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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
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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-S24M-24PK-R1

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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  • Benjamin S.
  • 4/13/2015 10:34:08 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat and trouble-free

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

Pros: As another reviewer noted: the Seidon 240M fits perfectly under the top case fan in the Cooler Master HAF 932 Advanced case. Just ran the mount screws down around the case fan to the radiator (now beneath the case fan) and locked it in, then mounted the radiator fans underneath it in a push/pull with the case fan. Lots of room up in the top of the case.

Cons: None yet. I only wonder when the coolant will no longer be any good.

Other Thoughts: Definitely do some research into measurements and what case you will use. A cooler this size, you want to make sure you have the space to accommodate it.

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

  • Jose Z.
  • 4/3/2015 6:42:31 PM
  • Tech Level: Average
  • Ownership: more than 1 year

5 out of 5 eggsPretty Solid

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

Pros: Never tried the stock fans. Immediately upgraded to some Corsair 2350 RPM fans and this thing has been running like a beast for over a year and half now. Running on a 4770k at 3.8ghz and idles at exactly the room's temp with fans running at 800rpm. Temps max out at about 65C under full load at 3.8ghz. Occasionally overclock to 4.4ghz and temps still max at around 75C under full load. No problems with this systems thus far.

Cons: Pretty big radiator

Other Thoughts: Don't know how this does with the stock fans, but everything else does exactly what its supposed to do pretty well.

Did you find this review helpful? Yes No

  • Jose F.
  • 3/25/2015 8:44:14 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsFirst time with this Cooling System

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

Pros: CPU temp 39c Installation of block was very easy. AM3+ Radiator had no bent fins. Quiet currently only using one fan

Cons: Both Fans do work but when I tighten one of them down the side walls of the fan came in and the blades are scraping the inside of the housing. My intent is to replace the fans

Other Thoughts: OS: ESXI 6.0
Board : ASUS Sabertooth r2.0
Ram : Vengance 24 gig 1600
Proc: FX 8320
Video: ASUS R7250X-2GD5 Radeon R7 250X 2GB Passthrough for steam stream
HD: 2 WDBLACK 2tb, 6 WD RED 3tb

Did you find this review helpful? Yes No

  • Jacob G.
  • 3/17/2015 12:33:38 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

5 out of 5 eggsGreat cooler

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

Pros: Very easy to install on my Corsair C70 case, Came with solid brackets for mounting (gigabyte 970A-UD3P / fx-6300), keeps cool: Idle is 15-18c and max 42c @ 4.9GHz , blue light isn't too intrusive.

Cons: My only con, and I debated about docking and egg or not, is that it can be a little rough to get the spring loaded screws started. I was a little paranoid that I was going to severely bend or even break my board.

Other Thoughts: I know it might be bit excessive for a FX-6300, but I plan on switching up later on.

Did you find this review helpful? Yes No

  • Patrick O.
  • 3/11/2015 11:48:25 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsWon't trust cooler master for any 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: None

Cons: Leaked within the first 7 minutes
Super loud

Other Thoughts: Had to remove my noctua NH-D15 because of the new case I bought (nzxt s340 ), so I thought I would try this out instead of Corsair. I know it at least took out my motherboard (msi z97 gaming 7) not sure if my 970 made it out alive because I have no way of testing anything (good thing I didn't install my evga kingpin 980). This sealed the deal for me with cooler master I will never buy anymore products from them in the future and I build 4-7 computers a year for the past 16 years. Good thing MSI said they would replace motherboard for 45.00 since it was due to water leak. My complete system was 1 month old.

Manufacturer Response:

Hello Patrick O,

We apologize for the trouble that you are experiencing with the Seidon 240m. The Seidon 240m does have a 2 year warrany so please contact us for a replacement.

Please let me know if you have any more questions.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Dan L.
  • 3/7/2015 10:13:58 PM
  • Tech Level: Average
  • Ownership: less than 1 day

4 out of 5 eggsInstructions are 80%

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

Pros: Keeps Q9650 (LGA 775) overclocked to 4.2GHz under 60C at full load. Fits well in HAF 932 (actually room to spare).

Cons: Missing instructions for how to assemble the fans to the radiator. Granted you can figure this out, but they include a rubber gasket that looks like it's supposed to go between the fans and the radiator, and say nothing about it in the instructions. Also make sure you use the right screws -- some look the same but are a bit longer / shorter. Use the shorter ones when assembling 2 fans.

Other Thoughts: 2009 build that used to have a liquid cooler but sprang a leak, so I put the stock CPU heatsink / fan on it a few years ago and set to stock speed. While cleaning my machine today, I removed the Q9650 stock heatsink / fan and broke its mounting tabs, so had to run out and buy something. Went with this because of the price. After installing I reconfigured previous overclock to 4.2GHz, ran some tests, and the CPU is staying nice and cool. I had plenty of room to spare, but this is a rather large chassis (HAF 932).

Did you find this review helpful? Yes No

  • marc d.
  • 2/27/2015 7:55:34 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggscool master 240m

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

Pros: Great product
re-rooted on top of cpu out of bay!
easy install
cool efficient at high clocking...
hey superbe pruduct a great price and mail in rebate. thanks.

Cons: the fans are loud like very loud
1week later the first on started to get noisy then a month later the other one so i got 2 cougars to do the job

Did you find this review helpful? Yes No

  • Anonymous
  • 2/22/2015 7:22:41 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month

5 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: Very, very silent cooling kit. Unless you crank the fans up but I like to leave it at default. Keeps my i7-5820k overclocked to 4.2ghz nice and cool at 52 degrees at maximum load. Installing this cooler was actually really simple and easy.

Cons: none

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

  • Anonymous
  • 1/26/2015 8:44:50 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsdon't buy

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

Pros: kept cpu cool

Cons: pump went out less then a year of use and cooler master rma is a joke

Manufacturer Response:

Hi Davis,

We apologize for the trouble you had with our cooler. To remedy the problem with rma or any other issue, please contact us via the method below so we can rectify the situation. We wish to make things right.

Respectfully,


CMUSA Support.

Phone:
1-888-624-5099

Site:
http://account.coolermaster.com

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

  • Carl M.
  • 1/26/2015 7:13:52 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsterrible support; fan crapped out after 4 months

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

Pros: its a liquid cooler.

Cons: One of the fans died about 4 months in. RMA process is terrible. Took a week to get the RMA application approved. CM said the new fan would ship in 5-7 business days. That was Jan 6, 2015. If this review is still here, they still haven't shipped a new fan, and a $1600 system is still sitting idle on account of their horrendous support.

Other Thoughts: build your own loop or go with any other brand. It's better than potentially having to deal with CMs customer service/RMA.

Manufacturer Response:

Dear Customer,

We sincerely apologize for the trouble. Would you be able to contact us, and ask for Patrick so we can get this situation rectified?

Respectfully,


CMUSA Support.

Phone:
1-888-624-5099

Site:
http://account.coolermaster.com

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

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Item#: N82E16835103181
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