NL-ACF1

After spending time with the Noctua LC1, it's clear that the company's first all-in-one liquid cooler has been worth the wait. By combining Asetek's highly refined Emma V2 platform with Noctua's own engineering expertise, the result is a premium cooling solution that excels in the areas enthusiasts care about most. From the exceptionally straightforward installation process and comprehensive accessory bundle to the clean, RGB-free aesthetic and industry-leading six-year warranty, the LC1 delivers a polished experience from start to finish.

The standout feature, however, is undoubtedly its acoustic performance. Although our testing primarily focused on the Balanced operating mode, similar behaviour can be achieved in both Quiet and Manual profiles. In Balanced mode, the pump dynamically adjusts between approximately 1300 RPM and 2800 RPM, with the majority of the cooler's noise output coming from the pump rather than the fans. Even so, noise levels remained remarkably low at just 34-36 dBA, resulting in a cooling solution that is genuinely difficult to hear within a typical gaming or workstation environment.

Performance is equally impressive, and the included trio of NF-A12x25 G2 fans plays a major role in that success. Widely regarded as some of the finest radiator fans available, the three NF-A12x25 G2 units complement the Emma V2 platform perfectly, delivering exceptional airflow and static pressure without generating excessive noise. While the LC1 did not claim the absolute top spot in our thermal charts, it consistently finished near the front of the pack and demonstrated cooling capability that comfortably competes with the best 360mm AIOs on the market. What ultimately sets it apart is that it achieves these results without the acoustic penalties often associated with high-performance liquid coolers. Many competing products can match the temperatures, but few can do so while remaining this quiet. The combination of strong thermal performance and class-leading acoustics makes the LC1 one of the most well-rounded coolers we've tested.Another noteworthy aspect is the optional NL-ACF1 auxiliary cooling fan. While not essential, it can be a worthwhile upgrade for both performance enthusiasts looking to keep motherboard power delivery and near-socket components as cool as possible, and noise-conscious users who want to optimise their systems for maximum quietness without allowing surrounding components to exceed comfortable operating temperatures. It adds another layer of flexibility to an already highly refined platform.