Noctua NH-L9x65 Review

Being the best when it comes to low noise and excellent performing coolers, Noctua continues to provide everyone with some of the best CPU coolers such as the NH U12S, NH D15, and a lot more. The company’s goal is to continuously offer top-notch and high-quality coolers which have earned them a place in the systems of a lot of enthusiasts. Though we wonder if their NH-L9x65 cooler can continue this trend.

The company’s new NH-L9x65 cooler is a small, low profile form-factor cooler that has a lot of great features that can make it one of the best performers of the company; but before we claim its excellence and great performance, let us first learn more about the product, its features, specifications, and how well it performs when utilized.

But first, let’s go ahead and see what’s included in the package of this CPU cooler from Noctua.

Noctua NH-L9x65 Review – What’s in the Box?

For this cooler, Noctua decided to utilize their classic theme with standard packaging design and graphics which has been utilized for a couple of years now. This is simply to keep their products in a very recognizable package so everyone knows that the device you have is from Noctua. When you look at the package, you’ll find the name of the product on the left portion of the box’s front so it’s definitely not hard to miss. The larger section on the right has been utilized to display the cooler’s compatibility, height, NF A9 x 14 fan, and that it also features the Secu Firm 2 mounting hardware. Moving to the right side of the box, you will find a panel that features a thorough and detailed specifications chart on its left; this will allow you to learn more about the cooler’s specifications which you can refer to for further information. On the right portion of the panel, you’ll find a couple of UPC codes as well as dimensional renderings present.

At the back of the package, Noctua explains how the NH-L9x65 cooler was created and the details have been explained in a total of eight different languages; this is to cater to the customers where the company mostly ships out their coolers to. After these, there were no more important details about the product, so we went ahead and opened the box to see what’s inside, other than the NH-L9x65 cooler itself. Once you open the box, you will immediately see the accessory / hardware box right at the top; the company did put a lot of effort into the packaging of this cooler since the NH-L9x65 itself and other items included were well-packed to prevent any damages. The hardware box features graphics that display the box’s contents and generally; we really love how Noctua organizes their packaging, keeping things set neatly in place so you can easily find everything that you need.

As for the hardware set, it features the company’s classic Secu Firm 2 mounting system which includes mountings for the latest AMD and Intel sockets. This is something that’s typical with Noctua but we really like how clear their instructions are; plus, they also include illustrations that are printed in color, making things easier to follow once you get your hands on the NH-L9x65. The company surely goes an extra mile to make your installation process a snap so you can easily and readily utilize their CPU coolers.

The Product

Noctua NH-L9x65 Review – Consistent Quality And A Brand You Can Trust

The Noctua NH-L9x65 is a cooler that comes with a fan attached to it; it generally has a low profile and measures 65 millimeters tall while weighing 413 grams with the fan connected to it. It’s clear that this cooler can be ideal for small form-factor or small HTPC cases that can’t really support a much taller cooler. The NH-L9x65 also comes with the NF A9 x 14 premium 4-pin PWM fan plus a power lead that is encased in a finely-made black rubber cover. If you flip the NH-L9x65 over, you’ll see that its base is concealed with a clear plastic cap that can easily pop out before the installation process.

The Noctua NH-L9x65 utilizes a total of four heat pipes that pull the heat from the opposite sides of the cooler’s base; this will channel the heat into the device’s compact fin stack. Since the cooler sports a down-flow style, you’ll surely get the benefit of extra air being circulated onto the motherboard; this will help cool the VRM, RAM, as well as the other components of your motherboard. To further maximize the cooler’s surface area, its fin stack is made with a total of fifty cooling fins while there are two available notches on each opposite side; this allows adequate access to the retained mounting screws that are available. When it comes to the Noctua NH-L9x65’s finish and fit, they’re definitely top notch and quality-made, something that is a standard for Noctua’s products.

If you look at the sides of the NH-L9x65, you’ll see the four copper heat pipes that are nickel-plated, as well as the maintained screws located on the mounting brackets on the side. If you look at the base, you’ll see the four heat pipes that spin 180° up to the fin stack that is fixed over the cooler’s base. All of these aid in keeping the envelope at its lowest for tighter builds that usually need much smaller coolers. The NH-L9x65’s NF A9 x 14 fan has a thickness of just 14 millimeters and it also features the company’s proprietary Advanced Acoustic Optimization or AAO frame, plus its outstanding aerodynamic design.

The Pulse Width Modulation or PWM is a common feature today in a lot of devices since it lets you have a completely automatic speed control. Its impellers feature suction-side Flow Acceleration Channels which help speed up and increase the airflow right at the outer blade’s regions; this decreases the suction side-flow split which allows the Noctua NH-L9x65 to stay incredibly quiet. This is something we really liked when we tried out the cooler – it was extremely quiet despite being utilized for prolonged hours.

In this portion of our review, we are going to talk about the specifications of the Noctua NH-L9x65. For its socket compatibility, it can go with the Intel LGA 2011-0, LGA 2011-3, LGA 1150, LGA 1151, LGA 1155, and LGA 1156; it is also compatible with the AMD, AM3+, AM3, AM+, AM2, FM2+, FM2, as well as FM1. Without the fan, the CPU cooler measures 51 x 95 x 95 millimeters and weighs 340 grams; with the fan, it measures 65 x 95 x 95 millimeters and weighs a total of 413 grams. The materials used to make the Noctua NH-L9x65 include copper for the base and heatpipes, aluminum for the cooling fins, and nickel for the plating.

The Noctua NH-L9x65 has a low profile because of its compact heatsink and the NF A9 x 14 fan but what’s great about this cooler is that it has a hundred percent RAM compatibility for the Intel platforms. The cooler features a 95 x 95-millimeter footprint that adequately complies with the LGA 115x socket keep-out zone from Intel. This only means that it won’t cause any issues to the chipset coolers and won’t overhang the available RAM slots; this makes the NH-L9x65 completely compatible with much taller modules.

The cooler also has a hundred percent compatibility with the ITX PCIe cards which is usually fixed close to the 95 x 95 socket zone. Bigger devices that go over this zone usually blocks the PCIe slot but the 95 x 95 millimeter-sized Noctua NH-L9x65 offers adequate compatibility with these PCIe cards. Additionally, the cooler also provides you easier access to all components and connectors that are usually impossible to reach in a lot of low-profile coolers that utilize much larger heatsinks or fans.

Another very useful feature of the NH-L9x65 is its NF A9 x 14 premium fan since this has the company’s outstanding aerodynamic design measures and proprietary AAO frame. The fan supports PWM for complete automatic speed control, allowing the NH-L9x65 to maintain its quietness despite long hours of usage. We tried this out to see if it really stays quiet and to our surprise, the cooler was able to maintain its low level of noise the whole time which made us like this device even more.

To add more quality to the cooler, the NH-L9x65 also includes the Secu Firm 2 mounting system from Noctua which ensures maximum convenience, as well as excellent and adequate contact pressure on all the current sockets. For the overall features of the NH-L9x65, we’re giving Noctua a thumbs-up for these.


  • Socket compatibility Intel LGA2066, LGA2011-0 & LGA2011-3 (Square ILM), LGA1156, LGA1155, LGA1151, LGA1150 & AMD AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+ (backplate required), AM4 with NM-AM4
  • Height (without fan) 51 mm
  • Width (without fan) 95 mm
  • Depth (without fan) 95 mm
  • Height (with fan) 65 mm
  • Width (with fan) 95 mm
  • Depth (with fan) 95 mm
  • Weight (without fan) 340 g
  • Weight (with fan/s) 413 g
  • Material Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
  • TDP see TDP guide
  • Fan compatibility 92x92x14, 92x92x25
  • Scope of delivery
  • NF-A9x14 PWM premium fan
  • Low-Noise Adaptor (L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm2™ Mounting Kit
  • Noctua Metal Case-Badge
  • Warranty 6 Years


We tested the NH-L9x65 and the results surprised us since we didn’t expect much after seeing the cooler out of the box – we tell you, looks can really be deceiving, even with coolers such as this NH-L9x65. The fan delivered around 30 CFM of airflow to the cooler and the device took up a little more room compared to the stock solution, which was probably due to its square shape; it has four short heat pipes that only runs through half of the cooler. Because of this, we actually had a few doubts about the NH-L9x65 and that it wouldn’t really be that much of an efficient cooler, but when we tested it, it exceeded our expectations so we’re really liking that about the NH-L9x65.

We also tried overclocking which made the cooler go beyond its “safe zone”. For the stock testing, the cooler performed excellently; plus, we have to stress on this because the NH-L9x65 was still extremely quiet. Performance-wise, we’re giving the Noctua NH-L9x65 a double thumbs-up for its excellent performance.

Using the Product


Although the Noctua NG-L9x65 may not be for everyone’s needs, we believe that this is the best product in the market of small coolers. It can cool a powerful CPU such as the high-end Intel 2011 range despite its size, which is why we think it is an excellent choice for server deployment, workstations, and even mid to high-end CPU with moderate overclocking. In our test, the Noctua NH-L9x65 also exceeded the boundaries of the performance of coolers that are similar to this.

Overall, the NH-L9x65 from Noctua is an excellent product. It has a great build quality with a neat design, it’s quiet, and despite its compact size, it’s also one of the best-performing coolers we’ve ever tried. If you’re looking for smaller CPU coolers that have top-notch features and performs excellently, we highly recommend the Noctua NH-L9x65 CPU cooler.

Where to Buy

Grab yourself the NH-L9x65 from your favourite PC retailer. For more information head on over to the official product page.

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