Noctua NH-L9i-17xx vs Thermalright Assassin Spirit 120 EVO Dark CPU Cooler Air with 4×6mm HeatPipes

Overview of CPU Coolers

The Noctua NH-L9i-17xx and the Thermalright Assassin Spirit 120 EVO Dark are two notable CPU coolers catering to different user needs. Priced at C$59.95, the Noctua NH-L9i-17xx is designed for compact builds, whereas the Thermalright Assassin Spirit 120 EVO Dark, priced at C$24.90, offers a budget-friendly cooling solution for various platforms. This article will delve into their features, performance, and suitability for different setups.

Design and Build Quality

The Noctua NH-L9i-17xx features a low-profile design with a height of only 37mm, making it an excellent choice for compact HTPC and Small Form Factor (SFF) cases. Its tailored footprint ensures full compatibility with RAM and PCIe slots across various motherboard formats. In contrast, the Thermalright Assassin Spirit 120 EVO Dark measures 120 x 73 x 156 mm and sports an all-aluminium construction, enhancing its heat dissipation capabilities. While both coolers are well-built, the Noctua shines in compactness, while the Thermalright offers a more traditional tower design for larger cases.

Cooling Performance

In terms of cooling performance, the Noctua NH-L9i-17xx is equipped with the renowned NF-A9x14 slim 92mm fan that operates quietly, thanks to its Low-Noise Adaptor and PWM control. This design allows it to provide full cooling performance under load while remaining whisper-quiet at idle. The Thermalright Assassin Spirit 120 EVO Dark, on the other hand, employs a high-speed PWM fan that can reach up to 1850 RPM, promising strong heat dissipation. While both coolers excel in their cooling capabilities, the Noctua is particularly suited for moderate heat loads, making it ideal for Intel’s Core and Core Ultra processors.

Compatibility

Compatibility is a crucial factor when choosing a CPU cooler. The Noctua NH-L9i-17xx is specifically designed for Intel’s LGA1851 and LGA1700 platforms, ensuring seamless installation on various motherboards. It comes with high-end NT-H1 thermal paste and a SecuFirm2 mounting system, making installation straightforward. The Thermalright Assassin Spirit 120 EVO Dark boasts broader compatibility, supporting Intel LGA1150/1151/1155/1156/1200/1700/17XX, as well as AMD’s AM4 and AM5 platforms. This versatility makes it a suitable option for users who may switch between different CPU sockets.

Noise Levels

When considering noise levels, the Noctua NH-L9i-17xx stands out for its whisper-quiet operation. Thanks to its advanced fan technology, it can maintain low noise levels even under load. This is a significant advantage for users building a silent PC or working in noise-sensitive environments. The Thermalright Assassin Spirit 120 EVO Dark, while equipped with a PWM fan, may not achieve the same level of quiet operation, especially at higher RPMs. Users prioritizing a quiet system may lean towards the Noctua for its superior noise management.

Installation Process

The installation process can significantly affect user experience. The Noctua NH-L9i-17xx simplifies this with its SecuFirm2 mounting system, designed for hassle-free installation on Intel LGA1700 and LGA1851 CPUs. It also includes high-quality thermal paste, further easing the setup. In contrast, the Thermalright Assassin Spirit 120 EVO Dark requires users to utilize the original backplate that comes with their motherboard for AMD installations. Though it provides detailed instructions, the slightly more complex installation might be a consideration for less experienced builders.

Brand Reputation

Brand reputation plays a vital role in consumer choices. Noctua has established itself as a premium brand in the cooling market, amassing over 200 awards and recommendations from international hardware websites. The Noctua NH-L9i-17xx is a testament to this reputation, backed by a 6-year manufacturer’s warranty. On the other hand, Thermalright, with over 20 years of experience, is well-regarded, particularly within the Chinese market. While both brands offer reliability, Noctua's extensive accolades and warranty provide an added layer of trust for consumers seeking long-term performance.

Price Comparison

The price difference between the two coolers is quite significant. The Noctua NH-L9i-17xx is priced at C$59.95, reflecting its premium features and build quality. In contrast, the Thermalright Assassin Spirit 120 EVO Dark is much more affordable at C$24.90. This lower price point makes it an attractive option for budget-conscious consumers or those looking for a cost-effective cooling solution. However, potential buyers should weigh the price against the cooling performance and features offered by each cooler to determine the best value for their specific needs.

Which should you buy?

In conclusion, the choice between the Noctua NH-L9i-17xx and the Thermalright Assassin Spirit 120 EVO Dark largely depends on your specific requirements and budget. If you are building a compact system and prioritise low noise levels, the Noctua is the superior choice with its award-winning design and quality. However, if you are looking for a budget-friendly option that offers good compatibility across multiple platforms, the Thermalright Assassin Spirit 120 EVO Dark is an excellent alternative. Ultimately, both coolers provide effective cooling solutions, but your choice should reflect your unique setup and cooling needs.