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Item#: N82E16835608029

Noctua NH-L9i 95mm SSO2 CPU Cooler

  • 2500-2999 RPM
  • 57.5 CFM
  • Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
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The NH-L9i is a premium quality quiet CPU cooler for Intel LGA115x based HTPCs and Small Form Factor systems. At a super-low profile of only 37mm, the NH-L9i is ideal for extremely slim cases and due to its 95x95mm footprint, it provides full compatibility with tall RAM modules and VGA cards on mini-ITX mainboards. The custom designed SecuFirm2™ mounting system for LGA115x makes installation a child's play and thanks to the highly optimised NF-A9x14 premium fan that supports fully automatic speed control via PWM, the NH-L9i runs remarkably quiet. Topped off with Noctua's renowned NT-H1 thermal compound, the NH-L9i fuses everything users have come to expect from Noctua's larger coolers into a super-compact package for slim HTPC systems.

Learn more about the Noctua NH-L9i

Quick Info


  • Limited Warranty period (parts): 6 years
  • Limited Warranty period (labor): 6 years

Customer Reviews of the Noctua NH-L9i

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  • Michael L.
  • 3/8/2015 9:55:44 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsgreat little cooler

Pros: Small, quiet, extremely well built, nice finish and packaging

Cons: none-- it does what it's supposed to do

Other Thoughts: I needed a cooler with a very small footprint for my small mini-itx build, and this was the best fit. Had an installation question and contacted Noctua customer support, and they responded immediately and were very helpful!

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  • jason w.
  • 2/25/2015 5:22:40 AM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsElegant and amazing

Pros: My first Noctua HSF. I wish they would make water coolers. I need water cooling on my primary desktop, but would love to run all Noctua coolers in all of my systems, based on my experience with this one alone. The packaging probably adds to the price of the unit, but when you open the box, you will be wowed. Elegant, professional. The unit itself is heavy (stout) and much thinner than I imagined. Left me more room in my Silverstone case than I had thought.

Cons: Price. But you get what you pay for. Certainly not worth knocking an egg off.

Other Thoughts: Replaced a stock Intel HSF on an I7-2600k. Running at stock speeds (for now). Idle temps stayed the same. Under load, stock HSF ran 42C, the Noctua runs 32C. Both fans were run at max (gonna play with BIOS settings if and when I try to overclock) and the Noctua is quieter (but not silent, obviously, at max speed). Would buy again, in fact, I may replace all the coolers in my SFF mITX systems with this one.

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  • hamza
  • 2/17/2015 4:46:57 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat small form factor

Pros: Small form factor
simple square shape
only 37mm high including fan
great air flow for a fan thats 120mm
very quiet fan
noctua quality build

Cons: pulls air in and you need to purchase other screws to invert the fan
works better for 65 watt cpus
doesn't handle heat as well as a more beefed up noctua

Other Thoughts: I would definitely recommend this unless you run into the problem where the heat sink air flow gets boxed by the ram , the gpu and motherboard heat sink which defeats the purpose of the cooling the cpu

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  • Lorena P.
  • 2/15/2015 8:09:10 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

5 out of 5 eggsGreat Product

Pros: - Quiet (with low noise adapter included)

- Provided thermal paste and mounting solutions are rock solid and easy to install.

- Beautiful packaging and build quality

- Extremely low profile, absolutely no problems from height of the cooler, and no ram interference.

Cons: none

Other Thoughts: This cooler was purchased for a custom pc build inside of an NES; space was at a premium, and airflow was low, however, this cooler has really pulled through! there is no trouble with my ram modules, and it leaves lots of room from the top of the case; almost being shorter than my standard height ram modules! absolutely wonderful product.

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  • Salinder S.
  • 1/18/2015 8:58:43 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsExcellent Cooler

Pros: I bought this to replace the stock cooler for my Core i5 processor and the low profile design made it fit perfectly on my Mini ITX board inside my Corsair Obsidian 250D.

The easy to install mounting system made the entire installation process painless.

The low noise adapter was a nice touch although I didn't end up using it.

The quality is excellent as I've noticed a 10 degrees drop in idle CPU temperature when operating the cooler at full speed.

Cons: I haven't encountered any problems with this so far, although it does tend to make a fair bit of noise at full power which was required when gaming.

Other Thoughts: Overall awesome cooler. Very pleased with the results, my CPU runs a lot cooler than stock. As expected, excellent quality from Noctua.

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  • Curtis W.
  • 1/8/2015 6:31:56 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWorks great in my HTPC

Pros: Easiest cpu cooler I have ever installed. The packaging was incredible. Everything was neatly packed in the box and the first thing I said was "WOW".

Now, for my HTPC, I have had no reason to run benchmarks and such, so I can't tell you how well it would perform under a full load. but I have the Intel Pentium G3258 and it keeps it at around 25C when just doing it's normal tasks like running media center for me.

Now onto the best part. The fan itself. I have never heard a fan so quiet in my life. I still can't figure out if it is even running sometimes without taking my side panel off to check for sure. <- fail, I know. But i DEFINITELY recommend this cpu cooler for a HTPC setup.

It's size is small and still works incredibly.

Cons: Not a thing

Other Thoughts: For my purposes, it works incredibly. But I'm sure it is not enough for actual gaming. But for anyone looking for a silent computer to run daily tasks or a Home theatre setup, this cpu cooler is a must buy.

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  • Guy S.
  • 12/31/2014 8:54:08 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsIt oozes quality

Pros: Extremely well crafted. You can see the quality. And completely fixed the cooling problems I had when I built a new computer using the stock cpu cooler.

Cons: none

Other Thoughts: Requires screwing the cpu cooler underneath the motherboard. Tip: when installing the cooler, put the mother on top of and between two objects to hold the center of the motherboard above the ground. Then you can apply the compound, cpu, and then screw the cpu cooler underneath the motherboard without any problems.

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  • nancy m.
  • 12/24/2014 11:55:27 AM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsFANtastic cooler

Pros: Fits nice, easy to seat, nice packaging, heavy construction heatsink, stellar paste

Cons: Noctua fans are uglier than a stupid chick.

Other Thoughts: So I literally just got this baby installed around 10 minutes ago. It replaced a stock cooler for an i5-4690k. This is my first build and I went with the ASUS Z97I Plus mobo. When I installed the stock cooler I didnt really understand the way the push and twist plastic pins works and I snapped the little sleeve the pins go through on the fan housing. My temps were running around 73 to 90c, so I shut the pc off investigated and figured out the problem.

This little cooler installed fast as all get out. The presentation for the cooler packaging is mighty spiffy. The thermal compound seems pretty nice. The name badge looks fantastic on my In Win 901 from NewEgg at a steal - 130 shipped! Even given the somewhat restrictive airflow options the case offers this cooler is keeping my cpu at around 38 to 42c. I doubt I will run a stress test, though. I already know this cooler isnt made for my CPU power use, but it fits, was easy to get seated, and is working way better than the stock potato I turned into french fries!

0 out of 1 people found this review helpful. Did you? Yes No

  • Matthew C.
  • 12/13/2014 12:37:57 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat for It's Size, OC's Too

Pros: - Quiet at lower fan speeds
- Super low profile
- Simple to install
- Decent cooling performance, even with mild overclocks

Cons: - Limited cooling capacity

Other Thoughts: I bought this cooler to replace the H100i in my Corsair Air 240. The H100i was great, but the Corsair link software was nothing but headaches. I wanted to go back to the simplicity of air cooling, but there were only a couple of air coolers that would fit my motherboard and case. I chose this one because it is the best one available that also fit in my rig.

I have this cooler installed over an i5 4670k on an MSI Z87i Gaming AC mITX motherboard. The CPU is running at 4000MHz on 1.240 Vcore. I got a bad chip that takes a lot of voltage to OC, and this cooler does a surprisingly good job at keeping the temps in check. At 24C ambient, the core temps never go over 88C in Prime95 stress testing. It seems a bit hot, but in everyday use, the cores stay under 65C during intensive gaming and video editing.

There are 2 key things to remember with this cooler. #1 is to make sure the cooler is arranged so that the hot air coming out of the heat sink is not being directed at your RAM. The RAM modules can impede air flow over the heat sink if they are blocking the fin gaps. #2 is to make sure you have a lot of air flowing through you case. This is a downdraft cooler, so it is already at a natural disadvantage. You don't want to stifle the poor little guy with inadequate case air flow.

In short, the NH-L9 coolers are surprisingly good for their ultra low profile. Interestingly, the metal case badge that comes with the L9 is exactly the same size as the Corsair badge on the front of the Air 240. I took the Corsair badge out and replaced it with the metal Noctua one. It looks like a factory part!

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  • Willliam D.
  • 12/6/2014 10:20:30 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

Pros: Has a very small and thin form factor, great for HTPCs or whatever else you are doing with a small system.

Cons: Not as good at cooling as other coolers which are bigger

1 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16835608029
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