Noctua NH-L9a-AM4 Low Profile AM4 CPU Cooler

Reduced my CPU temperature quite significantly when compared to the stock AMD Wraith Stealth Cooler. This Noctua cooler also runs with less noise. Overall great purchase.Although I would have bought a high-profile cooler if it wasn't for my tiny case.

Awesome high quality product

At first I thought that I could possibly be paying way too much for a cpu cooler. I was doing a build for my father who wanted a very small a discrete build. I needed to chuck the stock cpu cooler and go for something far smaller, yet would still keep his cpu cool. This was the solution. The packaging was very well done. Everything is presented in a high class top notch product. It was like buying a mercedes benz compared to buying a honda (nothing wrong with either but you get my drift). I would definetly recommend to anyone looking for a more slimmer build that needs a smaller cooler.

Easy installation and good temps

I got this cooler to replace a stock AMD cooler where the stupid RGB fan died. It took about ten minutes to install. It leaves plenty of clearance in the mini-tower case I’m using. I put this cooler on an AMD Ryzen 7 1700X. Temps at idle were about 35c. I didn’t see the temps get over 55c. The fan is pretty quiet as well. Recommended.

Excellent ! (One egg was because it took 17 days to arrive) Deserves 4 eggs, maybe 5

Purchased for an Asrock A300w Mini build, with a Ryzen 3200g. The quality is obvious. The color is meh, but is only noticeable because it fills the entire side of the tiny case. Not exactly silent, but quiet. Probably gross overkill for cooling in this setup. Packaged in a foam-lined case like a fine watch: even the screws are set in foam cutouts. Even though Newegg said that it ships from Noctua, it arrived in a Newegg box with another order. The box had meandered around the country, was well crushed by the Postal Service (no damaged items), and took a full 17 days to arrive. Do not use Egg Saver, UPS to USPS, I beg you!

Looks nice. Installation is very jenky. Plate failed upon install.

Overall a bad design with long screws which are very inconvenient to install and end up going through the back plate instead of tightening down onto it. Would not recommend. this need to be far better designed. Maybe this was the budget offering but don't buy this. Spend more and find a better more robust design. I've been building PC's for over a decade and this is the worst cooler install experience I've had so far. RMAing.

Noctua NH-L9a CPU cooler doesn't falter when you max out your cores

The Noctua cpu cooler is a quiet, compact CPU cooler that fits very nicely inside my ITX-mini case. It was easy to install, and it has run without incident as I've maxed out my new linux box with multithreaded applications in scientific computing. I have no trouble keeping all 16 virtual cores busy handling thousands of queued threads running in parallel on my midrange 8 CPU Ryzen chip, and while I can hear the fan spin up, it hasn't been a bother, and there has been no adverse overheating, even with sustained maximum use.The hardest part was unpacking the *naming* convention. Noctua NH-L9a is for the AM4. The Noctual NH-L9i is the intel mothernboard version. The difference is clear *after* you see them side by side, but not before. Microcenter was decent about ... MoreThe Noctua cpu cooler is a quiet, compact CPU cooler that fits very nicely inside my ITX-mini case. It was easy to install, and it has run without incident as I've maxed out my new linux box with multithreaded applications in scientific computing. I have no trouble keeping all 16 virtual cores busy handling thousands of queued threads running in parallel on my midrange 8 CPU Ryzen chip, and while I can hear the fan spin up, it hasn't been a bother, and there has been no adverse overheating, even with sustained maximum use.The hardest part was unpacking the *naming* convention. Noctua NH-L9a is for the AM4. The Noctual NH-L9i is the intel mothernboard version. The difference is clear *after* you see them side by side, but not before. Microcenter was decent about swapping my mispurchased Intel version for the correct AMD version.

One of the Best Fans!

When I decided to swap my build into a new case, I figured I would finally upgrade past the stock cooler I got back in 2018. I didnt think it would give me too much of a performance boost at first, but It ended up helping keep my CPU a lot cooler than it used to. Honestly the colors will eventually grow on you, if thats something you care about!

Silent and efficient CPU cooler

Use it in a Asrock Deskmini X300 with Ryzen 5700G APU. Runs silent under full load.With a 5700G APU I`ve measured idle: 30dgr and full load: 85dgr.Easy to mount, there is even thermal compound paste included in the package. I order Thermal Grizzly (which has a better thermal conductivity) and did not use the Noctua paste.I would have preferred a black fan in stead of the off-white cooling fan. The off white cooler is visible in the deskmini housing. Maybe I`ll replace it in future for a 12cm fan.

The color is just eww

Overall, this cpu cooler serves its purpose.My case has two motherboards in it and the stock Wraith cooler on the second board was obstructing my second and third PCI-e slots. This cooler does run several degrees hotter than the Wraith Cooler due to having a smaller heatsink. It was slightly difficult to install on the mini-ITX board due to the wider spread of the heatsink. But these problems were expected going into it.On the plus side, the fan is sufficiently silent even without the low noise adapter, which I would not suggest using as it makes the cooler run even hotter.My biggest complaint is that the fan is not a standard size fan, and as a result I'm stuck with the hideously ugly colors that don't match the rest of my case at all. It would be nice if ... MoreOverall, this cpu cooler serves its purpose.My case has two motherboards in it and the stock Wraith cooler on the second board was obstructing my second and third PCI-e slots. This cooler does run several degrees hotter than the Wraith Cooler due to having a smaller heatsink. It was slightly difficult to install on the mini-ITX board due to the wider spread of the heatsink. But these problems were expected going into it.On the plus side, the fan is sufficiently silent even without the low noise adapter, which I would not suggest using as it makes the cooler run even hotter.My biggest complaint is that the fan is not a standard size fan, and as a result I'm stuck with the hideously ugly colors that don't match the rest of my case at all. It would be nice if there was a black or clear fan that would fit on this, preferably with an RGB option.

Very quiet

I bought this in an attempt to make my Asus prebuilt quieter. It worked very well. No performance lost versus the stock cooler. No performance gained either though. If you are looking for a very quiet product look no further. Does its intended purpose.