Coolermaster Seidon 240V Version 3 All In One AIO Hydro Cooler

Cooler Master Seidon 240V V3 AIO Water Cooling Kit, Quiet, Compact 240mm PWM Fan/Radiator, For Intel & AMD CPUs

Cooler Master
Scan code: LN75392 Manufacturer code: RL-S24V-24PK-R1 Request call
Was: £47.48
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Delivery options £5.48 By DPD On 26th Mar 2018 DPD Delivered to your specified address. Receive SMS with one-hour delivery window. £4.79 Collect from local shops UPS and DPD Pickup Collect your parcel from your newsagents, petrol stations and convenience stores. Free Collect Instore Q-Collect Place your order online and collect from our Bolton store with Q-Collect. Weekend, timed and European delivery options are available at checkout ScanProtect protection ScanProtect Protect against installation damage for 28 days.More
Frequently Bought Together
Product Overview The Seidon 240V is the latest AIO watercooler that boasts an excellent value for performance. The compact 240mm radiator fits in virtually every case. Thanks to dual Silencio fans designed for silence, Seidon can unleash a powerful cooling storm at your command and keep it silent. Durable FEP Tubing provides the advantages of nearly no moisture absorption, high thermal stability and high pressure tolerance which all contribute to a long operating life.

• Factory filled with coolant then sealed and pressure tested - requires zero maintenance for years.
• Precision machined Microchannels maximize the water contact surface too quickly dissipate heat.
• The best optimization pump and water block guarantees the best water flow and system performance.
• Dual Silencio fans to increase the performance.
• The FEP tubing allows maximum, unrestricted waterflow and decreased evaporation rate for greater durability.
• Elegant Blue LED illumination on the top of water block. Features • Factory filled with coolant, then sealed and pressure tested - requires zero maintenance for years.
• Highly optimized pump and water block guarantees the best water flow and system performance.
• Specially designed 240mm radiator provides superior heat dissipation and fits in almost any case internally and externally.
• Dual 120mm Silencio fans with a wide RPM range to dissipate the heat silently.
• Applied micro channel technology for the best cooling performance.
• Blue LED indicator lights up when it is operating.
Cooler Specifications
Edition Seidon 240V
Cooler Form Factor 240mm All-In-One Hydro Cooler
Cooler Features
  • Aluminium Fins
  • Copper Base
Socket Compatibility
  • 1150
  • 1151
  • 1155
  • 1156
  • 1366
  • 2011
  • 2011-3
  • 2066
  • 775
  • AM2
  • AM2+
  • AM3
  • AM3+
  • FM1
  • FM2
  • FM2+
Max. Recommended TDP  
Max. Cooling Capacity  
Fan Specifications
Included Fan Configuaration 2 x 120mm
Fan Edition  
PWM Fan Yes
Fan Bearing Type Loop Dynamic Bearing
Fan Colour Black
LED Lighting  
Fan/Pump Connectors 1 x 4-pin
Approx Fan Speed 800 - 2400 rpm
Manual Fan Speed Controller Yes
Fan Airflow 76 CFM
Air Pressure 4.8 mm H2O
Sound Level (dB) 6.5 - 27 dB
Sound Level (Sone)  
Fan Material Plastic
Cooler Material Aluminium
Included TIM (Thermal Interface Material)  
Dimensions & Weight
Fan Dimensions 120 x 120 x 25 mm
Heatsink/Radiator Dimensions 273 x 120 x 27 mm (WxHxD)
Total Dimensions  

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

24 months
Return to base
DOA Period:
28 days
RTB Period:
24 months
Manufacturer Contact Details
0871 472 4747
Customers also bought
Cooler Master Seidon 240V V3 AIO Water Cooling Kit, Quiet, Compact 240mm PWM Fan/Radiator, For Intel & AMD CPUs is rated 4.4 out of 5 by 13.
Rated 2 out of 5 by from Very poor fitment on LGA1151 Bought this as part of an 8700k build. Fitting the rad and fans is very straightforward however the documentation is very unclear regarding orientation of the backplate for LGA1151 as if you positioned it in the indicated orientation in the instructions it hits screws on the back of the CPU socket. Perhaps I was unlucky but my one was giving really bad temperature spikes and I found that the screws had bottomed out without the cooler being tight onto the CPU. I ended up removing it, bending the top bracket mounting lugs in a vice in my workshop and then refitting using AS5 compound after a good clean up, this made a HUGE difference. If you do get one of these make sure its tightening up properly on your processor. To be quite honest given the quality I would honestly spend a bit more and go for a better AIO.
Date published: 2017-12-22
Rated 5 out of 5 by from best value for money Hi i was looking some think very cheep for my Intel Core i7 7800X, average temp is 42c just above 52 when play Witcher 3 .I read lots of good and bad revive of this cooler but for this price no way can buy some think better .One minus is sometime i hear pump but its not that bad not annoying. General even with oc processor very nice perform:D
Date published: 2017-12-15
Rated 5 out of 5 by from Brilliant I choose this cooler as I had already used the Seidon 120v. With my new game max case from Scan came more space for bigger ccoolers. Fitting it was a doddle, All fittings were provided from Intel up to the latest AM4 socket. Instructions were clear and consise and made it a breeze to do. I actually changed the fans for 2 rgb fans to compliment my new case and it makes it look even better.
Date published: 2017-12-13
Rated 5 out of 5 by from Great performance for the price Works very good, my i5 8600k @4.3GHz sits at 30 degrees idle and 50-55 degrees under 100% load.
Date published: 2017-12-07
Rated 4 out of 5 by from Seems solid enough - good price Tubes are flexible enough, fairly quiet. Probably not as good as air coolers, but definitely does the job!
Date published: 2017-11-26
Rated 5 out of 5 by from Result Going from a Arctic air cooler to this my Temps haven't gone above 31 whereas before 45-50 only downside was having to modify my case to fit on top as I didn't realise the size doesn't necessarily mean room around for clearance allow at least a extra 20mm all round. For money and results excellent
Date published: 2017-11-11
Rated 5 out of 5 by from Cheap and works very good. Upgrading from hyper evo 212 to this is night and day. Before my i5 8600k @4.4GHz would run at 75-80 degrees under full load, now it reaches maximum 50-55 degrees under full load. Idle temps range from 25-30 degrees. Very satisfied with the cooling.
Date published: 2017-11-07
Rated 5 out of 5 by from Great value and performance for the money Quiet, easy to put together and half the price of a corsair h100i (my previous cooler) but with better cooling the only problem I have is the hard tubing but that's only a little gripe
Date published: 2017-09-11
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Questions & Answers

Will this fit a FM2+ motherboard

Asked by: glxcelementzz
Hello there, on the packaging it says it supports AM3+, AM3, AM2+, AM2, FM2+, FM2 and FM1 sockets. So yes it will support FM2+ :) I have not personally tested it but if it says it can on the packaging then thats a good pointer so far :) I hope this is suitable information that you wanted. If you need to know more then I suggest contacting customer services :)
Answered by: GamerJames
Date published: 2017-09-16

Will a Coolermaster Seidon 240V Version 3 All In One AIO Hydro Cooler fit in a NZXT Phantom 530 case

I want to know if the Coolermaster Seidon 240V Version 3 All In One AIO Hydro Cooler will fit in an NZXT Phantom 530 case. I have checked NZXT's site and cant seem to find any info as to the compatibility of this cooler.
Asked by: WH81
Hello there, I have had a look at pictures online of the NZXT Phantom 530 and some pictures display that yes indeed you can fit this radiator inside your case. It will fit at the top of the case. I do not know if the NZXT Phantom 530 comes with 2 pre installed fans on the top but once you have removed them then you have more than enough clearance to fit the radiator with the 2 fans that this product comes with. I have attached a picture that I have found from Google which shows you a white radiator placed on the top inside of the case. This AIO cooler I have installed into a NZXT S340 Razer Limited edition case with no worries and its much smaller in comparison to the NZXT Phantom 530. *note the picture is from Overclockers UK without the watermark but the picture should help you to where the radiator can be installed*
Answered by: GamerJames
Date published: 2017-09-16

Ryzen upgrade

I'll be upgrading to a Ryzen 5 1600x soon and I was wondering if this will fit the processor and does it come with the required mounting plate for a x370 motherboard?
Asked by: CheekyJ
Hello, This does not support an AM4 socket by default and will not ship with an AM4 bracket. Regards,
Answered by: JackB
Date published: 2017-11-29


Hi, will fit on am4 socket.
Asked by: Alexa
Hello, You would need to get a compatibility kit from Cooler Master for this to work with the AM4 Socket. In terms of AIO coolers, you would need the MasterLiquid series from this brand to get compatibility out of the box. Regards,
Answered by: MichaelScan
Date published: 2017-09-21
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Coolermaster Seidon 240V Version 3 All In One AIO Hydro Cooler
Coolermaster Seidon 240V Version 3 All In One AIO Hydro Cooler