Skip to main content
  • AUD$80.30
  • AUD$80.31
  • GST-Inclusive Price
  • AUD$9.00 Shipping
Ships from Taiwan.
Most customers receive within 4-7 days.
Add to Wish List(Found on 96 wish lists)

Best Sellers

4.5 (6 total ratings)
  • $95.70
  • + FREE SHIPPING
Top Rated
4.2 (14,728 total ratings)
  • $75.90
  • + AUD$31.99 Shipping
4 (8 total ratings)
  • $125.40
  • + FREE SHIPPING
Shop it at NeweggBusiness.
Get Educated

Make informed decisions with expert advice. Learn More

Noctua NH-L9a-AM4, Premium Low-profile CPU Cooler for AMD AM4 (Brown)

  • NH-L9a AM4
  • NH-L9i
  • NH-L9i chromax
  • Only 37mm total height, ideal for slim HTPC cases and Small Form Factor (SFF) builds
  • Compact footprint for 100% RAM and PCIe compatibility on ITX motherboards as well as easy access to near-socket connectors
  • Quiet, premium-grade NF-A9x14 fan with Low-Noise Adaptor and automatic speed control via PWM
  • Includes award-winning NT-H1 thermal compound and easy-to-install SecuFirm2 mounting system for the AM4 socket of AMD’s Ryzen CPUs and APUs
  • Renowned Noctua quality backed up by 6-year manufacturer’s warranty, deluxe choice for AMD Ryzen CPUs & APUs with moderate heat load (e.g. 5600, 4750G, 4650G, 4600G, see compatibility list)
+
+
Overview
Specs
Reviews (267)
logo
header

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.

 

37mm low profile
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
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
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.  
NF-A9x14
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.


 

Specifications
Cooler Specifications
Please Note:

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.

Scope of delivery
  • NF-A9x14 HS-PWM premium fan
  • NA-RC7 Low-Noise Adaptor (L.N.A)
  • NT-H1 high-grade thermal compound
  • SecuFirm2 AM4 mounting kit
  • Screws for 92x92x25mm fans
  • Noctua Metal Case-Badge
Measurements
  • Height (without fan): 23 mm

  • Width (without fan): 114 mm

  • Depth (without fan): 92 mm

  • Height (with fan): 37 mm

  • Width (with fan): 114 mm

  • Depth (with fan): 92 mm

  • Weight (without fan): 390 g

  • Weight (with fan): 465 g

Material

Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating


 

New revision for Ryzen's AM4 socket

Please note that being a dedicated special edition for AM4, the NH-L9a-AM4 comes with AM4 mounting hardware only. (For full socket compatibility, see table below)

 

banner
Products
LGA2066, LGA2011-0 & LGA2011-3 - - - - - -
LGA1700 - - - - - -
LGA1200, LGA115x (LGA1150, LGA1151, LGA1155, LGA1156) - - - -
LGA775 & LGA1366 - - - - - -
Xeon LGA2011 Narrow ILM / Xeon LGA1366 & LGA1356 - - - - - -
Xeon LGA3647 - - - - - -
Xeon LGA4189 - - - - - -
AM4 with NM-AM4-L9aL9i with NM-AM4-L9aL9i with NM-AM4-L9aL9i with NM-AM4-L9aL9i
AM5 with NM-AM5-L9aL9i with NM-AM5-L9aL9i with NM-AM5-L9aL9i with NM-AM5-L9aL9i
sTRx4, sWRX8, TR4, SP3 - - - - - -
The NH-L9a-AM4 is the latest, AM4-specific revision of Noctuas 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 childs 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 Noctuas renowned NT-H1 thermal compound, the NH-L9a-AM4 combines everything users have come to expect from Noctuas larger coolers into a super-compact, premium-quality package for ITX and HTPC builds with Ryzen CPUs or APUs.
Please note: 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. Please consult our CPU compatibility list to find out whether the NH-L9a-AM4 is recommended for your CPU/APU.

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.

Manufacturer Contact Info

LOADING...
LOADING...

The Noctua NH-L9a-AM4 is a 37 mm-tall, low-profile air CPU cooler for AMD AM4 processors, suited to compact SFF and HTPC builds with moderate heat loads where cooler clearance is limited.

Recommended For

  • Small-form-factor PC builders whose case allows only a very low CPU cooler, and who want a 37 mm cooler with clearance around nearby RAM and PCIe components.
  • HTPC and compact desktop builders using a compatible, moderate-heat AM4 Ryzen CPU or APU for everyday computing, media playback, or light workloads rather than overclocking.
  • SFF owners who value a compact, simple air-cooling setup and want a PWM fan that reviewers found quiet in moderate-use testing, provided the case has adequate airflow.
  • AM4 mini-ITX builders who need a small cooler footprint to keep access to nearby motherboard connectors and components.

Real-World Use Scenarios

  • Building an ultra-slim AM4 HTPC or SFF PC with very little CPU-cooler clearance? The NH-L9a-AM4 is designed for this kind of compact build, where a larger cooler may not fit.
  • Fitting a cooler onto a crowded AM4 mini-ITX motherboard? Its compact footprint leaves RAM slots and the PCIe slot accessible, which can make component installation and later maintenance easier.
  • Using an AM4 Ryzen APU in a small living-room or home-office PC? The cooler is positioned for compact Ryzen systems, and testing with a Ryzen 5 3400G found CPU temperatures comparable to AMD’s Wraith Spire under the tested conditions.
  • Putting together a compact PC for everyday tasks or gaming with a suitable AM4 CPU? It can work in SFF builds, but temperatures and fan noise depend on the processor and case airflow, so check the CPU guidance and allow for variation between builds.
  • Running long, CPU-heavy workloads or planning to overclock? This is not the best use case: Noctua describes the cooler as unsuitable for overclocking and recommends checking CPU compatibility, so choose a larger cooler if sustained heavy processing is a priority.