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Noctua NH-L9i-17xx, Premium Low-Profile CPU Cooler for Intel LGA1700 and LGA1851 (Brown)
- Proven premium heatsink (more than 200 awards and recommendations from international hardware websites), latest revision for Intels LGA1851 and LGA1700 platforms
- Only 37mm height allows it to fit compact HTPC and Small Form Factor (SFF) cases, tailored footprint guarantees 100% RAM and PCIe compatibility on all ITX, Micro-ATX and ATX LGA1700 or LGA1851 motherboards
- Renowned, award-winning NF-A9x14 slim 92mm fan with Low-Noise Adaptor and PWM for automatic speed control: full cooling performance under load, whisper quiet at idle!
- Includes high-end NT-H1 thermal paste and SecuFirm2 mounting system for easy installation on Intel LGA1700 and LGA1851 CPUs
- Renowned Noctua quality backed up by 6-year manufacturers warranty, deluxe choice for Intel Core & Core Ultra with moderate heat load (e.g. 245K, 14600, 13600, see compatibility list)
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Overview
Specs
Reviews (3)
The NH-L9i-17xx is the latest, LGA1700-specific revision of Noctua's award-winning NH-L9i low-profile CPU cooler for Intel-LGA17xx based HTPCs and Small Form Factor (SFF) systems. At a height of only 37mm, the NH-L9i is ideal for extremely slim cases and, due to its small footprint, it provides 100% RAM and PCIe compatibility as well as easy access to near-socket connectors even on tightly packed mini-ITX motherboards. The custom-designed SecuFirm2 mounting system for the LGA1700 (LGA17xx family) socket makes installation a breeze and, thanks to the highly optimized NF-A9x14 92mm fan that supports fully automatic speed control via PWM, the NH-L9i-17xx runs remarkably quietly. Topped off with Noctua's renowned NT-H1 thermal compound, the NH-L9i-17xx combines everything users have come to expect from Noctua's larger coolers into a super-compact, premium-quality package for ITX and HTPC builds with Intel LGA17xx family CPUs.
Please note: The NH-L9i is a highly compact, quiet low-profile cooler designed for use in small form factor cases and HTPC environments. While it provides first-rate performance in its class, it is not suitable for overclocking and or CPUs that create high heat loads. Please consult our CPU compatibility list to find out whether the NH-L9i is recommended for your CPU.
The NH-L9i-17xx is the latest revision of Noctuas award-winning NH-L9i low-profile CPU cooler for Intel LGA1700 or LGA1851 based HTPCs and Small Form Factor (SFF) systems. At a height of only 37mm, the NH-L9i is ideal for extremely slim cases, and due to its small footprint, it provides 100% RAM and PCIe compatibility as well as easy access to near-socket connectors even on tightly packed mini-ITX motherboards. The custom-designed SecuFirm2 mounting system for the LGA1700 and LGA1851 sockets makes installation a breeze, and thanks to the highly optimised NF-A9x14 92mm fan that supports fully automatic speed control via PWM, the NH-L9i-17xx runs remarkably quietly. Topped off with Noctuas renowned NT-H1 thermal compound, the NH-L9i-17xx combines everything users have come to expect from Noctuas larger coolers into a super-compact, premium-quality package for mini-ITX and HTPC builds with Intel LGA1700 or LGA1851 CPUs. Please note: The NH-L9i is a highly compact, quiet low-profile cooler designed for use in small form factor cases and HTPC environments. While it provides first-rate performance in its class, it is not suitable for overclocking and or CPUs that create high heat loads. Please consult our CPU compatibility list to find out whether the NH-L9i is recommended for your CPU.
Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies*
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by Noctua Cooling Solutions Return Policy
- *Subject to applicable law
Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.
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The Noctua NH-L9i-17xx is a 37mm low-profile air CPU cooler for Intel LGA1700 and LGA1851 systems, suited to compact HTPC and SFF builds with moderate CPU heat loads. Its compact footprint is designed to preserve RAM and PCIe clearance.
Recommended For
- Builders of ultra-slim Intel LGA1700/LGA1851 mini-ITX or HTPC systems with 37 mm of CPU-cooler clearance, where fitting a cooler matters more than maximizing cooling capacity.
- Compact-PC builders who need to keep RAM slots and the nearby PCIe card accessible on a tightly packed motherboard.
- HTPC and small-form-factor users running a CPU that Noctua’s compatibility list recommends, especially for everyday desktop use and lighter workloads.
- Small-case gamers who prioritize a compact build and play games that do not keep the CPU under heavy all-core load; testing found gaming use more suitable than sustained AVX workloads on a high-power processor.
Real-World Use Scenarios
- Building an Intel mini-ITX PC in an especially slim case? The NH-L9i-17xx can fit where taller coolers cannot, while its small footprint leaves RAM and PCIe slots accessible.
- Using a moderate-heat Intel CPU for everyday desktop tasks or gaming in a compact build? It can handle this kind of use, especially with sensible fan curves and CPU power limits; results depend on the CPU and case airflow.
- Assembling a tightly packed ITX system? Its compact cooler footprint helps preserve access around the CPU socket, including nearby connectors, and avoids crowding memory and graphics-card slots.
- Building a quiet compact PC for light workloads or media playback? The fan can run quietly during everyday, low-load use, but it becomes more noticeable when the CPU is heavily loaded.
- Running long, CPU-intensive workloads on a high-power processor? Expect the cooler to reach its limits: testing with a Core i7-12700K found thermal throttling under a sustained Prime95 load, so a larger cooler or reduced CPU power limits may be needed.