Noctua NH-L9x65 chromax.Black vs Thermalright Assassin Spirit 120 EVO Dark CPU Cooler Air with 4×6mm HeatPipes

Overview of CPU Coolers

The Noctua NH-L9x65 chromax.Black and the Thermalright Assassin Spirit 120 EVO Dark are two distinct CPU cooling solutions catering to different user needs and preferences. The Noctua model is a compact, low-profile cooler priced at C$101.95, while the Thermalright cooler offers a more traditional design at a significantly lower price of C$24.90. Each cooler has its own unique features that make it suitable for specific builds and cooling requirements.

Design and Build Quality

The Noctua NH-L9x65 chromax.Black has an award-winning compact design with a total height of only 65mm, making it ideal for small form factor builds, such as HTPCs and ITX systems. Its black aesthetic adds a modern touch to any build. In contrast, the Thermalright Assassin Spirit 120 EVO Dark features a larger form factor measuring 120mm in length and 156mm in height. This design incorporates aluminium fins and four heat pipes, promoting effective heat dissipation. While the Noctua is built for tight spaces, the Thermalright is designed for maximum cooling efficiency.

Cooling Performance

The Noctua NH-L9x65 comes equipped with a highly optimised NF-A9x14 slim 92mm fan, which features PWM support for automatic speed control. This fan is engineered for ultra-quiet operation, making it an excellent choice for users who prioritise noise levels. On the other hand, the Thermalright Assassin Spirit 120 EVO Dark utilises a more powerful fan with a rotation speed of 1850 RPM. This higher speed, combined with its four heat pipes and larger surface area, allows it to excel in heat dissipation, particularly for CPUs with higher thermal outputs.

Installation and Compatibility

Installation is straightforward for both coolers, but they target different user demographics. The Noctua NH-L9x65 chromax.Black includes the SecuFirm2 mounting system, compatible with various Intel and AMD sockets, including LGA1851, LGA1700, and AM4. This cooler is particularly recommended for CPUs with low to moderate heat dissipation. Conversely, the Thermalright Assassin Spirit 120 EVO Dark offers compatibility with multiple Intel and AMD platforms, including LGA1150/1151/1155/1156/1200/1700 and AM4/AM5. Users will find that the Thermalright provides a broader compatibility range with its universal backplanes.

Price-to-Performance Ratio

The Noctua NH-L9x65 is priced at C$101.95, reflecting its premium quality and design tailored for compact systems. While it may seem expensive, it is justified by its performance and low noise levels. In stark contrast, the Thermalright Assassin Spirit 120 EVO Dark is significantly more affordable at just C$24.90. This price point makes it an attractive option for budget builders seeking decent cooling performance without breaking the bank. However, users should consider that the lower price comes with a trade-off in terms of the compactness and acoustic performance.

Target Audience

The Noctua NH-L9x65 chromax.Black is specifically designed for users building compact systems where space is at a premium. Its low profile and quiet operation make it ideal for HTPCs and other small builds. Conversely, the Thermalright Assassin Spirit 120 EVO Dark is better suited for users who require efficient cooling for larger systems or those with CPUs that generate more heat. Its design targets gamers and power users who may not be as concerned about noise levels and are looking for a cost-effective cooling solution.

Noise Levels

Noise levels are a critical factor in choosing a CPU cooler. The Noctua NH-L9x65 is renowned for its ultra-quiet operation, thanks to its slim fan design and advanced PWM control. This cooler is a perfect fit for noise-sensitive environments, ensuring that users can enjoy an unobtrusive computing experience. In contrast, the Thermalright Assassin Spirit 120 EVO Dark, while capable of effective cooling, may produce higher noise levels due to its powerful fan and higher RPM. Users prioritising silence should lean towards the Noctua.

Which should you buy?

Choosing between the Noctua NH-L9x65 chromax.Black and the Thermalright Assassin Spirit 120 EVO Dark ultimately depends on your specific needs. If you require a compact, quiet cooler for a small form factor build, the Noctua is worth the investment at C$101.95. However, if you're looking for a budget-friendly option that provides solid cooling performance for larger systems, the Thermalright at C$24.90 could be the better choice. Consider your system requirements, budget, and noise tolerance to make the best decision for your build.