Noctua NH-L9x65 chromax.Black vs Thermalright Assassin X 120 SE CPU Air Cooler

Price Comparison

The price difference between the Noctua NH-L9x65 chromax.Black and the Thermalright Assassin X 120 SE CPU Air Cooler is significant. The Noctua cooler is priced at C$101.95, while the Thermalright model is much more affordable at C$25.59. This makes the Thermalright cooler an attractive option for budget-conscious consumers looking to enhance their CPU cooling without breaking the bank. The Noctua cooler, while more expensive, is often regarded for its premium quality and performance, which may justify the higher price for some users.

Design and Build Quality

In terms of design, the Noctua NH-L9x65 chromax.Black boasts a compact low-profile design with a total height of only 65mm. This makes it an ideal choice for HTPCs, ITX, and small form factor builds, maintaining a 95x95mm footprint that ensures it does not obstruct RAM or PCIe slots. On the other hand, the Thermalright Assassin X 120 SE features a larger design with dimensions of 125mm in length, 71mm in width, and 148mm in height. This larger size could provide superior cooling performance but may require more space in the case. Both coolers are constructed with high-quality materials, but the Noctua's all-black design may appeal more to users looking for a sleek aesthetic.

Cooling Performance

Cooling performance is a critical factor for any CPU cooler, and both models have distinct advantages. The Noctua cooler is equipped with a highly optimised NF-A9x14 slim 92mm fan that supports PWM and features low-noise operation through a Low-Noise Adaptor. This fan is designed for CPUs with low to moderate heat dissipation, making it suitable for processors like the AMD Ryzen 7950X3D and Intel 285K. Conversely, the Thermalright Assassin X 120 SE is designed with a 120mm PWM fan that operates at a speed of 1550 RPM, delivering an airflow of up to 66.17 CFM while maintaining a noise level of ≤25.6 dB(A). This suggests that the Thermalright model may handle higher thermal loads more effectively, supporting CPUs with a TDP of 125 to 225W.

Compatibility

Compatibility is another crucial aspect when selecting a CPU cooler. The Noctua NH-L9x65 chromax.Black offers a SecuFirm2 mounting system compatible with Intel LGA1851, LGA1700, LGA1200, LGA115x, and AMD AM5 & AM4 sockets. It also provides an offset mounting option for optimal efficiency. In comparison, the Thermalright Assassin X 120 SE supports a wider range of sockets, including Intel 115X, 1200, 1700, and AMD AM4, and includes corresponding mounting plates for various CPU socket platforms. This broader compatibility may make the Thermalright cooler a more versatile choice for users with different CPU setups.

Noise Levels

Noise levels are an important consideration for many PC builders, especially for those aiming for a quiet computing experience. The Noctua cooler is designed for ultra-quiet operation, thanks to its optimised fan and low-noise adaptor. While specific decibel ratings are not provided, Noctua is renowned for its efficiency in minimising noise. On the other hand, the Thermalright Assassin X 120 SE has a noise level that can reach up to 25.6 dB(A). Although this is relatively low, users who prioritise silence might still prefer the Noctua cooler, especially in compact builds where noise can be more noticeable.

Installation

Installation ease can greatly influence user experience, and both coolers offer straightforward mounting solutions. The Noctua NH-L9x65 chromax.Black includes a SecuFirm2 mounting system that facilitates easy installation on various Intel and AMD sockets. Additionally, it comes with high-end NT-H1 thermal paste, which is known for its excellent thermal conductivity. In contrast, the Thermalright Assassin X 120 SE is equipped with metal fasteners for both Intel and AMD platforms, ensuring a secure fit. While both coolers aim for user-friendly installation, Noctua's reputation for thoughtful design might give it a slight edge in this category.

User Reviews and Brand Reputation

User reviews often play a significant role in the decision-making process for buyers. Noctua is widely recognised in the industry for its premium cooling solutions and has received numerous awards for its products. Users frequently commend the Noctua NH-L9x65 chromax.Black for its performance and low noise levels. On the flip side, Thermalright has been a trusted name in the market for over 20 years, known for delivering effective cooling solutions at competitive prices. The Thermalright Assassin X 120 SE has garnered positive reviews for its value-for-money proposition, making it a popular choice among budget-conscious builders.

Which should you buy?

Ultimately, the choice between the Noctua NH-L9x65 chromax.Black and the Thermalright Assassin X 120 SE comes down to your specific needs and budget. If you are looking for a compact, high-performance cooler with low noise levels and are willing to invest more, the Noctua cooler is an excellent option. However, if you are on a tighter budget and require good cooling performance for a variety of CPUs, the Thermalright Assassin X 120 SE offers significant value at a much lower price point. Consider your build requirements, thermal demands, and budget constraints to make the best choice for your system.