A Closer Look

The 280 mm radiator Deepcool is using includes their Anti-leak technology, but is otherwise a plain boxy black aluminium radiator. It has an FPI (fins per inch) of 18. This is a bit lower than the average, which tends to be around 20–21 FPI. Still, that isn't bad since the lower FPI means the fans will have an easier time forcing air through the radiator as 140 mm fans typically have lower static pressure than the more typical 120 mm offerings. In regards to the tubing, it measures in at 380 mm with Deepcool opting to sleeve it for improved aesthetics.


The fittings are of the swivel type and have a good range of motion since they are arranged horizontally rather than vertically. As for the pump itself, it at first glance looks to be a standard offering with its sleek cylindrical shape and ARGB LEDs. However, that is not the case as the Castle 280EX's defining characteristic is that you can unscrew the top cap to reposition the internal logo or replace it with a blank. Users could also likely create their own with a bit of DIY effort. As for the base, it comes with thermal paste pre-applied, but after removing it, I found the base to have a smooth finish with only some lightly visible machining marks. It is also somewhat reflective, so while not a mirror finish, it is not nearly as rough as some of its competitors.


The TF140S fans with model number DF01402512CM have a PWM range of 400–1600 RPM with a listed maximum airflow of 97.03 CFM. When it comes to the design, the fan blades have cutouts that should improve both static pressure and airflow, which I have no way to really verify. However, if the model does well as a whole, it certainly means the fans aren't bad. It should also be noted that Deepcool stuck with a solid fan frame that should reduce air blowback and improve performance.