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, Noctua’s enthusiast-grade NT-H1 thermal compound and a full 6-year manufacturer’s warranty, 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.
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.
 NH-L9i |
 NH-L9a-AM4 |
 NH-L9i chromax.black |
 NH-L9a-AM4 chromax.black |
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| LGA2066 | X | X | X | X |
|---|---|---|---|---|
| LGA2011-0 & LGA2011-3 | X | X | X | X |
| LGA115x (LGA1150, LGA1151, LGA1155, LGA1156) | ✓ | X | ✓ | X |
| LGA1366 | X | X | X | X |
| LGA775 | X | X | X | X |
| AM2(+), AM3(+), FM1, FM2 (+) | X | X | X | X |
| AM4 | with NM-AM4-L9aL9i | ✓ | with NM-AM4-L9aL9i | ✓ |
| TR4 & SP3 | X | X | X | X |
