The NOCTUA NH-L9i-17xx is a premium low-profile CPU cooling system, the latest version of the award-winning NH-L9i low-profile CPU cooler, for Intel LGA1700 or LGA1851-based HTPCs and Small Form Factor (SFF) systems. With a height of only 37 mm, the NH-L9i is ideal for ultra-slim cases, its small size ensures 100% RAM and PCIe compatibility and easy access to socket-close connectors even on closely spaced mini-ITX motherboards. thanks to the optimized NF-A9x14 92mm fan that supports fully automatic speed control via PWM, the NH-L9i-17xx runs extremely quietly. Turbocharged with Noctua's famous NT-H1 thermal paste, the NH-L9i-17xx combines everything users expect from Noctua's larger coolers in a super-compact, premium package for mini-ITX and HTPC builds with Intel LGA1700 or LGA1851 CPUs.

New version for Intel LGA1700 and LGA1851 sockets
As the original NH-L9i for LGA1200 and LGA115x sockets has received over 200 awards and recommendations from international hardware websites and magazines, the new 17xx revision builds on the same proven heatsink design to provide excellent low-profile cooling performance for LGA1700/LGA1851 CPUs.

Award-winning NH-L9i cooler
Tens of thousands of enthusiastic users worldwide swear by the NH-L9i's quality and performance. Recommended by more than 150 international hardware websites and magazines, it is considered one of the best low-profile coolers on the market.

37mm low profile
With a thin 23mm heatsink and the NF-A9x14 low-profile fan that is only 14mm thick, the NH-L9 is only 37mm tall, making it ideal for use in compact HTPCs or small housings where there is minimal space for CPU coolers.

100% RAM compatibility
The NH-L9i has a footprint of 95x95mm, which exactly matches the forbidden zone of the Intel LGA1700/LGA1851 socket. This means that it does not cause problems with VRM heatsinks and does not hang over the borders of RAM slots, making it fully compatible with high memory modules.

100% compatibility with mini-ITX PCIe cards
On some mini-ITX motherboards, the PCIe slot is located close to the 95x95 mm slot zone. While larger coolers extending beyond this zone are likely to obscure the PCIe slot, the 95x95mm NH-L9i ensures full compatibility with PCIe cards.

Easy access to connectors near power outlets
Many low-profile coolers use larger fans or heatsinks to achieve adequate performance, but because they extend beyond the socket zone, they make it difficult or even impossible to reach near-socket connectors on closely spaced ITX motherboards. Thanks to its compact size, the NH-L9i-17xx provides easy access to all connectors and components.

NF-A9x14 PWM premium fan
The highly optimized NF-A9x14 premium fan features Noctua's proprietary AAO frame and sophisticated aerodynamic design. The NF-A9x14, which supports PWM for fully automatic speed control, enables the NH-L9i to operate extremely quietly.

Low noise adapter
The included Low Noise Adapter (LNA) allows you to reduce the maximum speed of the NF-A9x14 PWM fan from 2500 to 1800 rpm, allowing you to achieve near-silent settings with suitable CPUs that generate only a minor heat load.

Uniquely designed SecuFirm2™ fixing for LGA1700 socket (LGA17xx family)
The NH-L9i-17xx features a uniquely designed backless SecuFirm2™ mounting system for LGA1700 and LGA1851 sockets that offers extended compatibility with mini-ITX motherboards and makes installation easier than ever while maintaining reliable SecuFirm2™ quality.

NT-H1 thermal paste
Noctua's highly regarded NT-H1 is a professional TIM solution that provides minimal thermal resistance, excellent ease of use and outstanding reliability. It is chosen again and again by tuners and enthusiastic users around the world, and has become the benchmark for premium quality thermal pastes.

Soldered connection between heat pipes and slats
For many heatsinks, the fins are press-fitted to the heat pipes. Due to the different coefficients of thermal expansion of copper and aluminum, this joint can loosen over years of thermal cycling, leading to reduced performance. In contrast, the NH-L9i's fins are soldered to the heatpipes to provide an excellent heat-conducting surface that will not deteriorate even after many years of use.

6 year manufacturer's warranty
Noctua products are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the included NF-A9x14 has an MTTF rating of over 150,000 hours, and the entire NH-L9i package is backed by a 6-year manufacturer's warranty.

Specifications
- Size (form factor): 92 × 92 × 14 mm
- Speed range: 0 – 2500