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Noctua NH-L9a-AM4 AMD ONLY Low Profile Quiet CPU Cooler

Noctua NH-L9a-AM4 AMD ONLY Low Profile Quiet CPU Cooler

CCL Code: CLR0570


Noctua NH-L9a-AM4 AMD ONLY Low Profile Quiet CPU Cooler


CCL Code: CLR0570


Sorry, this product has been discontinued. We have found some similar products below.


The NH-L9a-AM4 is the latest, AM4-specific revision of Noctua’s award-winning NH-L9a low-profile CPU cooler for AMD Ryzen-based HTPCs and Small Form Factor (SFF) systems. At a height of only 37mm, the NH-L9a 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 AM4 socket makes installation child’s play and, thanks to the highly optimised NF-A9x14 92mm fan that supports fully automatic speed control via PWM, the NH-L9a-AM4 runs remarkably quietly. Topped off with Noctua’s renowned NT-H1 thermal compound, the NH-L9a-AM4 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 Ryzen CPUs or APUs.

The NH-L9a-AM4 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.

Main Features

  • New revision for Ryzen's AM4 socket - Since the original NH-L9a for AM2(+), AM3(+), FM1 and FM2(+) has received more than 50 awards and recommendations from international hardware websites and magazines, the new AM4 revision builds on the same proven heatsink design to provide excellent low-profile cooling performance for Ryzen CPUs and APUs.
  • 37mm low profile - Due 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 - The NH-L9a-AM4 has a compact footprint that fully complies with the socket keep-out zones specified by AMD. This means that neither the heatsink nor the fan overhang the RAM, so the cooler provides easy access to the slots and is fully compatible with tall memory modules
  • 100% compatibility with PCIe cards on mini-ITX - Some AMD-based mini-ITX motherboards have the PCIe slot located close to the CPU socket zone. While larger coolers that exceed this zone may block the PCIe slot, the compact-sized NH-L9a-AM4 provides full compatibility with PCIe cards.
  • Easy access to near-socket connectors - Many low-profile coolers use larger fans or heatsinks in order to achieve sufficient performance, but by protruding over the socket zone, they make it difficult or even impossible to reach near-socket connectors on tightly packed ITX motherboards. Thanks to its compact footprint, the NH-L9a-AM4 provides easy access to all connectors and components.
  • NF-A9x14 PWM premium fan - The highly optimised, award-winning 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-L9a-AM4 to stay remarkably quiet.
  • Low-Noise Adapter - Allowing the maximum speed of the NF-A9x14 PWM fan to be reduced from 2500 to 1800rpm, the included Low-Noise Adaptor (LNA) makes it possible to achieve near-silent setups with suitable CPUs/APUs that only create smaller heat loads.
  • Custom-designed SecuFirm2 mounting for AM4 - The NH-L9a-AM4 comes with a custom-designed SecuFirm2 mounting system for the AM4 socket of AMD's Ryzen platform. Allowing the heatsink to be fixed from the back of the motherboard, it makes installation easier than ever, all while maintaining the trusted SecuFirm2 quality.
  • NT-H1 thermal compound - Noctua's much-acclaimed NT-H1 is a pro-grade TIM solution that provides minimum thermal resistance, excellent ease of use and outstanding reliability. Chosen again and again by overclockers and enthusiast users worldwide, it has established itself as a benchmark for premium-quality thermal compounds.
  • 6-year manufacturer's warranty - Noctua products are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the supplied NF-A9x14 features an MTTF rating of more than 150.000 hours and the entire NH-L9a package comes with a full 6-year manufacturer's warranty.

CPU Types

Socket AMD Socket AM4


Fan Bearing Type SSO2
Fan Speed 600 ~ 2500 RPM
Fan Noise Level 14.8 ~ 23.6 dBA
Lifetime > 150,000 hours
Airflow 40.8 ~ 57.5 m3/h

Fan Speed Controller

Connector 4-pin PWM
Allowable Power 2.52 W
Voltage 12 V


Form Factor CPU Cooler
Base Material Copper
Heatsink Material Aluminium
In The Box NH-L9a-AM4 heatsink
NF-A9x14 PWM premium fan
Low-Noise Adaptor (L.N.A.)
NT-H1 high-grade thermal compound
SecuFirm2 AM4 mounting kit
Screws for 92x92x25mm fans
Noctua metal case-badge
Width 114 mm
Depth 92 mm
Height 23 mm
Weight 390 g
Fan Height 14 mm
Fan Weight 75 g


Warranty 6 Years

Key Features

Compatible with Socket AM3 No
Compatible with Socket AM2+ No
Compatible with Socket AM2 No
Compatible with Socket 939 No
Compatible with Socket 940 No
Compatible with Socket 754 No
Compatible with Socket A No
Compatible with Socket 1366 No
Compatible with Socket 1156 No
Compatible with Socket 775 No
Compatible with Socket 771 No
Compatible with Socket 478 No
Compatible with Socket 423 No
Compatible with Socket 370 No
Heatpipe Technology No
Includes Fan Yes
Compatible with Socket 2011 No
Compatible with Socket 1155 No
Compatible with Socket AM3+ No
Compatible with Socket FM1 No
Display Model in Showroom No
L.E.D Fan No LED
Compatible with Socket FM2 No
Liquid Cooler No
Compatible with Socket 1150 No
Compatible with Socket AM1 No
Watercooler No
Compatible with Socket 1151 No
Compatible with Socket AM4 Yes
Cooler Height 37 mm
Compatible with Socket TR4 No
Compatible with Socket 2066 No
Compatible with Socket 3647 No
Radiator Length N/A mm
Compatible with Socket 1200 No
Power Requirement (auto) 5 W
Cooler count 1

Item Details

Manufacturer Noctua
Manufacturer Code NH-L9a-AM4
Alternative Part Number NH-L9A
EAN 4716123314882
UPC 842431014276
Condition New

Warranty Information

Warranty 6 Years

Manufacturer Information

Manufacturer Noctua
Manufacturer Code NH-L9a-AM4

Do you have you a question about the Noctua NH-L9a-AM4 AMD ONLY Low Profile Quiet CPU Cooler?

Q: Is this compatible with AM4 out of the box?
Answer by Website User on 19th June 2020
Yes, this is AM4 compatible. -MR
0 customers found this answer helpful.
Post Answer
4.7 / 5 3 reviews

Andy D

March 2021

Wow this is a really great CPU cooler. Bizarre buy funky colours, cools amazingly well and soooooo quietly. Fitted into an ASRock DeskMini X300.


November 2020

Very difficult installation successful on my 5th attempt and used all the thermal paste already with the cooler mind you worth it it's very quiet and the temperature is between 55c to 65c on my Ryzen 5 2600 much better then the stock cooler which runs in the 70s.


August 2020

Havent used CPU came with fan