Noctua NH-L9a-AM4 chromax.black, High-Performance Low-Profile CPU Cooler

The Noctua NH-L9a-AM4 chromax.black has been a revelation for my compact PC build. Its low-profile design, standing at just 37mm, effortlessly fits into my Small Form Factor case without interfering with RAM or PCIe slots, which is a massive win for anyone dealing with limited space. The all-black aesthetic is sleek and perfectly complements my setup's color scheme, adding a touch of class without clashing with other components or RGB lighting. Performance-wise, the renowned NF-A9x14 fan lives up to its reputation. Thanks to the Low-Noise Adaptor and PWM control, my system runs cool under heavy loads without the annoying hum often associated with smaller coolers. It's whisper-quiet at idle, making it perfect for my HTPC setup where noise can be a deal-breaker. Installation was a breeze with the included NT-H1 thermal paste and SecuFirm2 mounting system. It's compatible with a wide range of AMD Ryzen CPUs and APUs, making it a versatile choice for various builds. The 6-year warranty from Noctua is the cherry on top, offering peace of mind that this cooler is built to last. For anyone looking to keep their AMD Ryzen system cool, quiet, and stylish in a compact package, the Noctua NH-L9a-AM4 chromax.black is an unbeatable choice.

I bought this heatsink in order to build a decent gaming computer in a very small case (Geeek A31) and I couldn't be happier. It cools an overclocked Ryzen 5 1600 (3.8 GHz) and never gets warmer than 72ºC under heavy load. The sound of the fan is very low, ideal for a silent computer. Either the fan or the aluminium block are very good quality and look gorgeous. The only drawback is the fact that you have to pay +£10 just to get this black version. If you don't mind the colour, just go for regular Noctua NH-L9a-AM4 so you can save some money.

While the cooler and parts are really well made, the backplate does NOT support all AM4 motherboards, my motherboard has cut outs on the stock backplate for chips so you cannot use the provided Noctua backplate, not unless you cut into it or modify it, otherwise you need to use the screws to mount the fan to mount the block through the stock motherboard backplate and find other screws for the fan to mount to the cooler block. Personally I had to modify the fan shroud a little bit on the edges where the screws go through so that the only screws I had would fit would reach the cooler but you can hardly notice that at all in the case due to it being dark and enclosed anyway (See image of cooler attached) The backplate in use is the stock MSI B550I motherboard one, with the fan screws being the same size thread as the mounting screws I was able to use those to mount things perfectly without any problems (Not my first PC by far, custom building for YEARS so I know when is safe to do so) The backplate provided by Noctua in the listing images do NOT have those extra top and bottom cut outs, something that I missed when I made my purchase so I was unable to use it, but I was able to work around that with an hour or two of carefully tweaking the fan. All in all had I not run into that issue I'd say 10/10 but because the listing did not match what I expected when it said compatible with AM4 motherboards and not being clear I'd say maybe a 9 though I do also take responsibility for not checking the pictures as carefully and tearing down my system before hand to double check, great product otherwise and runs cooler than my 240mm AIO I had before

Use this on an open air system (Hydra). Only a Ryzen 5600 but given how small this cooler is, it handles this with ease. Stress tests around 67/68 degrees fans get to 1900 rpm which you can barely hear. General use sub 60 degrees and inaudible. Perfect for my build and requirements which are not overly demanding.

I bought this cooler to use in an ITX Home Webserver I am building, so far with it paired to the AMD Ryzen 5 2600 CPU I have been very impressed with the way something so small can keep the temps down during my burn-in tests. I saw a reduction of between 3 - 5c when compared to the Stock Wraith cooler. If you are looking for a Low profile Good quality CPU cooler, this should be on your list for purchasing... Don't buy cheap alternatives, spend the money on a decent and you will only have to buy once!

This product is absolutely fantastic. I have a small pc and the stock amd cooler was obnoxiously loud in order to keep my pc cool, this fan is almost silent under most normal situations and only notice it when under heavy load. My temps have been fantastic since using this, the performance is incredible for the small size of this cooler! couldn't recommend enough for others with small form factor pcs!

What's there to add? Solid build quality. Virtually silent under normal load; fantastic cooling performance; one of the lowest profile coolers on the market despite its performance. Plus the new black designs (instead of silver/beige/brown) looks even better too!

I recently picked up the Noctua NH-L9a-AM4 chromax.black for my AMD build and overall, I’m pretty pleased with it. First off, the black finish looks sleek and really helps with the aesthetic of my setup. It’s a low-profile cooler, so if you’re working with small cases or just want to keep things tidy, this thing fits perfectly. It’s got a compact design that doesn’t take up too much space, which was a major selling point for me. Installation was straightforward, thanks to the included mounting kit. No confusing instructions or complicated steps here, just a simple process that didn’t take long at all. The cooling performance is solid for daily tasks and light gaming. I’ve noticed my CPU temps stay nice and manageable, even during longer sessions. However, there are a couple of things to keep in mind. First, if you’re planning on heavy overclocking, this cooler might not be the best choice. Even though it does a decent job for regular use, it can struggle a bit under heavy loads. Also, the fan can get a tad noisy when ramping up, especially compared to other coolers I’ve used. It’s not overwhelming, but it’s noticeable if you’re sitting in a quiet room. All in all, the Noctua NH-L9a-AM4 chromax.black is a great option if you need a reliable low-profile cooler for your AMD build. Just keep in mind that it’s not designed for extreme performance, and you may notice some fan noise under load. If you’re okay with that, it definitely does its job well and keeps my system nice and cool.

El ventilador es una maravilla, muy silencioso y además de perfil bajo, ideal para cajas compactas. En mi caso lo he usado en un NAS casero metido en una caja MiniITX y con una CPU AMD Ryzen 5 que apenas se calienta. Lo pagas en el precio eso sí, pero el que compra Noctua sabe que compra calidad.

Can't go wrong with Noctua fans. It was delivered as shown in the listing. Came well packaged. Fan is silent, i hardly hear it playing games with a ryzen 5600x and 3060 (single fan) gpu.

Joue très bien son rôle de refroidissement et en plus super silencieux, pour l'installation nécessite le démontage de la CM pour utiliser le support fourni .

I have four fans yet the cpu fan is spinning pretty fast on my ryzen 5 3600cpu. Buy only! For small builds and nothing else!

I recently purchased the Noctua NH-L9a-AM4 chromax.Black Low-Profile CPU Cooler from Amazon. The delivery was speedy and on time, as expected with Amazon Prime. Upon unboxing, I found the cooler to be smaller than I initially expected, especially compared to my previous NH-D15 chromax.black. However, the packaging was excellent, with Noctua including everything needed for installation, such as thermal paste and a backplate. Installation was straightforward and easy. As an IT professional, I found no issues with the process, which involved cleaning the CPU, applying thermal paste, and screwing down the cooler with the provided components. In terms of performance, the cooler works surprisingly well. While I haven't conducted stress tests, it keeps the CPU cool during normal tasks. Initially, the cooler was a bit noisier than expected, but after installing the appropriate drivers and completing startup processes, it became much quieter. The aesthetics of the cooler are impressive. The black design fits seamlessly with the rest of my system, and the low-profile form factor helps reduce the feeling of cramped space inside the case. Overall, I believe the Noctua NH-L9a-AM4 chromax.Black is worth the money and would recommend it to others. I am very satisfied with my purchase and plan to continue using Noctua coolers in my future builds.