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Item#: 9SIA6J33291639

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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  • Evan H.
  • 12/16/2015 6:47:02 PM
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsDidnt last as long as i had hoped

Pros: Bought this bad boy 9-7-13 and has kept my FX-8120 running at 18C idle and 30C load at 3.4Ghz. Small and compact and easy to install and requires zero maintenance. It was quiet....

Cons: Started making a grinding noise today while playing a game, used a stethoscope to make sure. goes away when I turn off pc, and comes back when I put pc back under load. was hoping I would get more life out of it, and the warranty ended in May of 2015. Contacted RMA service and hoping i hear good news....

Did you find this review helpful? Yes No

  • Alex S.
  • 10/24/2015 12:43:51 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsgreat deal

Pros: Got it for 50 bucks at the time.
Came with two fans.
Slim profile radiator.
Keeps amd cool and oc'd

Cons: non

Did you find this review helpful? Yes No

  • Meagan M.
  • 3/30/2015 4:01:17 PM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsGreat and compact

Pros: Very competent cooler for the space that it takes up.

Fans are excellent and the rubber gaskets are a nice touch.

The cooling performance on my FX 8350 was within a couple of degrees of my h100i and managed it in less space.

Retention setup is about the best there is on the market for all in ones.

Cons: Fans can get really loud unless controlled properly.

it isn't the best looking cooler and I'm not a fan of the stiff tubing

Can create a "Hot zone" over the power delivery area of the motherboard if mounted on the rear exhaust

Other Thoughts: While far from perfect, it's one of the best no fuss solutions when you can't fit a 240mm cooler in your case :)

Did you find this review helpful? Yes No

  • mark c.
  • 12/16/2014 4:34:07 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggscan fit in almost any case

Pros: Cools really well, have it on an FX8350. Never a temp problem, about 54C running prime95. I'm not sure how much the 2 fans add, the single fan version probably works pretty well too. Hey, I should bench mark that for temps.... Weekend project....

Cons: the double fan can be tricky to fit into your case based on clearance to motherboard, etc. But like mentioned above, the single fan variant probably works pretty well. the extra fan is probably overkill for most applications.

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  • Eric C.
  • 12/5/2014 5:11:30 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsFaulty Bearings

Pros: Keeps the cpu very cool

Cons: Begins to get very loud under heavy load
Came with faulty bearings

Other Thoughts: Spent time and money replacing fans only to finally figure out what the sound was on a youtube video.

Manufacturer Response:

Dear Valued Customer,

We apologize for the trouble that you are experiencing with the Seidon 120XL. The Seidon 120XL does come with a 2 year warranty.

Please contact us so that we can get you a replacement.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Eric T.
  • 9/21/2014 9:19:59 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsA nightmare

Pros: This Cooler look nice. The two fans conception is really smart and powerfull.

Cons: After 3 months The liquid cooler start to make sound and the pump stop and start stop .... etc..

And today the pump jammed and my computer stopped to work because now the temp is at 90 celcius...

Dont buy that go with Corsair H80i in place ... it's much better maybe 20$ more but without all the nighmare

Manufacturer Response:

Hello Eric T,

We apologize for the trouble that you are experiencing with the Seidon 120XL. The Seidon 120XL comes with a 2 year warranty so please contact us for a replacement.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Anonymous
  • 9/15/2014 4:14:05 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsGood if the pump works

Pros: Good CPU temps, silent, price.

Cons: In less than a year pump died an almost burn my CPU

Other Thoughts: Now I have to wait for RMA with my computer of, this is my first and last water cooling. Unfortunately I won’t get my money back

Manufacturer Response:

Hello Alvin c,

We apologize for the trouble that you are experiencing with the Seidon 120XL. The Seidon 120XL does come with a 2 year warranty so please contact us for a replacement.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Anonymous
  • 8/2/2014 4:49:41 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat cooler

Pros: super eficient cooler my cpu fx-8320 stay cool when im playing

Cons: The instruccions is a little complicate to understand

Did you find this review helpful? Yes No

  • Eric M.
  • 8/2/2014 11:25:19 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsDied in less than 2 months

Pros: Perfect when the pump was working correctly, silent at low RPM

Cons: The pump started to do some clicking nose in less than 2 months of use
Bad instructions manual
Mounting hole are easy to strip

Other Thoughts: I don't even want a replacement unit, I just want my money back. The fact that I will have to pay to RMA this makes me sick. I wasted 80$+ on this, I would not recommend this to anybody.

Manufacturer Response:

Hello Eric M,

We apologize for the trouble that you are experiencing with Seidon 120XL. Please contact us so that we can resolve the issue.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Gary H.
  • 7/23/2014 2:37:08 AM
  • Ownership: 1 day to 1 week

4 out of 5 eggs

Pros: Decent cooling
not excessively loud, even under load
comes with decent y adapter for the two fans to use a single fan header

Cons: very soft metal is easily stripped by the screws that come with it when installing
some what stiff tubes
very thick radiator makes it hard to install in even a full size case (at least for me) and still have good airflow over the mosfets and northbridge.

Other Thoughts: This watercooler came with my FX-9590 and had I know how iffy it was, I would have gone with the FX-9590 that's just the cpu and gone with an H100i (which I'm getting tomorrow).

I hope I can fit this cooler into my old computer case to replace the air cooler in it and put the air cooler in it in another computer over it's stock cooler.

I do know that I won't be able to fit it in push/pull though. The radiator is just too thick.

Did you find this review helpful? Yes No

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Item#: 9SIA6J33291639
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