Part / accessory · Noctua

Noctua NH-L9a-AM5 low-profile cooler

verified 2026-10-13 Specs from Noctua specifications. Also known as: nh-l9a-am5, nh-l9a-am5 chromax.black.

Specs

typeair
height mm37
noteNot suitable for CPUs with high heat loads (Noctua).

Fits

  • cooler mount AMD AM5 cooler mounting
    CPU cooler mounting on AM5 boards; keeps AM4's stack-up height and backplate thread pattern.

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Good to know
  • Noctua: AM4 and AM5 share the same stack-up height and backplate thread pattern, so coolers that use the standard AMD backplate carry over; Corsair likewise says AM5 uses the same cooler bracket size as AM4.
  • Exception: coolers that replace the AMD backplate (Noctua NH-L9a-AM4, NM-AM4-L9aL9i) cannot be fitted to AM5.
  • Older Noctua coolers without AM4 hardware need the NM-AM5/4-MP83 or NM-AM5/4-MP78 kit (free with proof of purchase).
  • Offset mounting bars (e.g. Noctua's AM5 offset bars) are optional accessories that shift the heatsink toward the CPU hotspot; they are not required for fitment.
  • Cooler Master Hyper 212 Black Edition (RR-212S-20PK-R2): AM5 brackets are included only in later production; some units ship without them.

What does the Noctua NH-L9a-AM5 low-profile cooler work with?

17 models in the graph.

Informational only. Confirm with the manufacturer before buying or installing. Spotted a mistake? Report it.