Noctua NH-L9i-17xx vs Thermalright Peerless Assassin 120 SE Black CPU Cooler

Price Comparison

The Noctua NH-L9i-17xx is priced at C$59.95, while the Thermalright Peerless Assassin 120 SE Black CPU Cooler is more budget-friendly at C$46.79. This makes the Thermalright cooler C$13.16 less expensive than its competitor. If cost is a significant factor in your decision-making process, the Thermalright offers a more economical solution without sacrificing too much on performance.

Cooling Performance

The Noctua NH-L9i-17xx is known for its award-winning design, featuring a slim 92mm fan that excels in noise reduction while providing sufficient cooling under load conditions. On the other hand, the Thermalright Peerless Assassin 120 SE Black boasts dual fans that can push air volumes of up to 66.17 CFM, offering a more robust cooling capability overall. The dual fan setup allows for enhanced airflow and improved thermal performance, which may be particularly beneficial for users with higher heat-generating CPUs.

Size and Compatibility

The Noctua NH-L9i-17xx stands at a compact height of only 37mm, making it an excellent choice for users with Small Form Factor (SFF) cases. This design ensures compatibility with a variety of motherboards without obstructing RAM or PCIe slots. In contrast, the Thermalright Peerless Assassin 120 SE Black has a height of 155mm, which provides a larger cooling area but may limit its compatibility with smaller cases. Users with standard ATX or Micro-ATX setups will likely find both options suitable, but those with compact builds should lean towards the Noctua.

Installation Process

Both coolers include user-friendly mounting systems, but the Noctua NH-L9i-17xx comes equipped with the SecuFirm2 mounting system, which specifically targets ease of installation for Intel LGA1700 and LGA1851 CPUs. It also includes high-end NT-H1 thermal paste to enhance thermal conductivity. The Thermalright Peerless Assassin 120 SE Black supports a wider range of socket types, including both Intel and AMD platforms, but its installation might be a bit more complex due to the additional components required for dual fans.

Noise Levels

The Noctua NH-L9i-17xx is designed for whisper-quiet operation, particularly at idle, thanks to its Low-Noise Adaptor and PWM capabilities. While specific noise levels for the Thermalright Peerless Assassin 120 SE Black are not disclosed, it operates at a maximum noise level of 25.6 dB(A). Given Noctua's reputation for quiet performance, it is likely to be quieter under low-load conditions compared to the Thermalright, which might generate slightly more noise during operation due to its dual fans.

Build Quality and Durability

Noctua is well-regarded for its high-quality construction and durability, backed by a 6-year manufacturer’s warranty. The NH-L9i-17xx has received over 200 awards and recommendations, further solidifying its reputation in the market. The Thermalright Peerless Assassin 120 SE Black also features a robust build, including an all-aluminium fin structure and metal fasteners for installation, but it lacks the extensive track record of accolades that Noctua boasts. For those focused on longevity and reliability, Noctua may have the upper hand.

Design Aesthetics

The Noctua NH-L9i-17xx features a sleek and professional design that is characteristic of Noctua products, appealing to users who prefer a minimalist look. In contrast, the Thermalright Peerless Assassin 120 SE Black showcases a bold, black aesthetic that may attract gamers and users looking for a more aggressive appearance in their builds. Both coolers have their unique appeal, so the choice may come down to personal preference regarding design.

Which should you buy?

Ultimately, the choice between the Noctua NH-L9i-17xx and the Thermalright Peerless Assassin 120 SE Black depends largely on your specific needs and preferences. If you require a compact cooler for a small build and value quiet operation, the Noctua NH-L9i-17xx stands out as the better option, albeit at a higher price of C$59.95. Alternatively, if you are looking for superior cooling performance at a lower price of C$46.79 and have enough space in your case, the Thermalright Peerless Assassin 120 SE Black offers excellent value. Each cooler has its strengths, making them both worthy contenders in the CPU cooling market.