Although the Seidon 240M definitely looks very similar to most pre-fabricated water cooling kits, there are several subtle differences. Cooler Master went with thin corrugated plastic tubing, claiming that it is more reliable and less prone to moisture absorption than rubber tubing; we cannot verify either claim but it surely is harder to turn. The length of the tubing suggests that this kit has been designed for the radiator to be installed at the top of a case, as it may be too short for a front panel installation in many large cases.
This system comes pre-filled with the necessary cooling liquid. There is a tap on the radiator, which Cooler Master sealed and not one but two stickers warn the user that tampering with it will void your warranty.
The radiator of the Seidon 240M is the classic “Black Ice” dual fan radiator which we have being seeing for nearly a decade now. It is a lightweight, compact and easy to produce design which makes it ideal for use in computer systems. Quality-wise, the body of the radiator is solid but the fins are thin and flimsy, making them easy to bend if hit. We should also mention that, despite the use of the very popular radiator, the Seidon 240M is not an Asetek or CoolIT design like most pre-fabricated water cooling kits.
The circular assembly houses both the copper water block and the low profile liquid pump. It has the company logo printed on it and there is a blue LED indicating whether the pump is functioning correctly or not. The pump is powered by a typical 4-pin CPU fan header, which allows for speed control through the motherboard’s BIOS as well. The corrugated tubing is attached using 90° fittings which can turn some degrees towards either side.
The copper base of the water block is made out of copper, while the rest of the assembly is plastic. Several “tamperproof” triangular screws hold the assembly tightly together. The base is flat and very smooth to the touch; however, it is not nearly machined down to a mirror finish and machining lines can be seen with the naked eye.