We have already covered much of what Cooler Master has presented at CES 2026, specifically its new cases and case accessories , a bunch of beefy air coolers , and PSU tech , but the PC hardware maker has also shown off a slew of new water cooling gear at the show. The expansions to the MasterLiquid line-up mostly revolve around making the CPU liquid coolers faster, stealthier, and more customizable, and given that it's 2026, there is at least one LCD mounted to a CPU water block.

The most interesting part of the new AIO water cooler line-up has to be the new MasterLiquid Atmos II Stealth, which iterates on the Atmos II series with new waterblock cover designs, new unannounced Mobius 120 Black fans, as opposed to the Sickleflow Edge fans of the previous Atmos II coolers, and an impressively thin pump design. Currently, the additional pump covers consist of an LCD panel, a Pixel LED module, and a VRM fan, all of which attach magnetically to the top of the pump block. Much of the rest of the cooler remains the same, including the CPU block internals, which still use the Dual Chamber pump design. However, the new fans included with the MasterLiquid Atmos II Stealth operate at up to 2400 RPM, which is slightly slower than the 2500 RPM fans in the original Atmos II coolers.