A Closer Look
Fractal uses a nearly all-black box with a full-color picture on the front a few features highlighted on the back. All of the specs are listed on the edges of the box.
Inside, everything Is cradled in a form-fitting tray and everything is wrapped in plastic to further protect it.
After extraction, you end up with the Lumen S28, a fair of 140mm fans, a detailed and actually useful manual, and a baggie of hardware.
The baggie of hardware includes mounting screws for the fans and/or radiator, block mounting hardware that covers almost every socket out there, extra mounting hardware for Intel’s HEDT platforms, an intel backplate, an AMD bracket, and the RGB cable for the block itself.
All models of the Lumen RGB come with Fractal’s own Aspect fans, ours with two of the 140mm version.
The fans have two cords, 4-pin Power and 3-pin ARGB, both pigtailed for easy daisy-chaining.
The block on the Lumen RGB is quite literally just a block, no pump included. The faceplate can be removed and reinstalled in 90-degree increments so that it faces the way you want in any build. If you like the satin smoke color you need to do nothing more than install it.
If you prefer to release some of those namesake Lumens, you’ll need to connected the included 3-pin RGB cable to the small port on one side.
The hose connections to the Lumen block swivel easily and can point any direction your build requires.
Everything is flexible enough you can even run both tubes in one direction and stay lower than the top of the block, great for highly compact builds that have become quite popular.
Out of the box, Fractal’s Lumen RGB has thermal paste pre-applied. This makes it easy to get up and going quickly for most users without worrying about how much thermal paste you need and how to apply it correctly.
The radiator is quite compact with small tanks on each end, another boon for SFF build lovers. Something that is out of the usual is the 3-pin fan cable hanging out of the radiator and the square area on one end blocked off.
This is actually the pump for the entire cooler and don’t worry, it sits under the hub of the fan where there is almost zero airflow anyway, you aren’t losing any noticeable performance with this area blocked off.
There are notches on each side to run the cable through without interfering with your fans or risking pinching it between the rad and case panel you mount it on.
Non-removable tubes come into the rad centered and to one side. A capped-off fill port sits next to them.
The rad itself is a fairly dense 20.5 fins per inch for good cooling performance with higher static pressure fans like the included Aspect series.
Both edges have the Fractal logo embossed in a subtle gloss black over the satin black radiator.