Noctua doesn't do liquid coolers. It still doesn't today, though over at Computex it revealed a prototype for a liquid cooling product. Naturally, the air cooling company is going about it in an entirely different way to the norm. Its liquid cooler has no pump.
Noctua's design hopes to offer effective cooling despite lacking this one key component. Rather than a pump above the cold plate or embedded beside the radiator, Noctua's design harnesses a two-phase thermosiphon.
