Galax has expanded its lineup of NVIDIA GeForce RTX 4090 graphics cards with the introduction of a new Hydro model. The Hydro model is available in white or black, with the black version set to be released at a later date. This new design features a 360 mm AIO liquid cooler with a triple-fan setup and 50 cm long tubing, which is a first for Galax. All of Galax's previously released GeForce RTX 40-series cards have been air-cooled. The product page states that a full-cover aluminium alloy backplate is attached to the Hydro model.

It is unclear where the RTX 4090 Hydro cards rank in Galax's model lineup, but they appear to be positioned below their flagship air-cooled HoF (Hall of Fame) sibling. The HoF boasts a 2595 MHz boost clock and a 1-Click OC Clock of 2610 MHz (enabled via Galax's software). In comparison, the Hydro model has a 2580 MHz boost clock, which aligns it with the 4090 SG 1-Click OC (air-cooled) variant. However, the specification sheet indicates that the Hydro model does not have Galax's software-enabled overclock feature.