Noctua NH-L9I Review & Specs

Noctua NH-L9I CPU Cooler

Noctua NH-L9I CPU Cooler

- Noctua

★ ★ ★ ★ ★
(174 reviews)

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  • The NH-L9i is a premium quality quiet CPU cooler for Intel LGA115x based HTPCs and Small Form Factor systems. At a super-low profile of only 37mm, the NH-L9i is ideal for extremely slim cases and due to its 95x95mm footprint, it provides full compatibility with tall RAM modules and VGA cards on mini-ITX mainboards. The custom designed SecuFirm2 mounting system for LGA115x makes installation a child’s play and thanks to the highly optimized NF-A9x14 premium fan that supports fully automatic speed control via PWM, the NH-L9i runs remarkably quiet. Topped off with Noctua’s renowned NT-H1 thermal compound, the NH-L9i fuses everything users have come to expect from Noctua’s larger coolers into a super-compact package for slim HTPC systems.
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Specifications Overview

Model NH-L9i
Release Date July 2013

* First availability for purchase, it may not correspond to the actual market launch date.

Supported Sockets
  • AM4
  • LGA1150
  • LGA1151
  • LGA1155
  • LGA1156
  • LGA1200
Liquid Cooler
Radiator Size -
Bearing Type Unknown
Fan RPM 2500 - 2999 RPM
Height 37mm


  • Ultra compact
  • Quiet straight out of the box
  • Simple installation


  • Supports only a few Intel sockets
  • Cannot be used with Intel CPUs with higher than 65watt TDP


Socket compatibility   LGA1150, LGA1155, LGA1156
Height (without fan)   23 mm
Width (without fan)   95 mm
Depth (without fan)   95 mm
Height (with fan)   37 mm
Width (with fan)   95 mm
Depth (with fan)   95 mm
Weight (without fan)   345 g
Weight (with fan)   420 g
Material   Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Fan compatibility   92x92x14mm, 92x92x25mm
Scope of Delivery  
  • NF-A9x14 PWM premium fan
  • Low-Noise Adaptor (L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm2™ Mounting Kit
  • Screws for 92x92x25mm fans
  • Noctua Metal Case-Badge
Warranty   6 Years

Fan specifications
Model   Noctua NF-A9x14 PWM
Bearing   SSO2
Max. Rotational Speed (+/- 10%)   2500 RPM
Max. Rotational Speed with L.N.A. (+/- 10%)   1800 RPM
Min. Rotational Speed (PWM, +/-20%)   600 RPM
Max. Airflow   57,5 m³/h
Max. Airflow with L.N.A.   40,8 m³/h
Max. Acoustical Noise   23,6 dB(A)
Max. Acoustical Noise with L.N.A.   14,8 dB(A)
Input Power   2,52 W
Voltage Range   12 V
MTBF   > 150.000 h

Critic Reviews


Noctua's low profile NH-L9i heatsink stands 36mm tall so it will fit into the smallest of small form factor chassis. The NH-L9i is designed to cool Intel socket LGA115x (1155/1156/1150) processors only, which is a departure from the one-size-fits-all...


Now it's time for my final thoughts on the Noctua NH-L9i Low Profile CPU Cooler designed for socket LGA 115X CPU's, how does it compare to its bigger brothers and how does it cope with the extreme heat of Haswell combined with a nice hot summers day?...


The Noctua NH-L9i is a great low-profile cooler for an HTPC and offers far better performance than Intel's stock...

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