Cooler Master Seidon 120XL 38

Cooler Master Seidon 120XL

A Closer Look »

Packaging & Contents

Cooler Master's Seidon 120XL AIO liquid CPU cooler comes in an average-sized box that measures roughly 28 cm in length, 26 cm in width, and 14 cm in height. The box shows what one would expect to see: relevant information on the cooler, images of its features, and a short description. The side of the box shows nothing more than an image of the cooler, with socket support shown boldly in silver. The back of the box has the sizes of the various components in millimeters, with a quick description in various languages.

The other side lists the various specifications of the Seidon 120XL, such as radiator material and dimensions as well as all the pertinent information about the two included fans. The bottom of the box lists support information for various regions should users need it. The top is left rather unadorned with simple purple color once against listing product name and socket support.


When opening up the box, I found everything neatly packaged and sealed in plastic. The pump and tubing were, of course, in a plastic bag, with the pump's coldplate protected by a plastic cover. The radiator was also placed inside a plastic bag. Overall, packaging is adequate and provides ample protection for its contents.

After removing all the contents, we can see the radiator and pump clearly. It is definitely a lot thicker than the H90 reviewed earlier and should provide fairly good cooling. The real treat here is the mounting hardware. Users will immediately notice the difference to Asetek manufactured products. It is already evident that installing and uninstalling this cooler will be far easier than with products by the competition.

The assortment of screws and small parts used for the various mounting options. I am very happy to see the PWM Y-cable which some products, like Corsair's H110, don't include. Seeing Cooler Master provide one is a nice touch. We run into something new again: The Seidon 120XL is the first AIO liquid CPU cooler I have reviewed that offers rubber gaskets for the fans. These offer some noise reduction related to rattling and are, to say the least, a nice addition. The fans are, in the meantime, standard fare, making use of a rifle bearing. This is just a small step up from a sleeve bearing; mounting orientation doesn't limit effective lifespan. That said, I feel Cooler Master could step it up a bit by including ball bearing fans or nice hydro dynamic bearing fans instead, especially for this price range.

Common parts supplied for mounting include:
  • 8x Fan screws
  • 4x Stand offs for LGA 2011
  • 4x Stand offs for other sockets
  • 4x Metal mounting screws
  • 4x Short screws
  • 2x 120 mm fan
  • 2x Rubber fan gaskets
  • 1x Bracket for Intel
  • 1x Backplate for Intel
  • 1x Bracket for AMD
  • 1x Backplate for AMD
  • 1x Tube thermal paste
  • 1x PWM Y-cable
  • 1x Philips head adapter
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