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NA-FD1 Fan Duct Kit for NH-L9i/L9a CPU Coolers €10.76
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Noctua NA-FD1 Fan Duct Kit for NH-L9i/L9a CPU Coolers

The NA-FD1 has been designed to help reduce CPU temperatures in tightly spaced mini ITX builds.

he NA-FD1 fan duct kit makes it possible to significantly improve the performance of Noctua NH-L9i and NH-L9a series CPU coolers in Small Form Factor (SFF) environments where there is a gap of 5mm or more (up to 45mm) between the cooler and a perforated top or side panel. Bridging this gap, the duct prevents the cooler from taking in hot air from the interior and enables it to draw in fresh from the outside through the perforated panel, which can, depending on the setup, improve CPU temperatures by as much as 5°C or more. As the duct is assembled from EVA foam spacers of different thickness, it is fully modular and can be adjusted in 1mm increments from 5mm to 45mm height in order to fit various different cases and configurations. In short, the NA-FD1 is a simple yet smart, flexible, and cost-effective way of boosting the efficiency of NH-L9 series coolers!

Significant performance boost

In tightly packed, ITX-based Small Form Factor builds, hot air can accumulate around the socket area. By enabling the NH-L9 cooler to draw in fresh air from the outside instead of hot interior air, adding the NA-FD1 can lead to huge performance gains of up to 5°C and more.

Compatible with NH-L9i and NH-L9a models

The NA-FD1 is fully compatible with all variations of the NH-L9i (NH-L9i, NH-L9i chromax.black, NH-L9i-17xx, NH-L9i-17xx chromax.black) and NH-L9a (NH-L9a, NH-L9a-AM4, NH-L9a-AM4 chromax.black) series. It is not compatible with the NH-L9x65, NH-L9x65 SE-AM4 or other coolers.

Reduced intake noise compared to taller coolers

When fans draw in air through perforated panels that are very close to their intake, high-pitched turbulence noises can occur. With the NA-FD1, the NH-L9’s fan has at least 5mm (and up to 45mm) of breathing space, which yields a smoother sound signature compared to taller coolers that may struggle with intake noise issues due to low clearance.

Ideal for cases with 42-82mm clearance

Consisting of 7 foam spacers from 10 to 3mm thickness, the NA-FD1 can be adjusted from 5mm to 45mm in 1mm increments. As such, it is ideal for bridging the gap between the 37mm high NH-L9 coolers and perforated side or top panes of cases that offer between 42 and 82mm clearance such as the popular Dan A4-SFX (48mm) or the Louqe Ghost S1 (66mm).

Adjustable and reusable

The NA-FD1 set consists of 7 Ethylene-Vinyl Acetate (EVA) foam spacers with different thicknesses (2x 10, 7, 6, 5, 4, 3mm) that can be stacked to bridge gaps of different sizes. If you decide to switch to a different case or configuration that has more or less clearance, you can simply adjust the duct by adding or removing spacers.

Easy installation

Installing the NA-FD1 is a breeze: Simply measure the gap between the cooler and the panel, select the corresponding foam spacers, replace the original fan screws with the supplied bolts, stick the plastic tubes to the bolts, add the foam spacers, cut the tubes to the appropriate length and you’re ready to go!

SpecificationsNA-FD1
ColourBlack
Scope of delivery7x foam spacers (10mm (2x), 7mm, 6mm, 5mm, 4mm, 3mm), 16x plastic tubes, 4x steel bolts
Cooler compatibilityNH-L9i, NH-L9i chromax.black, NH-L9i-17xx, NH-L9i-17xx chromax.black, NH-L9a-AM4, NH-L9a-AM4 chromax.black
Warranty72 months
EAN barcode9010018201109
SpecificationsNA-FD1
ColourBlack
Scope of delivery7x foam spacers (10mm (2x), 7mm, 6mm, 5mm, 4mm, 3mm), 16x plastic tubes, 4x steel bolts
Cooler compatibilityNH-L9i, NH-L9i chromax.black, NH-L9i-17xx, NH-L9i-17xx chromax.black, NH-L9a-AM4, NH-L9a-AM4 chromax.black
Warranty72 months
EAN barcode9010018201109

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I purchased this Thermolab Trinity cpu cooler to replace the Intel cpu cooler supplied with an Intel Pentium D processor 830 3 GHz LGA775. The problem with the Intel cooler was that it was just so noisy - it was a real pain having to listen to it all day. Installing the Trinity was a fairly major undertakiing, because you have to take out the motherboard. That is because the Trinity has a backplate which is mounted on the underside of the motherboard and which bolts through to secure the main cooler on the cpu side of the board. I think it would be extremely unlikely that you could install this without removing the motherboard and, in my system, an Intel D945GNT system board mounted in an Acousticase AC 6607 case, this also involved taking out the hard drives and the psu. In all it took me over three hours to install this cooler - although how long it takes will depend a lot on your particular system and how used you are to taking it all apart. Howeever, having made the effort, it was definitely worthwhile. The new cooler is virtually silent and it is wonderful not to have to spend all day listening to the Intel cooler fan whining away. Monitoring showed that the Intel cooler fan was doing about 4800 rpm against the Trinity at typically 600 rpm or so - which accounts for why it is quieter; the bigger fan rotates more slowly to move the same volume of air. And, of course, it has a much bigger radiator, which I am sure helps. The comfort levels around the machine have now inproved dramatically. Also, the temperature levels seem good - I wasn't monitoring them closely before I changed coolers, but the monitororing I'm doing now suggests that they are down on what they were before. Also, excellent technical support and service from Quiet PC. All in all, an excellent product and well worth the effort of installing it.
(Review via Trustpilot)