Noctua is preparing to launch a thermosiphon-based all-in-one (AIO) liquid CPU cooler in the second quarter of 2026 [1].
The move marks a significant shift for the Austrian company, which has historically focused on air cooling. By entering the AIO market, Noctua aims to provide a high-performance alternative to traditional liquid coolers that is quieter and eliminates the mechanical failure points associated with standard pumps [3, 5].
Central to the new design is thermosiphon technology. Unlike conventional AIOs that rely on a pump to circulate coolant, a thermosiphon uses natural convection to move heat. Early testing of the prototype indicates that its performance is neck-and-neck with a normal AIO [3].
Noctua first showcased the prototype at Computex 2024 in Taipei and during a separate event in Japan [2, 4]. These demonstrations allowed the company to gather data on the pumpless system's efficiency before moving toward mass production.
To accommodate various PC builds and thermal requirements, the company plans to offer the cooler in three different radiator sizes [1]. The lineup will include 240 mm, 360 mm, and 420 mm variants [1].
Recent reports indicate the technology is now ready for production [5]. This status ensures the company can meet its scheduled release window for early 2026, coinciding with the lead-up to the next Computex event [1].
“Noctua is preparing to enter the AIO liquid-cooling market in Q2 2026.”
The introduction of a viable thermosiphon AIO could disrupt the liquid cooling market by removing the pump—the most common point of failure in traditional AIO systems. If Noctua can maintain performance parity with pumped coolers while reducing noise and increasing reliability, it may shift consumer preference toward passive circulation systems for high-end CPUs.
