Noctua NH-L9a-AM4, Premium Low-profile CPU Cooler for AMD AM4 (Brown)

After getting poor cooling with the stock AMD cooler on Ryzen 1400 and 3600, I opted for this to fit within my mid-sized case and keep the power draw low. A second PC running a 5600G also runs absolutely fine with it but for a bigger CPU or in a case with a hot GPU, I went for the awesome Noctua NH-U12S redux. This is very quiet, miles better than the poor AMD cooler. If you need a low profile cooler that's easy to install (thank you Noctua), this is just the ticket.

The Asrock Deskmini A300 is a very small desktop computer and comes with a stock cooler. The Stock cooler does its job but is a little noisier than most people would prefer. The Noctua NH-L9A-AMA is the recommended cooler for these small factor computers. Asrock deskmini owners are familiar with opening up and configuring the computer so it shouldn't be difficult to fit the cooler. I would say it is fairly easy if the instructions are followed and the job isn't rushed. I fitted the included low noise adaptor because my computing needs are small and i don't do gaming; thus the computer is never going to get very hot. After reassembly, the difference between old and new was a delight. The computer, which is I have vertically-positioned, is now silent. If I stick my ear right next to the exhaust side I can hear a very slight hum. otherwise - nothing. The temperature (linux 'sensors') is stable at around 30°C, slightly lower than previously. All-in-all a great buy at under £35 and I wish I had done this much earlier.

Comes in a very nicely presented box, with a metal case badge, cable to reduce speed, tube of thermal paste, rear mount plate and extra screws in case you want to replace the stock fan with a thicker one. Very weighty and well machined, it all seems very good quality. I fitted this to a Ryzen 3 2200g on an AsRock AB350 Gaming ITX motherboard. It was a little awkward as you have to screw the heatsink on from the underside, while holding it in place and keeping aligned. It's very well mounted though. Most temps seem similar to stock, but with much lower noise. I was always aware of the Wraith Stealth fan whereas in the same situations this is silent. When pushed the fan is louder but still acceptable, and quieter than the Stealth. With a GPU overclock to 1500MHz and gaming on GTA Online the fan seems to get to about 80% speed, so probably has a bit more potential. I'm using this is a very compact case with restricted airflow so my temps are higher than average, hitting about 80C in games that push the 2200g.

it can be difficult to install in a Ryzen board, just the back plate, it's weight and the screws... you have to really take care to avoid damaging the motherboard when fitting this. Also, hard to keep it in place after you put the thermal silicone because of the same reasons above. Once it's setup, it is really silent and can cool a Ryzen 1700 in a passive case with no problems.

Was absolutely ready to throw my PC together, with the help of my step brother to choose parts. Even from my very little knowledge of pc parts, I knew a noctua fan would end up in my mini itx build, and this was the one. Putting it together was fine, a little fiddly at first for a beginner like me but it came together. There was no need to use the brackets that came with my case as it simply screwed onto the motherboard easily enough. Performance wise, it seems to be working just fine -considering the space between my psu and the fan itself, my cpu temperatures stay at around 38°C idle and around 6-65°C when using decently heavy usage games/programs for a good few hours (even whilst streaming them to discord) I've yet to experience it get to the danger zone of 80°C. (Ive also got a noctua case cooler bringing cool air into the case) From my knowledge, the fan isn't loud but I'm not sure whether it's this fan or another one i have installed in my case that could be a little quieter. Overall, works perfectly fine on my first PC build and added to the fun experience of building one!

As always, another great product from Noctua. I have a machine with a Ryzen 5 3400G processor, which until I bought this Noctua cooler, I was using with the stock "Wraith Spire" cooler. It was doing adequate amounts of cooling, but it was really noisy- at least for my needs as a living room PC. I was dubious as to whether this Noctua would make much difference. Some random posts I'd found online suggested that the noise profile of the fans of the Noctua and the stock cooler weren't too dissimilar. However I'm pleasantly surprised - It's made a huge difference. My stock fan would ramp up and down in speed all the time, whereas this is a constant low noise, which is much more pleasing! Plus it's keeping CPU temps in the 30-40's which is awesome!

Using this in an AsRock Deskmini A300 with a Ryzen 5 3400G APU and it keeps the temps under 70C even under heavy load. It's not noisy and was simple to install with the simple bracket supplied. Yes, this is more expensive than other low profile coolers, but I guarantee they won't do the job half as well. Ok, Noctua fans don't look all that nice, unless you are fond of beige/brown combos, but by god do they do the job you buy them for. 5 out of 5 all day long.

Easy to fit ,bought for htpc build , Ryzen 5 3600 , 550 atx power supply, 8gig ram ,2 gig card with no fan,2 x SSD's, Ubuntu with Plex keeps board / and all parts processor temp down below 45 degrees on normal fan settings . pretty quiet as well

You get what you paid for. Price is much cheaper on Amazon compared to other sources

Ich habe den Noctua L9a mittlerweile schon dreimal für verschiedene Systeme gekauft und bin jedes Mal aufs Neue überzeugt. Als jemand, der früher bei einem Mitbewerber im Bereich Kühltechnik gearbeitet hat, kann ich sagen: Noctua setzt seit jeher den Standard. Die Qualität und die Leistung dieses Kühlers sind einfach herausragend. Der L9a ist besonders für kompakte Builds oder HTPCs ideal. Trotz seiner geringen Größe liefert er eine sehr gute Kühlleistung und ist dabei unglaublich leise. Der Einbau gestaltet sich dank der klaren Anleitung und der durchdachten Konstruktion problemlos – auch in engen Gehäusen. Was mich besonders beeindruckt, ist die leise Laufweise. Selbst bei längeren Belastungen bleibt der Kühler nahezu unhörbar. Als jemand, der viele Kühler verschiedener Hersteller getestet und eigene mitentwickelt hat, kann ich sagen, dass Noctua immer der Maßstab für hochwertige und zuverlässige Kühlungstechnologie war und auch heute noch ist. Fazit: Der Noctua L9a ist ein exzellenter Kühler, der in jeder Hinsicht überzeugt. Ich werde ihn auch in Zukunft wieder wählen und kann ihn jedem empfehlen, der auf Qualität, Leistung und geringe Lautstärke setzt!

Exceeded my expectations for the low profile AM4 CPU heatsink, Noctua's customers service is second to none! I first bought the L9a heatsink and had Noctua sent me the AM4 kit free of charge because the at the time the L9a-AM4 wasn't not available yet, the AM4 kit for the L9a arrived at my door in a week but unfortunately I could not remove the bottom plate screws that held the older bracket in place in order to replace it with AM4 one without circling the screws (they were on too tight which is a good sign of build quality but a nightmare to remove in my case). I contacted Amazon and returned the L9a without hassle just as the L9a-AM4 was available on Amazon sold by Noctua and I ordered the L9a-AM4 as the replacement, the heatsink arrived very fast through Amazon's shipping service and I this time around had not trouble mounting the heatsink (which included Noctua excellent NT-H1 thermal compound) on my Ryzen CPU. I needed a low profile cooler which does not exceed 57mm in height and this heatsink did and exceeded the job being both efficient at cooling all the while being quiet on noise, currently I'm able to get a 3.9Ghz overclock on my Ryzen CPU with max temperatures of 70 degrees Celsius under full load and 60 - 65 degrees Celsius when gaming which is quite feat on it's own considering the size of the heatsink and the size of my mini ITX case (which is a Cooler Master Elite 110). All in all a great buy considering Noctua's great customer service, the cooling performance, form factor and noise this heatsink offers for AM4 adopters who need a low profile heatsink...no need to look elsewhere this heatsink is one of the very best.

Lo compré para un servidor que monté y funciona perfecto, no hace prácticamente nada de ruido y se nota la diferencia cuando pasas de usar un ventilador cualquiera a un Noctua. El perfil bajo vino muy bien para un servidor de 2U que monté pero posiblemente funcione también en un servidor 1U sin el ventilador encima (usando ventilación a lo largo del servidor).

Très bon ventilateur, ne fais aucun bruit, prend peu de place !