Noctua NH-L9a-AM4
CPU Coolers

NH-L9a-AM4

Noctua

Released Mar 1, 2018 · Analysis updated Mar 4, 2026

Noctua NH-L9a-AM4 is a low-profile CPU cooler with quiet operation, excellent cooling for its size, and easy installation for compact builds. The Noctua NH-L9a-AM4 scores 80/100 based on 5 expert reviews in the cpu coolers category. Coverage includes reviews from Lanoc, Phoronix, Pcper, and Modders-inc.

Critic Score

What's this?
80

based on 5 expert reviews

LanocPhoronixPcperModders-incAphnetworks

Low confidence · only 5 reviews

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Pros

  • Quiet operation(3)
  • Excellent cooling performance for its size(2)
  • Easy and straightforward installation(2)

Cons

  • Requires rear motherboard access for installation(2)

5 Expert Reviews

85
Jun 27, 2018

The Noctua NH-L9a-AM4 and NH-L12S offer excellent cooling performance and quiet operation in compact form factors, with the NH-L12S being particularly impressive for its size.

85
Sep 21, 2019

The Noctua NH-L9a-AM4 is a very low-profile AMD Ryzen cooler that works well for HTPC and file storage builds.

82
Mar 28, 2018

Noctua's L9a-AM4 cooler offers impressive performance with a minimal footprint for your Ryzen-based system.

82

The Noctua NH-L9A-AM4 is a compact, quiet cooler that excels at overclocking while maintaining whisper-quiet operation.

65

The Noctua NH-L9a-AM4 chromax.black struggled to cool the Ryzen 7 3700X with a very warm temperature of 83°C under load.