The family of liquid cooling systems (LCS) of a closed type (note: when all the parts out of the box are ready for assembly) first announced itself in 2018, becoming an affordable alternative to much more expensive liquid cooling systems from NZXT, Corsair, Cooler Master and other well-known brands. Since then, Castle LSSs have not lost their relevance, enjoying popularity among users who know how to value savings.


In 2022, the company completely updated the range of the series, replacing the old Castle models with new life-support systems with a proprietary Anti-Leak leakage protection system, optional addressable lighting, a highly efficient three-phase motor and an unusually long 3-year warranty for such products. The Castle 2 series includes LSS of classic formats with two or three fans, as well as radiators with a length of 240, 280 and 360 mm. Unlike the first version of Castle, the second generation is equipped with processor mounts for all the latest sockets, including AMD AM4, AM5 and Intel LGA 1200 and 1700.

Compared to the more affordable LSS of the Deepcool Gammaxx series, representatives of the Castle series look more solid and presentable. For example, their ARGB-illuminated fans look really nice, and the pump is often decorated with a decorative backlit cover that creates the effect of a bottomless well. At the same time, the rotation speed range of the fans has expanded, thanks to which the turntables can be made to work more quietly, and the water pump has become almost silent.