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Item#: N82E16835103179

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  • Reviews

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

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

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

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  • Jesse B.
  • 5/1/2016 1:20:18 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs

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

Pros: Works great, very cool. seal coolant

Cons: A little stiff,hoses could be a bit more flexible.

Other Thoughts: I have had this cooler for over 3 years now and it is fantastic. I us it with a AMD FX-4100 Zambezi Quad-Core 3.6GHz overclocked to 4.2 and it stays around 27c while gaming.

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  • Rick K.
  • 4/23/2016 3:47:01 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsCouldn't be happier after using for 6 months.

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

Pros: Perfect for quiet PC build.
Great performance - consistent low cpu temps at stock speed allowing lower fan speed, i.e. less noise.
Good looking component - nice styling
Easy Installation
Reasonable price

Cons: Fan is loud at full throttle, but this not a problem at stock CPU speed.

Other Thoughts: Product is mounted in a Corsair Carbide 200R case, AsRock z77 Extreme 4 motherboard, i7-3770K cpu in the single fan pull configuration on the rear. Stressed tested the cooler at 4.6Ghz without problems. I have no need to overclock and run the CPU at the factory set speed and the efficiency of the cooler allows me to lower the fan speeds quite significantly. Radiator fan is connected to CHA FAN 2, while the cooler pump is connected to the PWR FAN which is an always on constant power. Other case fans consist of a front intake fan and a single outtake fan at the top. All cooling fans are Gelid Silent 12 120mm. All my temps are generally at 35°C or slightly below. I have covered the unused fan cut-outs with soft black vinyl shelf liner attached with double-sided adhesive tape. The computer sits and runs very quietly on my desktop.

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  • Jason E.
  • 4/21/2016 9:08:01 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWorks well, except for the fan

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

Pros: All-in-one design, no need to add water or prime the pump, works with a number of types of processors making it versitile, COMES WITH THERMAL COMPOUND (since it didn't say that in the description)

Cons: COMES WITH THERMAL COMPOUND SHOULD BE ADDED TO THE DESCRIPTION and the fan that is included is junk!

Other Thoughts: UPDATE AFTER 2 YEARS: The fan that comes with this is junk! Mine made this horrible loud whirring noise until I pushed the center sticker while it was running to make it stop. Eventually, that doesn't even work...so buy a better fan when you get this!

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  • mark g.
  • 4/9/2016 8:23:05 PM

3 out of 5 eggsstill running for almost 3 years now..hope it doesnt die soon though..

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

Pros: pretty easy to install
not bad for the price but recommend better..
also been running since early 2014 and still going strong

Cons: its a bit noisy, but its keeping my temps down so it works but it is rather loud and kinda eliminates the purpose of liquid cooling considering you buy liquid cooling to help keep noise down.....

Other Thoughts: wouldnt recommend and id listen to the other reviews avoid this one...im currently just waiting for mine to die

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  • samuel r.
  • 3/22/2016 3:12:46 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsKeeps my A10-7850k cold

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

Pros: - Well A series Apu's are knowned to run a little Hot , well This product work perfectly , keeps my hot A10-7850k OC 4.2ghz Under 60C :)

So i'm very satisfied with the product.

Easy to install, Nicely built , Thx Coller Master

Cons: none so far

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  • David G.
  • 3/17/2016 10:35:41 AM
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggs

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

Pros: -Easy Quick Install
-CoolerMaster's Excellent customer service
-Brought temperatures from 32C (old liquid cooler) to 19C

My liquid cooler messed up and caused my cpu temperature to run at a dangerously high 65C when idle. This fixed that problem and gave me better temperatures then my other liquid cooler when it was brand new. I had never seen my CPUs temp under 28C, this brought it down to 19C.

Cons: -Terrible Customer Service
-Bought 2, both broke within a year took me 4 months to get one RMA'd and I'm still waiting on the other. Cooler Master is ignoring me and I'm constantly calling them. They have received my product and had it in their office or whatever for almost 5months.. They pretty much just stole from me.

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

  • Robert S.
  • 2/29/2016 9:28:58 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsSolid

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

Pros: Been using in 2 PC builds for 6+ months now and everything is solid. Installation was easy.

Cons: None that I observed although pay attention to installation instructions so you don't install backwards.

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1 out of 5 eggspump failure

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

Pros: this is an update.
it did keep my cpu cool.
I bought 2 and one is still working.

Cons: dead after one year and ten days. Cooler master support is out to lunch. these units come with a 2 year warranty that I cant use because they wont let me sign up to fan zone. I'm in a constant loop of sign up, no activation email, resend email, dead link in resent email, copy and paste in browser, my activation is complete, sign in and no account exists.

Other Thoughts: I would not recommend this unit anymore.

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

  • Mark G.
  • 2/21/2016 2:06:36 PM
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsLasted only as long as the warranty!

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

Pros: Cools well when it works.

Cons: Lasted a little over 2 years before it died on me. Just long enough to be out of warranty. Figures! I expected better from $120 cooler that cost as much as the actual CPU I put it on!!!

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  • Kyle P.
  • 2/19/2016 11:02:26 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsExcellent Product, Excellent Seller

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

Pros: Price was outstanding for class of product. The fan is relatively quiet; it produces no more than a low hum after overclocking the cpu (5930k 3.5 Ghz went to 4.6 and only running around 50-55 degrees Celsius at a full load in stress tests and only 45 degrees at work load for 4-5k video editing). About as standard/easy as it gets for installation and even includes a bit of thermal paste that should last a few cleaning cycles should you feel the need to tamper with the hardware after initial install.

Cons: So far, nothing to complain about: it runs without a hitch in a hackintosh/dual boot machine.

Other Thoughts: Will update if any issues arise although it has been a couple months to date already so I expect this product to be of trustworthy quality across the board.

Also worth mentioning that shipping was quick and well protected (I am not a member qualifying for expedited shipping and I still received the product within four days after purchase).

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

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Item#: N82E16835103179
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