The Noctua NL-LC1-42 is Noctua’s flagship 420mm all-in-one liquid cooler, bringing the company’s legendary quiet-cooling expertise to closed-loop liquid cooling for the first time. Built on Asetek’s proven Emma V2 platform and paired with Noctua’s custom NL-PNA1 pump noise absorber, it delivers class-leading performance-to-noise efficiency at the highest heat loads. Available at Grey Technologies (Grey PC), Bahrain with local warranty.
Key features
- 420mm radiator with three NF-A14x25 G2 140mm PWM fans (speed-offset for reduced noise)
- Asetek Emma V2 pump platform — industry-leading performance and reliability
- NL-PNA1 pump noise absorber: 3-layer acoustic soundproofing + tuned-mass damping
- 3-mode pump switch: Quiet, Balanced, and Manual RPM control
- SecuFirm2+ Torx-based mounting system, supports AMD AM5/AM4 and Intel LGA1851/1700
- Noctua NT-H2 thermal compound included
- Optional NL-ACF1 auxiliary fan for VRM/RAM/M.2 airflow (sold separately)
Specifications
| Cooling type | 420mm AIO liquid cooler |
| Radiator | 420mm |
| Fans | 3x NF-A14x25 G2 140mm PWM (speed-offset) |
| Pump platform | Asetek Emma V2 with NL-PNA1 noise absorber |
| Pump modes | Quiet / Balanced / Manual |
| Socket support | Intel LGA1851/1700, AMD AM5/AM4 |
| Mounting | SecuFirm2+ (Torx-based) |
| Thermal compound | Noctua NT-H2 (included) |
| Warranty | 6 years |
| Model | NL-LC1-42 |
Questions & Answers
How is this different from Noctua’s air coolers?
It’s Noctua’s first AIO liquid cooler line, combining a 420mm radiator with the Asetek Emma V2 pump platform for higher cooling headroom on extreme heat loads than air coolers can typically provide, while keeping Noctua’s signature low-noise operation.
What makes the pump quiet?
The NL-PNA1 pump noise absorber uses 3-layer acoustic soundproofing and a tuned-mass damper to reduce both air-borne noise and structure-borne vibration from the pump.
Can I control the pump speed?
Yes, a built-in mode switch lets you choose Quiet (near-inaudible), Balanced (extra headroom), or Manual (full RPM control).
Does it come with thermal paste?
Yes, Noctua’s NT-H2 thermal compound is included.
What sockets does it support?
Intel LGA1851/1700 and AMD AM5/AM4, via the SecuFirm2+ mounting system.
How long is the warranty?
Noctua backs the NL-LC1-42 with a 6-year manufacturer’s warranty.
