Noctua NH-L9i

Noctua NH-L9i Review

Product Impressions:

IMG_6892 IMG_6893 IMG_6894 IMG_6896 IMG_6898 IMG_6900 IMG_6901 IMG_6902


Product Information:

 Product Details
Cooler TypeLow Profile
Compatibility Intel1150, 1155, 1156
Compatibility AMD-
Weight420 g
Height37 mm
MaterialCopper base, aluminium fins
Fan Type1 x 92 mm PWM (4-Pin)
Mounting TypeScrews
Thermal Paste IncludedYes (Noctua NT-H1)
Memory compatibility issuesNo
Recommended forHTPCs, Office PCs, Gaming PCs
Recommended for OverclockingYes (only low TDP CPUs such as G3258)

Unboxing the L9i you will be amazed by the packaging and the product quality.


The Noctua NH-L9i is one of the best low profile coolers on the market. I can recommend this cooler for all CPUs with a TDP of 80 W and below such as Core i3, Core i5 and Core i7.

The cooler comes with the Noctua NT-H1 thermal paste and is compatible to all latest Intel and AMD CPUs. NT-H1 is one of the best thermal pastes on the market and very easy to apply. So if you decide to buy this cooler there is no need to buy a seperate paste.

The 92 mm fan provides a good cooling and reaches up to 41.8 dB with 12 Volt. For HTPC or Office PCs I recommend to use 5 Volt supply voltage as the cooler still performs well but the noise-level drops significantly to 32.3 dB which is almost impossible to hear in a normal system.

This cooler is perfect for small HTPC or miniITX systems. You won’t have any compatibility issues on the memory or the graphicscard.

Noctua has a great compatibility list on their website which you might want to check:

Product Highlights:

  • Ultra low noise at 5 Volt
  • Low profile cooler perfect for miniITX and other small HTPC or Office systems
  • Great performance
  • Noctua NT-H1 thermal paste included
  • Great packaging
  • Amazing product quality


Klick here to view the test with 40 Watt heat load

Klick here to view the test with 80 Watt heat load


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  • Slikrx/Jeff

    I ran this in my Corsair Obsidian 250D, with an OCed 6600K. For day to day work and gaming, it did just fine. The same would go for anyone using a 6600 in an HTPC. But running some benchmarks and such to check stability of my OCed chip, I hit temps of 81*C.

    I switched to the NH-L12 and temps dropped to the low/mid 60s, even during hard stress testing. (this was both for OC of 4.8 GHz and 4.9 GHz, at 1.35 V) Also of note, I run this build with fairly strong positive pressure: 2 140mm inlet fans (next to CPU) and a 200 mm inlet fan (front, behind inlet panel), and passive exhaust.

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