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Cooler Master > 
Item#: N82E16835103195

Cooler Master Seidon 120V – Compact 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 Dim. 120 x 120 x 25 mm (4.7" x 4.7" x 1")
  • 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.
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Learn more about the Cooler Master RL-S12V-24PK-R1

General

Brand
COOLER MASTER
Series
Seidon 120V
Model
RL-S12V-24PK-R1
Type
Liquid Cooling System

Block

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

Pump

Pump Noise
<23 dBA

Radiator

Radiator Material
Aluminum

Fan

Fan Dim.
120 x 120 x 25 mm (4.7" x 4.7" x 1")
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 - zero maintenance for years.

Optimized pump and water block provide excellent water flow and system performance.

Special designed 120mm radiator provides superior heat dissipation performance and fits in most cases internally and externally.

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

Blue LED indicator lights up when operating.

Quick Info

Warranty

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


Customer Reviews of the Cooler Master RL-S12V-24PK-R1

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Showing 185 of 185 reviews - Clear Filters

  • Shawn N.
  • 10/20/2014 1:12:52 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat Cooler

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

Pros: Inexpensive
Easy to Install
Keeps my CPU around 30C

Cons: The plasic clips to hold the standoff are easily broken

Other Thoughts: This cooler is on par with any other brand of Closed Loop Coolers. I got mine for $25 dollars with promo and MIB. No brainer

Did you find this review helpful? Yes No

  • Nicholas B.
  • 10/19/2014 9:21:44 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

3 out of 5 eggsPump noise??

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

Pros: It does its job well keeping the cpu cool, temps stayed below 50 most of the time.

Cons: I've had issues with the pump being loud ever since I installed it, used to be just on startup. Now it's a constant whirring grinding sound that I can not get to stop. I've been told the pump has to be plugged into a fan connector that's not being controlled so it runs at full power, but the higher the rpm it runs at the louder it gets and it actually sounded better when being controlled as the noise only started when the cpu was under load. Now over time it's become a constant noise that I can't stop no matter what I do. It's still techinically cooling the cpu but I refuse to use something so loud and obnoxious.

Other Thoughts: Only got it because it came with the CM 690 III case. Idk if it's under warranty or not.

Did you find this review helpful? Yes No

  • Anonymous
  • 10/15/2014 7:50:43 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsPUMP FAILED!!

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

Pros: none....it cooled my overclocked fx8350 well when it worked.

Cons: After 45 days of use the pump has failed but the blue light is still on indicating its getting power. temps jumped crazy high

Other Thoughts: Installed my spare air cooler to get me by until I can get a better water cooler.

Manufacturer Response:

Hello William E,

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

Please contact us so we can get you a replacement.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Kevin P.
  • 10/11/2014 11:08:54 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat Cheap Cooler

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

Pros: Great all-in-one cooler. I had to use the thermal grease that came with it because I couldn't find my arctic silver. Keeps my Phenom II X4 945 at 13-14c idle(ish, Spotify, Skype, HWMonitor, Steam, Google Chrome)
I wonder what it could get it to with arctic silver.

(P.S.: It's not overclocked)

Cons: The fan and radiator were easy to install, but the pump was kind of irritating, and I had to get someone else's help with installing it. The thermal grease they give you is very runny at first, I forgot to squeeze out the watery bit, and it ended up drooling on my north bridge a bit. Though, it's still a good cooler.

Oh, and a few of the fins were bent on the radiator, but they weren't exactly crushed, so I don't care too much about that.

Though I won't dock an egg for it.

Other Thoughts: I put the CPU in a MSI 970 GAMING board in a Corsair 230T Orange case.

Did you find this review helpful? Yes No

  • Andrew E.
  • 10/10/2014 11:52:13 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsCooler Master Seidon 120V

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

Pros: This cooler has been great so far. It has dropped my CPU temperature enough to allow me a little bit more overclocking head room. For the price I paid after rebate this cooler was a steal.

Cons: Fan could be quieter, but for an entry level water cooling solution its hard to beat.

Other Thoughts: I finally decided to give water cooling a try, and I'm glad I did. The cooler installed easily on my older 1366 motherboard with I7 940 CPU. Dropped my previous full load temperatures by about 20C.

Did you find this review helpful? Yes No

  • Maurice M.
  • 10/9/2014 9:09:30 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggspump failed!?

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

Pros: none

Cons: After 1 day of use CPU temperatures on my i3-4150 are at 100 Celsius! Well outside of the operating range of the cpu. This is scary. Returning asap.

Manufacturer Response:

Hello Maurice M,

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

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

  • Martin T.
  • 10/9/2014 10:15:12 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsSatisfaction

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

Pros: Très facile d'installation avec le bon type de boitier, prends peu d'espace, très silencieux et maintient le processeur à une température très optimale.

Cons: Il faut faire attention à avoir un boitier permettant d'accepter le ventilateur qui est toutefois assez gros, par contre n'importe qui bricolant un peu, peut arranger le compartiment du boitier.

Did you find this review helpful? Yes No

  • Ron S.
  • 10/9/2014 1:28:52 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsLowered my temps down by 20C

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

Pros: My oem cooler wasn't doing justice. My Phenom X2 1100T was putting out 40C idle and over 60C whenever I play games like Guild Wars 2. After installing the CM Seidon 120 V and switching the oem fan to a Delta server fan, my idle temps are at the high teens to the low 20s. I've never seen my cpu as cool as that before. While playing Guild Wars 2, it jumps up to the 40s and I don't have to take the side of my case off to cool it.

Tower: Inwin Q500N
Mobo: Gigabyte GA-890GPA-UD3H
CPU: AMD Phenom X2 1100T BE
GPU: XFX 6950 1GB
HDD: Seagate Barracuda 1TB

Cons: One of the screws was loose when I installed the cooler. Even though I tied the nut down as hard as it can go, the screw was still loose.

Some people might have to pull the mobo out to replace the rear cpu plate which can be a hassle. It would have been easier if you can just screw the cooler on the original plate. Less material to be wasted :)

The instructions were a bit confusing. At first I thought I bought something at IKEA since the instructions were basically pictures and no words lol I went on Youtube to search for instructions on how to install.

Also, the person who shipped the product dropped off my package to the wrong apartment but luckily the person who lived there dropped it off at my door later in the evening. Of course the local mailman dropped off mail at the wrong box and the pizza delivery guy could never find my apartment so I'll let this pass for now lol

Other Thoughts: I love this cooler so much that I'm planning to buy another one for a portable computer mod. It's the lowest priced liquid cooler on the market right now. Great for people who want's to try out liquid cooling for the first time.

Did you find this review helpful? Yes No

  • Ross M.
  • 10/6/2014 5:27:01 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsKeeps everything cool, but with a downside

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

Pros: Pretty easy to install if you read the instructions right.
The tubes are a good length to mount on the top or back of case.
The power for the pump is a good sized cord.
Keeps my processor cool.

Cons: The pump makes a loud rattling noise, but it still works.
The pump sometimes won't start (no noise) but the blue light is still on.

Other Thoughts: Good if you don't get a defective one.

Did you find this review helpful? Yes No

  • Paula H.
  • 10/3/2014 2:38:45 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

2 out of 5 eggscooler Master Fan System

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

Pros: looked lit a nice system if you were building a custom tower, but not for a package deal

Cons: way too large to fit into an HP Pavilion Elite HPE-000
tower

Manufacturer Response:

Hello Paula H,

We apologize for the trouble that your experiencing with the Seidon 120v. Unfortunately not all cases will support liquid cooling even if they have a 120mm fan location.

Please contact us in the future so we can help recommend a compatible cooler.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

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Item#: N82E16835103195
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