Noctua NH-U9S: Powerful Cooling Performance and Excellent Compatibility


The Noctua NH-U9S is a premium CPU cooler that combines strong cooling performance with excellent compatibility. With its compact single-tower design and low profile, it is ideal for HTPCs, ITX, and Small Form Factor builds. Equipped with a highly optimized NF-A9 92mm fan, this cooler offers automatic speed control and ultra-quiet operation. It also includes high-end thermal paste and a mounting system for easy installation on both Intel and AMD processors. Backed by Noctua’s renowned quality and a 6-year warranty, this cooler is a popular choice for both Intel Core and AMD Ryzen processors.

As someone who has built systems for several years, I decided to venture outside of my comfort zone and try a non-stock CPU cooler. After reading numerous reviews, I chose the Noctua NH-U9S, and I have been extremely impressed with its performance. Previously, with the stock cooler on my old i5-4440 CPU, I experienced high temperatures of around 65C under low-stress loads. However, with the NH-U9S installed on my new i5-9600k, I now average around 38C under similar loads. Not only is it providing excellent cooling, but it is also incredibly quiet, making my system near silent. The build quality and compatibility of this cooler have exceeded my expectations, and I am confident it will last through several system upgrades.

Compact Design for Excellent Compatibility

The Noctua NH-U9S is designed with a compact single-tower design that offers both strong cooling performance and excellent compatibility with various PC builds. With a height of only 125mm, this CPU cooler is ideal for HTPCs, ITX builds, and Small Form Factor systems. What’s great is that it does not overhang the RAM or PCIe slots on most current motherboards, ensuring a hassle-free installation process. Whether you have limited space or specific component requirements, the NH-U9S has got you covered.

Efficient and Quiet Cooling Performance

The NH-U9S is equipped with a highly optimized NF-A9 92mm fan that supports PWM for automatic speed control. This ensures that the fan adjusts its speed according to the CPU temperature, providing efficient cooling when needed and operating quietly during low-load tasks. Additionally, the included Low-Noise Adaptor further reduces noise levels, allowing for near-silent operation. With the NH-U9S, you can enjoy excellent cooling performance without compromising on noise levels.

Easy Installation and Versatile Compatibility

Noctua understands the importance of easy and hassle-free installation. That’s why the NH-U9S comes with the high-end NT-H1 thermal paste and the SecuFirm2 mounting system. These features make installation a breeze, whether you have an Intel or AMD system. The mounting system supports Intel LGA1851, LGA1700, LGA1200, LGA115x, as well as AMD AM5 and AM4 sockets. Additionally, the offset mounting option ensures the best efficiency for different CPU configurations. No matter your setup, the NH-U9S provides versatile compatibility and straightforward installation.

Renowned Noctua Quality and Warranty

Noctua is known for their exceptional quality and reliability, and the NH-U9S is no exception. Backed by a 6-year manufacturer’s warranty, you can trust that this CPU cooler is built to last. Whether you have an Intel Core i9, i7, i5, i3, or an AMD Ryzen processor, the NH-U9S is a deluxe choice that offers optimal cooling performance and peace of mind. With Noctua, you can be confident in the quality and longevity of your CPU cooler.

Cool and Quiet Wins the Race

One satisfied customer shared their experience with the NH-U9S, stating that the cooler exceeded their expectations. They were impressed by the significant temperature reduction compared to their stock cooler, with low-stress temperatures averaging around 38C. Not only did the NH-U9S provide excellent cooling performance, but it also operated quietly, achieving near-silence even in a warm room. The customer also shared some helpful tips for first-time installers, emphasizing the importance of following the instructions and avoiding common mistakes. Overall, the NH-U9S delivered on its promise of cool and quiet performance.

Excellent Performance for Ryzen CPUs

Another customer praised the NH-U9S for its excellent performance on their Ryzen 5600X CPU. They found that the cooler allowed them to overclock their CPU and sustain high boost clocks for extended periods without overheating. The Noctua mounting system made installation a breeze, and the fan operated quietly and efficiently. This customer highly recommended the NH-U9S, especially for those using Ryzen CPUs.

Compact Cooler for HP Victus 15L Case

A customer with an HP Victus 15L case shared their positive experience with the NH-U9S. After experiencing high CPU temperatures with the stock cooler, they switched to the NH-U9S and saw a significant improvement. The cooler kept their CPU temperature below 80 degrees Celsius, providing a cooler and quieter experience. They also noted that the NH-U9S fit comfortably in their case with room to spare, making it an excellent choice for compact builds.

Great Value and Quiet Operation

A satisfied customer highlighted the value and quiet operation of the NH-U9S. They mentioned that while the brown color and lack of RGB lighting might not be for everyone, the cooler performed exceptionally well and kept their PC cool. As a retro gamer, they found the NH-U9S to be more than sufficient for their needs. The only drawback they mentioned was the slightly challenging installation process, which required removing the motherboard. However, the performance and quiet operation of the NH-U9S made up for any installation difficulties.


  • Compact single-tower design combines strong cooling performance with excellent case-, RAM-, and PCIe-compatibility.
  • Only 125mm height is ideal for HTPCs, ITX, and Small Form Factor builds; Does not overhang the RAM or PCIe slots on most current motherboards.
  • Highly optimized NF-A9 92mm fan with PWM support and Low-Noise Adaptor for automatic speed control and ultra-quiet operation.


  • Limited compatibility with larger CPUs or systems with more than 12 cores.
  • Brown color may not appeal to everyone, and lacks RGB lights.
  • Installation can be a bit difficult and time-consuming, requiring the removal of the motherboard.


    In conclusion, the Noctua NH-U9S is an outstanding CPU cooler that delivers strong cooling performance and exceptional compatibility. With its compact design, it fits well in various PC builds without obstructing other components. The highly optimized fan ensures efficient cooling while maintaining minimal noise levels. The included thermal paste and easy-to-use mounting system make installation hassle-free. As a customer, I am extremely satisfied with the performance and quality of this cooler. If you are in need of a reliable and efficient CPU cooling solution, I highly recommend considering the Noctua NH-U9S.

    Questions & Answers:

    Question: How does the Noctua NH-U9S perform in terms of cooling?

    Answer: The Noctua NH-U9S performs excellently in terms of cooling. Users have reported significant temperature improvements compared to stock coolers, with lower stress temperatures and sustained boost clocks.

    Question: Is the Noctua NH-U9S easy to install?

    Answer: While the Noctua NH-U9S may require the removal of the motherboard for installation, users have found the included instructions and mounting system to be straightforward and easy to use. However, it may still be a bit time-consuming for some.

    Question: How quiet is the Noctua NH-U9S?

    Answer: The Noctua NH-U9S is known for its quiet operation. The highly optimized NF-A9 92mm fan, combined with the Low-Noise Adaptor and PWM support, allows for automatic speed control and ultra-quiet performance. Users have reported that the cooler is virtually silent, contributing to a quieter overall system.

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