Noctua NH-L9a-AM4 chromax.Black, Low-Profile CPU Cooler for AMD AM4 (Black)
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Anthony
> 3 dayDifficult cooler to use, do not use the paste they send.
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Trevor Johnson
> 3 dayThis thing is incredible. Keeps my 3600xt around 30C at idle and around 65C while gaming at ultra settings.
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Rikk Caro
> 3 dayLove the fan, super high quality. The mounting kinda was ridiculous though but Im not sure how to make that better. You have to hold the mounting bracket backplate, fan, and the screw in place all at once. I guess you could temporarily tape the backplate and then remove it after install. But yeah its dead quiet, looks great, and truly is low profile.
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TJ H.
> 3 daySystem: Gigabyte X570 I Aorus Pro, AMD Ryzen 5 5600g, 32gb G-skill Ripsaw Ram 2400Mhz, 500 gig PNY SSD and 1T WD SSD. Ram at advertised 2400Mhz and cpu over clocked at 4ghz. Heat problems right off the get start. Turned ram down to 2133 and cpu to stock 3.9 and heat problems still, exchanged out with stock heat sink and fan, turn ram back up to advertised and over clocked the cpu and no more heat problems. Gave 2 stars because the Noctua NH-L9a-AM4 chromax Black, Low-Profile CPU Cooler for AMD AM4 just would not do the job. Made from great materials. I will save for my next build which is going to be an F2+ socket, AMD 6800k down to a mini itx case. Ill update if it keeps that one cool.
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Aziz
> 3 dayNot very far off in temps as the cryorig c7 it replaced but its way quiet. Cant hear it under load with my Ryzen 2600
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Erick Wolf
> 3 dayVery quiet and all black. Doesnt have the noctua logo on the fan like some. The best low profile air cooler
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Jack B.
07-06-2025This cpu cooler is amazing for the size because noctua is amazing, but keep in mind, temps will still get hot.
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3b0ny1
> 3 dayeven a 6 core CPU will struggle with this air cooler. My 3600X would frequently overheat with this cooler causing my PC to randomly crash when doing anything other than web browsing or watching movies.
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andrew
> 3 dayCant go wrong with a Noctua cooler, this one is super quiet and keeps temps low under a decent load. Only complaint is the installation of this one, you have to remove your motherboard if you are adding this to an existing build and it requires you to kind of blind align the cpu and heatsink to get the screws to thread from the back.
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Mr. Oren Ledner Sr.
> 3 daySuper quite. Way nicer than the stock AMD coolers
The NH-L9a-AM4 chromax.black is an all-black version of Noctua’s award-winning NH-L9a-AM4 low-profile quiet CPU cooler for AMD Ryzen based HTPCs and Small Form Factor (SFF) builds. Thanks to the same proven heatsink design and NF-A9x14 PWM fan, it stays true to the NH-L9a-AM4’s successful formula of fusing a height of only 37mm with strong performance and excellent quietness of operation, as well as 100% RAM and PCIe compatibility. At the same time, the chromax.black version with its black fan and black coated heatsink combines these assets with a sleek stealth look. Topped off with the renowned SecuFirm2 low-profile mounting system for AMD AM4 and Noctua’s enthusiast-grade NT-H1 thermal compound, the NH-L9a-AM4 chromax.black is a premium choice for customers who seek an ultra-compact heatsink that looks just as great as it cools.
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37mm low profileDue 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 compatibilityThe 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-ITXSome 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. |
Custom-designed SecuFirm2 mounting for AM4The 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. |
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
Materials
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
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 chromax.black premium fan
- NA-RC7 Low-Noise Adaptor (L.N.A)
- NT-H1 high-grade thermal compound
- Black SecuFirm2 AM4 mounting kit
- Black screws for 92x92x25mm fans
- Metal Case-Badge
chromax.black design
The NH-L9a-AM4 chromax.black is black from head to toe: Featuring a black coated heatsink, a black fan with black anti-vibration-pads, black fan screws and black mounting parts, it’s right at home in all-black builds and easy to integrate with other colour schemes.
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| NH-L9i | NH-L9a-AM4 | NH-L9a-AM5 | NH-L9i chromax.black | NH-L9a-AM4 chromax.black | NH-L9a-AM5 chromax.black | |
| LGA2066, LGA2011-0 & LGA2011-3 | X | X | X | X | X | X |
| LGA1700 | X | X | X | X | X | X |
| LGA1200, LGA115x (LGA1150, LGA1151, LGA1155, LGA1156) | ✓ | X | X | ✓ | X | X |
| LGA775 & LGA1366 | X | X | X | X | X | X |
| Xeon LGA2011 Narrow ILM / Xeon LGA1366 & LGA1356 | X | X | X | X | X | X |
| Xeon LGA3647 | X | X | X | X | X | X |
| Xeon LGA4189 | X | X | X | X | X | X |
| 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 | X | X | X | X | X | X |