Tuesday, November 9th 2021

Noctua Introduces NH-L9i Low-profile CPU Coolers for LGA1700 and NA-FD1 Fan Duct

Noctua today introduced new, LGA1700-specific revisions of its award-winning NH-L9i and NH-L9i chromax.black low-profile CPU coolers. The new NH-L9i-17xx and NH-L9i-17xx chromax.black are ideal for building ultra-compact HTPCs and Small Form Factor (SFF) systems using Intel's brand new 12th generation Core processors such as the Core i9-12900K, Core i7-12700K or Core i5-12600K. The new, optional NA-FD1 fan duct makes it possible to further improve the performance of the coolers by bridging the gap between the fan and perforated case panels in order to enable the coolers to draw in fresh air from the outside.

"We're very happy with the performance of the NH-L9i-17xx coolers on Intel's new LGA1700 CPUs", says Roland Mossig (Noctua CEO). "We have managed to dissipate up to around 160 W on the Core i9-12900K, pushing it to over 4.2 GHz, and up to 125 W on the Core i5-12600K running at 4.3 GHz. These are excellent results for such small coolers, making them fantastic options for highly compact Intel Z690 builds that pack a lot of processing power!"
The NH-L9i-17xx and the all-black NH-L9i-17xx chromax.black are the latest, LGA1700-specific revisions of Noctua's award-winning NH-L9i low-profile CPU cooler. At a height of only 37 mm, the NH-L9i is ideal for extremely slim cases and, due to its small footprint, it provides 100% RAM and PCIe compatibility as well as easy access to near-socket connectors even on tightly packed Mini-ITX motherboards. The custom-designed SecuFirm 2 mounting system for the new LGA1700 socket makes installation a breeze and, thanks to the highly optimised NF-A9x14 92 mm fan that supports fully automatic speed control via PWM, the NH-L9i-17xx runs remarkably quietly. Topped off with Noctua's renowned NT-H1 thermal compound, the NH-L9i-17xx combines everything users have come to expect from Noctua's larger coolers into a super-compact, premium-quality package for ITX and HTPC builds with Intel's new 12th generation Core CPUs.

"For Small Form Factor builds, we now highly recommend the optional NA-FD1 fan duct kit, both to customers choosing the new NH-L9i-17xx models and to users of the existing NH-L9i and NH-L9a heatsinks", explains Roland Mossig (Noctua CEO). "It's a simple yet highly effective way of boosting the performance of these coolers in compact cases. Tech-savvy enthusiasts have been creating similar ducts with their 3D printers for quite some time, but not everyone has the capabilities to do this, so we thought it would be great to offer an affordable, flexible duct kit that doesn't require any special equipment or skills to set up."

The new 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 5 mm or more (up to 45 mm) 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 air 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 1 mm increments from 5 mm to 45 mm 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-L9a and NH-L9i series coolers

The manufacturer's suggested retail prices are as follows:
  • NH-L9i-17xx: EUR/USD 44.90
  • NH-L9i-17xx chromax.black: EUR/USD 54.90
  • NA-FD1: EUR/USD 12.90
For more information, visit the product pages of the NH-L9i, NH-L9i chromax.black, and NA-FD1.
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131 Comments on Noctua Introduces NH-L9i Low-profile CPU Coolers for LGA1700 and NA-FD1 Fan Duct

#126
Garrus
Metroidlol, how can this thing can possible cool a 300 watts cpu. This can only be a joke.
Not hard to use them, you just set your i7-12700k to 4.5ghz all core, and lower the voltage. You'll only need 120W at max power draw.
First StrikeHow can a single thread attract so many cranks who doesn't even bother to fact check on Google before coining up obvious things.
Yeah I know. Intel uses little power if you keep it 4.5ghz or lower. If you tune your CPU voltage you can drop very low. 4.5ghz is 112w. i7-12700k. And while gaming etc. you'll never get close. As long as the motherboard has a good BIOS (a lot are not great) you can also just set any power limit you choose and get the full 5.1ghz turbo under 100w, also for gaming.
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#127
TheDeeGee
Now they also need to make a duct for the NH-C14S ^^
Posted on Reply
#128
Valantar
TheDeeGeeNow they also need to make a duct for the NH-C14S ^^
It would need to be a bit different as that has the fan clipped on rather than screwed in, but it shouldn't be hard to do - just make the mounting mechanism a thumbscrew that threads into the fan itself, rather than goes through it and into the cooler. IMO, they should just make this mounting mechanism, then launch similar "universal" kits for 92mm, 120mm and 140mm.
Posted on Reply
#129
TheDeeGee
ValantarIt would need to be a bit different as that has the fan clipped on rather than screwed in, but it shouldn't be hard to do - just make the mounting mechanism a thumbscrew that threads into the fan itself, rather than goes through it and into the cooler. IMO, they should just make this mounting mechanism, then launch similar "universal" kits for 92mm, 120mm and 140mm.
Actually got a reply from Noctua on one of their videos.

"We're seeing hardly any benefit with larger, taller coolers."

"It's not so much about the fan thickness (L9 with 25mm would benefit as well) but about the fact that with larger coolers like the C14S, there's usually less hot air accumulating around the cooler due to the fact that there's space underneath."

So it's all about the clearance underneat the cooler.
Posted on Reply
#130
Valantar
TheDeeGeeActually got a reply from Noctua on one of their videos.

"We're seeing hardly any benefit with larger, taller coolers."

"It's not so much about the fan thickness (L9 with 25mm would benefit as well) but about the fact that with larger coolers like the C14S, there's usually less hot air accumulating around the cooler due to the fact that there's space underneath."

So it's all about the clearance underneat the cooler.
That makes sense to some degree - the L9x series does sit almost flush with the motherboard, so there isn't much space for air to escape - and escaping air will be turbulent and slow-moving, which likely promotes recirculation rather than it being ejected away from the cooler. Still, I'm surprised they aren't seeing any benefit at all, and it makes me wonder about the use cases and case airflow - the problem of an "intake" fan mounted more than a few mm from the panel still applies, after all. But I guess most cases that can fit an L12S or C14S also generally have better airflow characteristics. Still, I've seen people have very good results with ducting coolers like that in mid-size SFF cases.

Oh, btw, it's not announced anywhere, but they have a mounting kit for the FD1 for 25mm fans that you can get for free if you contact customer support.
Posted on Reply
#131
TheDeeGee
ValantarThat makes sense to some degree - the L9x series does sit almost flush with the motherboard, so there isn't much space for air to escape - and escaping air will be turbulent and slow-moving, which likely promotes recirculation rather than it being ejected away from the cooler. Still, I'm surprised they aren't seeing any benefit at all, and it makes me wonder about the use cases and case airflow - the problem of an "intake" fan mounted more than a few mm from the panel still applies, after all. But I guess most cases that can fit an L12S or C14S also generally have better airflow characteristics. Still, I've seen people have very good results with ducting coolers like that in mid-size SFF cases.

Oh, btw, it's not announced anywhere, but they have a mounting kit for the FD1 for 25mm fans that you can get for free if you contact customer support.
I think the C14S works best in a SFF when used as configured out of the box, with the fan blowing away from the motherboard.

I used the C14S for a short while in my Define 7, and when swapped the rear fan into intake (filtered) it dropped temps by atleast 5C. My full fan configuration then was 2x Front Intake, 3x Top Exhaust and 1x Rear Intake. All fans were NF-S12A.
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