Noctua NH-L9a-AM4 chromax.Black, Low-Profile CPU Cooler for AMD AM4 (Black)
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Walter Gray
Greater than one weekThis is a great cpu cooler that is quiet and low profile. This is cooling my Ryzen 7 3700X and keeping the temperatures steady and ideal. I would like to see a newer method by Noctua for mounting this type of cooler. Having to secure the unit from underneath is doable just takes some coordination. Overall the device is great and works flawless. I would like to see some option for a fan RGB. This is an excellent purchase for those who may be building an ITX system also. Noctua gets my vote for Quality and Performance.
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Ben
> 3 dayAwesome fan, but they should have a compatibility chart on each cpu cooler.
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Rob A.
> 3 dayPros: Pretty quiet, fit my super SFF case without impinging on the RAM and leaving more room in the already small box.
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Eric
> 3 daySomehow cools my 3950x
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ronnie d baldwin
Greater than one weekwould buy again
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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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Zuri
08-06-2025Really great product. Needed a cooler for my Ryzen processor in my M-ITX build. Extremely tight case (Silverstone SG13) so I needed something with low clearance. This fit the bill and is nearly silent to boot. Will always recommend Noctua products.
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Anthony
Greater than one weekDifficult cooler to use, do not use the paste they send.
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spooksar
> 3 dayIt was easy to install and works like a charm. I have never been disappointed with noctua.
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Seancan
> 3 dayIts very hard not to be impressed with these little coolers. I was so impressed with the one on my 10600 (the i version ofc) I bought this one for my new AMD rig and it is handling the 5800x just fine! Even under heavy load it isnt passing much over 80C, and undervolting has dropped that down to about 74~77 after 15m continuous high load. I cant speak for fully enclosed cases, but in my little SM560 its handling things better than expected.
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 |