Noctua NH-L9i Low Profile CPU Cooler for Intel LGA115X CPUs

MX43901 NH-L9i Low Profile CPU Cooler for Intel LGA115X CPUs
MX43901 NH-L9i Low Profile CPU Cooler for Intel LGA115X CPUs MX43901 NH-L9i Low Profile CPU Cooler for Intel LGA115X CPUs MX43901 NH-L9i Low Profile CPU Cooler for Intel LGA115X CPUs MX43901 NH-L9i Low Profile CPU Cooler for Intel LGA115X CPUs

Product Info

Intel LGA1150, 1155 and 1156 Compatible Low Profile CPU Cooler

featureThe NH-L9i is a premium quality quiet CPU cooler for Intel LGA115x based HTPCs and Small Form Factor systems, including the newest Intel® LGA1150 H3 socket CPUs.

At a super-low profile of only 37mm, the NH-L9i is ideal for extremely slim cases and due to its 95 x 95mm 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 optimised 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.


37mm Low Profile
featureDue to the slim 23mm heatsink and the NF-A9x14 low profile fan that measures only 14mm in thickness, the NH-L9 stands a mere 37mm tall, which makes it ideal for use in compact HTPCs or Small Form Factor cases that offer minimum clearance for CPU coolers.

100% RAM Compatibility
featureThe NH-L9i has a 95x95mm footprint that complies exactly to the Intel LGA115x socket keep-out zone. This means that it won't cause issues with chipset coolers and doesn't overhang the RAM slots, so it's fully compatible with tall memory modules.

100% Compatibility with PCIe Cards on Mini-ITX
featureMost Intel LGA115x based mini-ITX mainboards have the PCIe slot sitting right next to the 95x95mm socket zone. While larger coolers that exceed this zone are likely to block the PCIe slot, the 95x95xmm sized NH-L9i provides full compatibility with PCIe cards.

NF-A9x14 PWM Premium Fan
featureThe highly optimised NF-A9x14 premium fan features Noctua's proprietary AAO frame as well as sophisticated aerodynamic design measures. Supporting PWM for fully automatic speed control, the NF-A9x14 allows the NH-L9i to stay remarkably quiet.

Low-Noise Adaptor
featureAllowing to reduce the maximum speed of the NF-A9x14 fan from 2500 to 1800rpm, the included Low-Noise Adaptor (L.N.A.) makes it possible to achieve near-silent setups using CPUs with less than 65W TDP.

Custom-designed SecuFirm2™ Mounting for LGA115x
featureThe NH-L9i bundles a custom-designed, backplate-less SecuFirm2™ mounting system for LGA115x that offers extended compatibility with mini-ITX boards and makes installation easier than ever, all while maintaining the trusted SecuFirm2™ quality.

Noctua NT-H1 Thermal Compound
featureNoctua's highly acclaimed NT-H1 Compound is a well proven pro-grade TIM solution that provides minimum thermal resistance, excellent ease-of-use and outstanding reliability.

6 Year Manufacturer Limited Warranty
featureNoctua products are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the supplied NF-A9x14 features an MTBF rating of more than 150.000 hours and the entire NH-L9i package comes with a full 6 years manufacturer's warranty.


Thermal Guidelines:

  • Intel Sandy Bridge CPUs
    • 65W or less: no restrictions
    • 66 ~ 95W: Recommended with good case ventilation only
  • Intel Ivy Bridge CPUs
    • 65W or less: no restrictions
    • 66 ~ 77W: Recommended with good case ventilation and Intel Turbo Mode disabled only

Designed for Intel® Socket 1150, 1155 and 1156 Motherboards only.

Click Here for an up to date list of Compatible Motherboards.


Material Copper (base and heat-pipes)
Aluminium (cooling fins)
Nickel Plating
Soldered Joints
Socket compatibility Intel LGA 1150, 1155, 1156
Fan compatibility 92 x 92 x 14mm
92 x 92 x 25mm
Model 1x NF-A9x14 PWM Premium Fan
Bearings SSO2 Bearing
Rotational Speed Max.: 2,500 RPM (± 10%)
Max. with L.N.A.: 1,800 RPM (± 10%)
Min. (PWM): 300 RPM
Airflow Max. 57.5 m³/h
Max. with L.N.A.: 40.8 m³/h
Acoustical Noise Max.: 23.6 dB(A)
Max. with L.N.A.: 14.8 dB(A)
Input Power 2.52 W
Voltage Range 12 V
MTBF > 150,000 Hours
Dimensions & Weight  
Dimensions (LxWxH) Without fan: 95 x 95 x 23mm (3.7 x 3.7 x 0.9")
With fan:: 95 x 95 x 37mm 3.7 x 3.7 x 1.5")
Weight Without fan: 345g (13.6oz)
With fan: 420g (16.5oz)

Package Contents

  • 1x NH-L9i CPU Cooler
  • 1x NF-A9x14 PWM premium fan
  • 1x Low-Noise Adaptor (L.N.A.)
  • 1x NT-H1 high-grade thermal compound
  • 1x SecuFirm2™ Mounting Kit
  • 1x Screw Kit for 92mm fans
  • 1x Noctua Metal Case Badge