Thermalright Peerless Assassin 120 SE CPU Air Cooler vs Noctua NF-A4x20 PWM

Overview of the Products

When it comes to CPU cooling solutions, the Thermalright Peerless Assassin 120 SE and the Noctua NF-A4x20 PWM stand out in their respective categories. The Thermalright model is priced at £26.90, while the Noctua fan is more affordable at £18.40. Both products are designed to optimise cooling performance but cater to different needs and use cases.

Design and Build Quality

The Thermalright Peerless Assassin 120 SE features a robust double tower design, measuring 125(L)x135(W)x155(H)mm, which enhances its cooling capability. Constructed primarily from aluminium and equipped with metal fasteners for both Intel and AMD platforms, it promises durability and effective heat dissipation. In contrast, the Noctua NF-A4x20 PWM is more compact, with dimensions of 40x40x20 mm, making it ideal for smaller setups such as 1U servers. While Thermalright focuses on a larger cooling system, Noctua prioritises a quieter, space-saving solution.

Cooling Performance

The Thermalright Peerless Assassin 120 SE boasts impressive cooling capabilities, thanks to its six copper heat pipes and dual PWM fans that can reach a maximum airflow of 66.17 CFM at a noise level of 25.6 dB(A). This makes it suitable for high-performance CPUs that generate significant heat. The Noctua NF-A4x20 PWM, while smaller, still delivers commendable cooling with a maximum speed of 5000 RPM and a noise level of just 14.9 dB(A). For those prioritising a quiet environment, the Noctua fan excels, even if it may not cool as aggressively as the Thermalright cooler.

Noise Levels

In terms of noise performance, the Thermalright Peerless Assassin 120 SE operates at a maximum level of 25.6 dB(A), which is relatively quiet for a CPU cooler of its size. However, the Noctua NF-A4x20 PWM is designed for ultra-quiet operation, with a maximum noise level of only 14.9 dB(A). This lower noise output makes the Noctua fan particularly appealing for users who prioritise a quiet computing experience, especially in environments where noise can be disruptive.

Compatibility

The Thermalright Peerless Assassin 120 SE is compatible with a wide range of CPU sockets, including Intel’s LGA1150 to LGA1700 and AMD’s AM4 and AM5. This versatility makes it a suitable choice for various builds. On the other hand, the Noctua NF-A4x20 PWM, while less versatile in terms of CPU compatibility, is specifically tailored for applications requiring smaller fan sizes, such as network equipment and NAS devices. Its 4-pin PWM functionality ensures it can be easily integrated into various systems as well.

Installation and Accessories

Thermalright has designed the Peerless Assassin 120 SE with ease of installation in mind, providing necessary mounting plates and fasteners for both Intel and AMD systems. Weighing in at 0.97 kg, it is not the lightest option, but its design facilitates relatively straightforward installation. The Noctua NF-A4x20 PWM comes with various accessories, including anti-vibration mounts and a Y-cable for connecting to multiple fan headers, making installation versatile, especially in tight spaces. The additional accessories enhance the overall value of the Noctua fan, particularly for users who need to customise their setups.

Target Audience

The Thermalright Peerless Assassin 120 SE is aimed at gamers and enthusiasts who require robust cooling for high-performance CPUs. Its larger design and superior cooling capabilities make it ideal for demanding applications. Conversely, the Noctua NF-A4x20 PWM targets users with specific needs, such as those operating in compact environments or requiring silent operation for home or office setups. The £8.50 price difference also positions the Noctua fan as an economical choice for those who may not need the extensive cooling power of the Thermalright cooler.

Which should you buy?

Choosing between the Thermalright Peerless Assassin 120 SE and the Noctua NF-A4x20 PWM ultimately depends on your specific needs. If you are looking for a powerful cooling solution for a high-end CPU and don't mind a slightly higher noise level, the Thermalright model is the way to go. However, if you require a quieter, compact fan for smaller setups or network devices, the Noctua fan offers excellent performance at a lower price point. Make your decision based on your cooling needs, space restrictions, and budget.