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New York, NY

Is a CM Seidon H2O kit worth it for $25 A/R?

Newegg is selling the Coolermaster Seidon 120M H2O Cooler Kit for $54.99 with a $30 rebate for a total of $24.99. I was just wondering if its worth it since the A/R price is so low. Anyone have one? I hear its a bit loud.


Pasadena, CA
Click for full size
backplate crushing electronic components
I got in on that deal at newegg. I dont know how loud it is because i never got past installation. There are some design flaws with the backplate that didn't sit well with my motherboard, and i'd imagine it probably wont go together well with a lot of other boards either.

Here's a list of problems with the CM Seidon 120M:
1) the contact area between the backplate and the motherboard has to be clear of components. (see picture) In my case, if i had tightened it some components would be crushed.
2) the backplate is too thick, so you need plenty of clearance (higher risers) in your case.
3) the bolt will grind into your motherboard trace routes so you need to install it with an aftermarket washer.

I ended up getting a Corsair H100i that had none of these problems. I RMA'd the Seidon, even though it's only 25 bucks, because im never gonna use it.

As for watercooling in general - if you are concerned about noise then you should probably go with air. All watercoolers have an audible pump noise. It's not very loud, but it is there and you will hear it if you have low noise fans. You also have to consider the possibility of leaks.. it's just one more thing to worry about.

New York, NY

1 edit
reply to Octavean
Thanks for the input but I'm not sure if the back plate issue would apply.

Generally speaking I don't think the boards I have include surface mount components on the rear of the board. However, if I were to buy the CM Seidon H2O kit it would be for an Asus P9X79 Deluxe motherboard specifically which uses a dual latch socket design that has threaded mounting holes in the socket latch assembly not the motherboard itself. I don't think there are even mounting holes around the socket.

As for noise I was referring to reports of a loud fan.


Wait, no there are actually mounting holes in the board but they line up with the socket holes so you can't see them from the front of the board. Still there are no surface mount components on the rear of the board in the socket area. Typically I don't think most boards would have surface mount components in that area.