It is a beast in size but also in performance, a very good air cooler that you won't need to replace for a very long time!

Noctua needs to take a look at this issue with their prices when for the same amount of money you can get a good water cooler or for half the money almost the same performance air cooler...

You should know if you want a third fan to get the Noctua NF-A15 HS Case Fan 140mm with 4-Pin PWM connection, it simply doesn't come with a third clip; you will have to get it from the company NOCTUA for free, only you need to prove that you purchased it!

For 2.5 years now, it works like the first day! No problems! I have it on a 5800x3d

Perfect cooler, huge with plenty of cooling capacity. It cools the 5950x, I benchmarked it at full load, it reached all 16 cores at the maximum stock clocking of 4.9GHz and was around 82 degrees while it is designed to reach and operate continuously if needed at 90 degrees.

So this cooler allowed the processor to go to the max without even reaching the maximum temperatures. There is no reason to use liquid cooling when there are such monsters with such a high TDP allowance.

What can I say that hasn't already been said about this cooler? A beast in both size and performance. Expensive, but you'll have peace of mind, as well as your ears since it's completely silent. It keeps my Ryzen 5600 at 35°C idle and I haven't seen it go over 60°C under load. However, be careful with RAM clearance because it doesn't fit well with tall kits. I highly recommend it if you don't want an AIO

Buying such an air cooler ensures that you will never have a leak like with water cooling. It provides similar cooling performance to even the most expensive water coolers. With the AMD Ryzen 5600x, all games never go above 60 degrees in the summer. It has a gentle noise level under load. In addition to this, it also provides airflow to the case. The support from the Noctua website is very good.

What can one say about Noctua? The company knows what it's doing. In a Li Li Airmen Mini case with an i5-12600K during the summer with 40 degrees Celsius outside, it runs idle at 32 to 33 degrees and reaches a maximum of 57-60 degrees while gaming. During the winter, I have seen it idle below 20 degrees. However, all of this also depends on how you have built your rig. This black one also has a socket 1700 inside the case if I remember correctly. It says it has liquid cooling. Fan control is also necessary, if you haven't installed it yet, do it and set the curves correctly, and you're good to go.

In 13600K cinebench R23 multicore/singlecore reached up to 74-75c with 10 minutes of usage for testing.

Positives:
+ Quality
+ Performance
+ Silent

Negatives:
+ Price
+ Size

It requires careful attention to the size. The dimensions mentioned are only for low profile RAM. Check the size of the RAM and the clearance to understand the volume it will occupy. With high profile RAM, it exceeds 17cm.

Up to 13700K, it is okay in terms of cooling.

This Noctua cooler has excellent performance and manages to achieve very low noise levels.
+ Performance
+ Quiet
+ Easy installation

- Expensive
- Creates issues with RAM clearance

I own the Dark Rock Pro 4 from Be Quiet! and also the Arctic Freezer 50, both from the same category of air coolers. Personally, I prefer the Be Quiet! because it has better RAM clearance, and the Arctic Freezer 50 because it offers better value for money (although RAM clearance needs attention here)

The best cooler on the market
Attention only to whether it fits in the case and the height of the RAM
For the 2nd, there is a solution to put the 2nd fan higher (if it fits in the case)

Buy it with your eyes closed if you don't want to install liquid cooling. I had previously installed a Cooler Master ML360 liquid cooler and within a year the pump failed. The Ryzen 5600X reached 80 degrees Celsius and it was generally noisy. A triple fan cooler is not worth it, guys. Noctua offers the best air cooling with idle temperatures at 32 degrees Celsius, which is the same as when I had the liquid cooler, and maximum temperatures of 50 degrees Celsius during gaming. It is also much quieter, with less noise compared to liquid cooling. It requires a large case, I have it installed in the H500P Mesh White and it fits perfectly, with enough space for everything and good airflow. It has two 200mm fans in the front, one 140mm fan at the back, and two 120mm fans on top. The case is a beast!

I installed it on a 10-year-old computer with liquid cooling that was malfunctioning in the last semester. From 80 - 90 degrees with liquid cooling, it immediately dropped to 40 - 45 degrees with the Noctua!

The installation is very easy.. Opening, cleaning old paste and dust, uninstalling liquid cooling and installing the Noctua took me about 20 minutes.

Tip: If the fans are not installed correctly, they may be slightly loose and make some noise. Simply remove them and reinstall them. Under normal conditions, the cooler is silent.

The I9-11900 has very good temperatures, 35-37C in normal use, while in Games 4k HDR max it reaches 78C. Completely silent.

Simply the best choice, buy it with your eyes closed. Be careful if you have a small box, it may not fit.

I have the 5900x, depending on the load on the processor, it has never reached a speed cut due to temperature. It is a bit expensive but it is the best air cooling available, quiet and easy to install. Finally, Noctua's customer support is one of the best out there.

I made her cool down a 10700k to 5ghz and from temperatures around 90 to 95, I lowered it to 4.8 and it went down to 85 degrees. But what's the point when you have a big GPU that raises it to 95 degrees, it's a one-way street to custom water cooling and that's what I did and the results are a CPU at 5ghz + 2080 super at 2150ghz never going above 70. Not to mention that my Noctua covered everything and the aesthetic result was terrible but also non-functional since it covers the VRM heatsink, resulting in overheating.

I have it with the R9 3900x from where I had the stock cooler, before I couldn't reach the CPU's boost, now I reach 4650 on 4 cores (4600 is the CPU's cap on 1 core) in HWInfo.
I use it heavily for gaming, video editing, and software compiling, and I feel like I have a new PC with the cooler change!
NZXT H500i case

I have a Ryzen 5 3600X. It stays at 32.8 degrees Celsius when idle. It is quiet when idle or during browsing. I have the Meshify C case from Fractal Design (which is quite open from all sides) and I don't hear anything when it's next to me. When you open a game, it starts working but it is completely normal and not bothersome for me. Also, I should mention that the Meshify C can fit a second 140mm fan with G.skill RAM (which is considered not very low profile) as long as you "slide the fan a bit further out" and everything is fine.

10700k, 1.4v, 5.0ghz
Cinebench 93c
The cooler is perfect, I have it at 60 to 65 degrees and it doesn't make any noise...
It is a great achievement to cool this beast in cinebench, so it deserves 5 stars and more.
Before, I had the H115i (2x140mm) aio and the noise was day and night, throughout the fan curve but especially at 100...
Comparatively, the performance is the same or better than the H115i, definitely not worse.
Since I mentioned cinebench, I don't need to talk about gaming...
My case is the Corsair Air 540.

Buttoned on a Ryzen 5900x... In the summer, the maximum temperature was 75 degrees while playing CPU-intensive games. Now that winter has started, at room temperature, it doesn't exceed 65 degrees. Before, I had the Scythe Fuma 2, which was very good, but it's not like the Noctua. In terms of temperature, noise, etc... besides the volume, it's considered the top choice for a high-end PC... if you don't go for liquid cooling.

Simply the best cooler I put on my Ryzen 5900x

Unfortunately for me, things did not go well with this specific cooler. Coming from a Cryorig H7 that cost 40€ to something that costs 100€, I expected better results. I installed the cooler around 10 times because I thought I was doing something wrong, but every time I had the same result.
Cryorig H7 with i5 10600k at 4.5ghz stock reached a maximum of 80 degrees according to hardware monitor.
Noctua NH-D15, again at 4.5ghz, reached a minimum of 75 degrees out of the 10 times I tested it.
I can say that the Noctua was slightly noisier, not by much, but its presence was definitely more noticeable. Of course, the tests were done with the Noctua's thermal paste as well as with MX4 and the Cinebench R20 benchmark.
I will investigate further because it still doesn't make sense to me why a cooler like this would have such performance.

It's an amazing cooler!! I put it on an i7 47700, which had the Be Quiet Pure Rock Slim, and in Warzone it reached 75c. With this one, I calculated 5-8 degrees lower. It gave me a whole 20 degrees!!! It's fantastic. A bit bulky but worth it for the cooling it provides and the almost nonexistent noise. I highly recommend it. The best in cooling!!!

It does everything one would expect from a flagship cooling product from Noctua.

+ Excellent cooling performance
+ Extremely easy installation (the easiest custom one I've ever installed)
+ Nice design (the reason I avoided this specific one in the past was the color!)
+ Premium feel (from the packaging to the included tools)

Used on AMD Ryzen 5900X

What was once ThermalRight, is now Noctua for several years.
By far the best CPU air coolers.

The NH-D15 is the best performing cooler from Noctua.
It is quite bulky. But the silence it provides, and its cooling performance that surpasses everything beyond custom built high-end watercooling loops, is something else.
You can cool even the hottest processors quietly, even with the fans running at 35-40% of their speed.
If you upgrade to a newer processor and socket... no problem, Noctua will send you a free mounting bracket for your new motherboard.
Their after-sales support simply doesn't exist.

Don't think too much... if you want performance in overclocking CPU and at the same time... your peace and quiet, a big Noctua like the NH-D15, NH-D14, U12S, etc. will make you happy! (and you will immediately start replacing your other fans with the more efficient and at the same time much quieter Noctua fans ; -) )

The best thing for Ryzen 5 3600 is simply perfect temperatures that I haven't seen since 2019 when I built my PC. With my eyes closed, in games where I used to reach 75c, now it reaches 50c, everything works perfectly now!