NoctuaNH-L9x65, Premium Low-Profile CPU Cooler (65mm, Brown)

This CPU cooler is probably the best choice on the market for anyone trying to cool a performance processor in a Mini ITX case like my Cooler Master Elite 130. Initially, I was scared away from this by the height of this cooler because my case specs said I only had 65 mm of clearance, but the true clearance is probably around 75 mm so this cooler fits just right under the PSU. Keep in mind, these will cool the S or T series Intel chips phenomenally, but for K processors like my i5-4690k, you are going to be seeing warmer temps, even though they are reasonable if you really can't fit a bigger tower cooler.Performance (4/5):I idle between 35-40 degrees C with an i5-4690k OC'ed @ 4.0 GHz. Load on The Witcher 3 with my GTX 970 adding some heat to the case is <= 72 degrees C. A torture test I ran using EVGA OC Scanner reached 90 degrees C after 10 minutes, which is worrying but still under TJMax and well out of normal use case. Keep in mind, this test pegs all four cores at 4 GHz, 100% load. Compared to stock hitting 100 after 3 minutes, the cooler does a much better job but still won't perform miracles. Expect ~70-75 degrees with heavy load from a normal application or game and good case ventilation. The fan is rated at 2500 RPM but mine is showing up to 3000 on SpeedFan.I switched from the stock cooler to the NH-L9i and then to this, and I am generally seeing around 10 degrees cooler temps with this versus those two, and I had the thicker 25 mm fan for the NH-L9i as well. I have no concerns with the temperatures I am seeing, though I would not consider upping my overclock beyond 4.2 GHz, and probably will just let it sit at 4 GHz.Installation (5/5):You will need access to the back of the motherboard for initial installation, but after that you can remove the heatsink and reseat it just from the front. The mount is solidly built and does a great job of simplifying the process of securing the heatsink once you've applied your thermal paste. On other coolers, you have to try hard to center over the processor and tighten 4 points at once. This cooler only requires two connections to the mounting bracket, is easy to align, and is very solid once it is secured. The thermal paste is top notch. Remember to aim for lentil size in the middle! The included Low Noise Adapter and screwdriver round out the package.There are mounts for LGA 2011, LGA 115x, and AMD sockets included. It truly is a universal cooler for modern processors. The included fan locks to the cooler securely, and the fan cable is sturdy and was definitely long enough. This cooler is even lighter than the NH-L9i so it shouldn't flex the motherboard much if at all. Overall, this was a very quick and sturdy installation.Noise (4/5):Definitely noticeable at 100%, but not obtrusive. At 70% or so, the fan is basically silent in the case along with the case fans. At idle, you'll get about the same acoustic performance as the stock cooler. At load, the Noctua is quieter than stock, but a slight acoustic tone is introduced by the 14 mm fan. This is acceptable in my opinion, but people that require absolute silence may want to limit the fan curve or install the Low Noise Adapter at the cost of extra heat. I have not noticed any extra vibration or wind noises in the case. In conclusion, the noise goes from nonexistent to acceptable, which is a triumph for a part that is optimized for size and cooling at the same time as noise.Build Quality (5/5):My shipping box came with a corner dented in. Thanks UPS. Luckily, the Noctua packaging was well designed and the cooler was in good condition, no bent fins or anything. The fan is very well made. The heatsink felt a bit fragile but normal handling definitely won't bend fins or make you worry about breaking it. Just don't drop the heatsink and it will be just fine. The fins are much thinner than the NH-L9i or the Intel stock cooler. I'm guessing this helps performance somehow or reduces the necessary static pressure from the fan.The contact plate was covered with a plastic shield but I had some dust under the shield. A quick wipe with 99% iso was all that was needed to get it completely clear of dust. I would definitely not trust the shield to replace a pre-installation cleaning. Instructions were clear and to the point. There is enough thermal paste for probably 4 overeager applications and a fifth, lentil-sized drop. If you look up reviews of this thermal paste, it is one of the best out there and you get enough to mess up a few times and still have some left over. Overall, this cooler is a premium product through and through.Final Thoughts:If you are considering this for anything but a space-restricted setup, you should look elsewhere. Noctua's other coolers and even the cheap Cooler Master 212 will generally perform better. This product is specifically for small cases with limited cooler clearance and people that prioritize noise and performance over price. For what it is, it's a godsend. Now you can use your hot Haswell chips in a Mini-ITX case with even a mild overclock! I have tried other coolers, including the Intel stock cooler and the Noctua NH-L9i with a fan upgrade, and this one is hands down the best performing. That said, the stock cooler will work for most people, so the value proposition of this cooler only makes sense if you need cooler temps or lower noise at minimal height and don't mind the premium pricing. You get what you pay for with this product, and with the 6 year warranty and superb build quality along with promises to send you brackets for new sockets, this cooler may just last you through two builds.I'm giving this 5 stars even though my average is 4.5 because for those who specifically need to cool their performance CPUs in a small case, this is the perfect product. For others with more clearance, I would probably give this a 4 star and urge you to save money or get better performance with the bigger Noctua coolers or the CM Hyper-212.

Noctua NH-L9x65 Low-Profile CPU Cooler is installed in a 2U case. Every part is perfect, no sharp edges, clean assembly with intelligent design. We install Noctua coolers and fans in every build. Not one component has failed in 7 years of use. Every cooler exceeds its rating, CPUs run 10 deg C less than other computers.

This cooler mounts easily and solidly to the motherboard. The fan is so quiet, I can barely hear it with the chassis panels off. With them on, it's completely silent.

Changed from my Intel OEM cooler to this and the CPU temps went from 93-97C to 56-59C. I cannot recommend this enough!!

This cooler does what it says. It's inexpensive with Austrian quality and reliability. When running at full speed the cooler makes a slightly high pitch noise that I don't enjoy, but the fan rarely needs to spin at maximum. Be sure to mount the cooler per instructions. With the Intel LGA you need to align the support bars exactly or you won't get a good contact with the CPU. The fan speed is not usually super high and doesn't need to be as the heatsink does a good job at heat dissipation under normal loads. I only notice high fan speed when running benchmarks like Cinebench R24 or Geekbench.Some comments on performance and how I configured the rest of my system.1) The PC is a home-build using Intel Core i7-14700 CPU. ARC A750 GPU on an ASUS ROG Strix B760-I ITX Motherboard.2) I recently upgraded the PSU from a very poor performing Silverston SFX-L 550W model to probably the gold standard (literally 80+ Gold certifed) Corsair SF750 750W PSU. (this is an awesome PSU by the way)3) The PC is built into a Iqunix ZX-1 mini case. All black case.4) I ran this PC with no other case fans for a while... don't do this. It will work, but the Noctua cooler will have to work a lot harder, your CPU will run hotter and the noise will bug you over time.5) After some months of running without case fans I added a couple of Antec 120mm fans to the top of the case drawing air up and out. This made a huge difference in temps.Some thoughts on noise and performance:1) In general use I never hear any of the fans any more.2) When the NH-L9x65 is running at 50% or less, I can't hear it at all over ambient noise.3) At around 70% I can head the NH-L9x65 but it is not obtrusive (when I run most games, the fan is usually less than 70%)4) At full speed, the fan is quite loud and buzzy. If fan noise bothers you and you intend to run your CPU hard, consider a large cooler with a 120mm fan. I rarely have the fan running at 100% unless I am running a long running benchmark like Cinebench.5) Shorter running benchmarks like Geekbench 6 never get the CPU cooler fan over 80%.6) Temperatures:When running office apps, Visual Studio, Anaconda or other developmetn tools the CPU temps rarely get above 60C. Usually between 50 and 60C.When running games like FIFA24 or Forza Horizon CPU temps are in the mid 60s or soIf I run a long running benchmark like Cinebench24 multithreading test I will easily hit 100C and thermal throttle. I don't expect a fan to keep up with 20 cores on the 14th gen i7. If I wanted to run at 100% for a long time, I would have gotten a water cooler.I am a little pissed at myself for not noticing that Noctua also sells an All-black version of this cooler. I would have gotten that since my PC is pretty much pure black in every way... except for the Noctua colored fan and chrome heat sink. The all-black version of the same cooler is $10 more unfortunately (I guess black paint is more expensive?)The printed instructions are excellent. Perfect English from the Austrians. 😂