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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
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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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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Showing 192 of 192 reviews - Clear Filters

  • 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

  • KALEB D.
  • 1/23/2015 5:22:26 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsWell, it works.

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

Pros: Keeps A10-7850k OC'd to 4.7 at 34C idle. Tiny blue light on block. Very quiet unless you ramp up the fans. Lots of parts in the box for nearly any setup.... except mine.

Cons: Even though it says it is a double 120mm rad IT WILL NOT FIT IN A STRICT 120MM SETTING. there are metal bits that hang off the top and bottom of the rad making it stupid hard to find a spot to mount. I had to rig it in the front of my case where drives normally go just so it would fit. Replacing the coolant voids the warranty, if I didn't think I might need the warranty I might switch the coolant to mineral oil. Hoses are a bit short and not flexible enough.

Other Thoughts: RMA'd the first one a week after installation due to what sounded like a tiny train in my case. I was a fool, should've upgraded my case to a train case. Anyways RMA was easy got the new one have had it for nearly 5 months and no issues. Threw a liquid metal pad on it and that helped thermals a bit.

Manufacturer Response:

Dear Customer,

We sincerely apologize for the trouble you had with our cooler. We are a bit confused regarding your review. The cooler in question is a 240mm radiator, but you referred / mentioned that you weren't able to mount it onto a 120mm port. Would you be able to contact us to get more information regarding your review so we can be of assistance?

Respectfully,


CMUSA Support.

Phone:
1-888-624-5099

Site:
http://account.coolermaster.com

Did you find this review helpful? Yes No

  • Anonymous
  • 1/20/2015 9:06:41 PM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggs

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

Pros: Kept my i5 4690K at 4.5Ghz @ 1.350 Volts a steady 18-22° C cooler than my Hyper 212 Evo. Very good radiator and pump after 2 days of use.

Cons: 1 of the fans was grinding loudly and the other squeals loudly. It's not worth it to disassemble the whole thing and mail it back for 2 $3 fans.

Other Thoughts: Fits well front mounted in a NZXT H440. Fairly easy installation.
I am only rating 3 stars for the fans not working.

Did you find this review helpful? Yes No

  • Brandon G.
  • 1/14/2015 10:20:38 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsCooler

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

Pros: I have been using this with an FX 8350 Black Edition 8 core. The Temperature holds at 35 C in a push configuration under load. It has been a great cooler. Been using mine since August of last year. I have not overclocked this one.

Cons: I have no bad things about this setup

Did you find this review helpful? Yes No

  • Jacob T.
  • 12/31/2014 5:50:18 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsLowered my temps

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

Pros: Significantly lower temps than my air cooler or H60. Lots of screws for different pump configurations.

Cons: Pump noise. It's not super loud but I'm into a quiet PC. Sometimes it's louder than others, I have no clue why. I have the pump set at 1,000 rpms and it's decently quiet. Same with the fans, need to run them at a low speed to keep the sound low.

Other Thoughts: I have them on the top of the case on the floor so I can hear it more than most. (Fractal R4) Once in awhile it makes a slurping noise, especially when changing pump rpms around.

Did you find this review helpful? Yes No

  • Carl M.
  • 12/30/2014 4:39:37 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsWas fine for first 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: Loved this right out of the box. I'm using it with a 220W TDP processor (FX9590), and it worked well for a while.

Cons: One of the fans just died, about 4 months later. I sincerely would like to say that this is a good product, but given the short life of the fan, I cannot.

Other Thoughts: You should get something else. If you do get this, buy two extra fans from another manufacturer and run it in push pull with the pull set on molex 12v - at least that way you have a fail-safe and can be confident that your hardware is safe.

Manufacturer Response:

Hello Carl,

We apologize for the trouble that you are experiencing with the Seidon 240m. The Seidon 240m does have a 2 year warranty.

Please contact us so that we can ship you a replacement fan.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • michael s.
  • 12/26/2014 12:58:37 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsChilly cooler

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

Pros: I'm running this on an 8 core AMD FX processor can't get it even remotely hot. I ran a stress even after an hour the highest the temps got too were 52c. The fans are very quiet and used in conjunction with ASUS fan control you can't even hear it running. not much to the install and if you've ever messed with liquid cooling in the past this is by far a breeze.

Cons: Although this is not my first liquid cooler install if you are not comfortable with building computers I would not recommend this product. The Screws that attach to the plate on the back of the mother board are spring loaded and are very stiff, I could see someone with minimal knowledge slipping with a screw driver or over tightening.

Did you find this review helpful? Yes No

  • Sarah N.
  • 12/14/2014 5:40:00 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGood Cooler

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

Pros: Keeps my Overclocked Intel 4670K @ 4.6ghz while playing WOW(which is cpu heavy) at max graphics with an R9 280 @ 45oC. Idle at 25oC. fans speeds i keep around 30% unless its gaming which its around 45-55%

Cons: There is a FILL Valve which is facing the pump on the radiator. I cant place it face down with pump going down in my case AT the top of the case unless i place it below the 200mm fan because of it. I can place it the other way but the way the tubes bend is a way i dont feel comfortable with.
MY case is a thermaltake v Core 71( massive case with lots of cooling options)

Other Thoughts: Had a Coolermaster hyper 212 evo with 2 JETFLO led blue fans(95CFM EACH) which kept it at 65oC while gaming and 35-40oC at idle. Very happy with it as well. it was on sale for $94 plus a $25 mail in rebate.
Other than the little issue with the fill valve, which im pretty sure is just the same with all the other AIO Liquid Coolers, is very minor. Actual product has a quality feel to it. I really like the BLUE led on the pump., goes with my Black and Blue theme.

Did you find this review helpful? Yes No

  • Yang Q.
  • 12/14/2014 8:35:53 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsloud, don'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: my case , fans,all use cooler master. but ,this one only 2 weeks, 2 fans make loud music.

Cons: none

Manufacturer Response:

Hello Yang Q,

We apologize for the trouble that you are experiencing with the Seidon 240m. Please contact us for further trouble shooting.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

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

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Item#: N82E16835103181
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