus 20mm for the radiator tanks) it kept pc cooled, and fairly decent price for the parts with a good fan.

Cons: the moment i started the pump it rattles and clicks violently, sounds like ball bearings hopping in the case.

very noisy pump, it runs very rough and jittery from the rattling noise and you can hear the water surging threw the pipes.

system still runs but is too scared to use, need a full refund on this product.

Other Thoughts: this pump falls under the "you get what you pay for..." quote as its cheap pricing is noted by the pump noise. the kit itself has good parts but the pump itself not a great quality.

gonna take 2 eggs off for pump problems, and 1 egg off for being faulty right out of the box.

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  • Anonymous
  • 1/3/2016 4:11:48 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggseverything was perfect

Pros: everything was perfect

Cons: none

Did you find this review helpful? Yes No

  • Anonymous
  • 12/25/2015 8:21:26 AM

1 out of 5 eggstoasted my computer - pump failed at 4 months - voided my 3 year computer warranty

Pros: for a short time i was happy that it silenced my computer significantly

Cons: now its silenced forever. wish i could give it a rating of less than 1. When I took it to the place I purchased it from, they said that because I added this inferior cooling system, it caused the components to fail thus killing my computer. I now have a lovely black breadbox valued at over $1000.

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  • Joseph F.
  • 12/17/2015 10:02:41 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAmazing for the price

Pros: - Keeps my i5-4690K at a cozy 75c under max load at 4.7GHz
- Runs fairly quietly

Cons: - Can't change the LED color
- Stiff tubes

Manufacturer Response:

We apologize for the trouble you are having with Cooler Master Seidon 120V/
Please contact us through CM Fanzone for further trouble shooting.

Respectfully,
Nichole
CMUSA Support

Did you find this review helpful? Yes No

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Cooler Master > 
Item#: N82E16835103179
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