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Thermalright Peerless Assassin 120 SE CPU Air Cooler vs ARCTIC P14 Slim PWM PST - PC Fan

Updated August 2026The Thermalright Peerless Assassin 120 SE offers superior cooling performance and compatibility, making it the better choice for high-performance builds, while the ARCTIC P14 Slim is a budget-friendly option for compact cases.

The Thermalright Peerless Assassin 120 SE offers superior cooling performance and compatibility, making it the better choice for high-performance builds, while the ARCTIC P14 Slim is a budget-friendly option for compact cases.

Why Thermalright Peerless Assassin 120 SE CPU Air Cooler is better

Cooling Performance

Peerless Assassin has higher airflow and fan speed.

Compatibility

Supports a wider range of CPU sockets.

Build Quality

Robust design with double tower cooling.

Why ARCTIC P14 Slim PWM PST - PC Fan is better

Price

P14 Slim is significantly cheaper.

Low Profile

Ideal for compact builds.

Noise Level

Operates at lower noise output.

Overall score

Thermalright Peerless Assassin 120 SE CPU Air Cooler
85
ARCTIC P14 Slim PWM PST - PC Fan
65

Specifications

SpecThermalright Peerless Assassin 120 SE CPU Air CoolerARCTIC P14 Slim PWM PST - PC Fan
Max RPM15501800
Airflow (CFM)66.1747
Noise Level (dB)25.60.3
Static PressureN/A1.31 mmH₂O
Socket CompatibilityMultipleN/A

Dimension comparison

Thermalright Peerless Assassin 120 SE CPU Air CoolerARCTIC P14 Slim PWM PST - PC Fan

Brand Overview

Thermalright and ARCTIC are two well-established brands in the cooling solutions market, each with their unique offerings. Thermalright has over 20 years of experience in developing computer accessories, particularly focusing on CPU air coolers, making it a respected name in the player market. In contrast, ARCTIC is known for its innovative cooling technology, particularly in fans, and has garnered a strong reputation for delivering efficient performance at competitive prices.

Cooling Performance

When it comes to cooling performance, the Thermalright Peerless Assassin 120 SE CPU Air Cooler stands out with its impressive specifications. It features double PWM fans capable of achieving a fan speed of up to 1550 RPM and an airflow of 66.17 CFM, ensuring robust cooling for high-performance CPUs. On the other hand, the ARCTIC P14 Slim PWM PST PC Fan, while smaller, can reach a fan speed of 1800 RPM with an airflow of 47 CFM. Although the P14 Slim is designed for static pressure and is optimized for use on heatsinks and radiators, the Peerless Assassin offers a more powerful cooling solution, making it better suited for demanding applications.

Design and Build Quality

The design and build quality of a cooling product can significantly affect its performance and longevity. The Thermalright Peerless Assassin 120 SE features a double tower cooling design, which allows for more efficient heat dissipation. It is equipped with six 6mm pure copper heat pipes and a full electroplating reflow welding process, contributing to its durability and performance. The ARCTIC P14 Slim, with its low profile design of only 16mm, is tailored for compact cases but may not match the robust construction of the Peerless Assassin. Thus, while both products are well-built, the Peerless Assassin's design offers an advantage in terms of thermal management.

Compatibility

Compatibility is crucial for any cooling solution, especially for PC builders. The Thermalright Peerless Assassin 120 SE supports a wide range of sockets, including Intel's LGA1150 to LGA1700 and AMD's AM4 and AM5. This broad compatibility makes it a versatile choice for various builds. In contrast, the ARCTIC P14 Slim PWM PST is primarily a fan and does not have socket compatibility concerns, but its application is more focused on enhancing airflow in specific configurations rather than serving as a standalone CPU cooler. Therefore, if you're looking for a component that fits a variety of systems, the Peerless Assassin is the clear winner.

Noise Levels

Noise level is an important consideration for users seeking a quiet computing experience. The Thermalright Peerless Assassin operates at a maximum noise level of 25.6 dB(A), which is relatively quiet for a CPU cooler of its performance level. In comparison, the ARCTIC P14 Slim operates at a noise level of 0.3 Sone, translating to a low noise output, especially given its higher RPM capabilities. While both products aim for quiet performance, the Peerless Assassin's noise level is slightly higher, which may be a consideration for users prioritising silence in their builds.

Price Point

Price is a significant factor when choosing between cooling products. The Thermalright Peerless Assassin 120 SE is priced at £26.90, reflecting its premium design and performance capabilities. Conversely, the ARCTIC P14 Slim PWM PST is priced at a budget-friendly £6.32, making it an attractive option for users looking for cost-effective cooling solutions. While the Peerless Assassin offers more advanced features and superior cooling performance, the P14 Slim provides excellent value for users needing a reliable fan without breaking the bank.

Target Audience

The target audience for each product varies based on their distinct features and capabilities. The Thermalright Peerless Assassin 120 SE is aimed at gamers and PC enthusiasts who require high-performance cooling for demanding CPUs, making it ideal for overclocking and intensive tasks. Conversely, the ARCTIC P14 Slim is designed for users with smaller form-factor builds or those who seek to enhance airflow without the need for a large, high-performance cooler. Thus, each product caters to different segments of the market.

Which should you buy?

Choosing between the Thermalright Peerless Assassin 120 SE CPU Air Cooler and the ARCTIC P14 Slim PWM PST PC Fan ultimately depends on your specific needs. If you require superior cooling performance, compatibility with multiple CPU sockets, and robust build quality, the Peerless Assassin is the clear choice, albeit at a higher price. However, if you are looking for an economical, low-profile fan that excels in static pressure and is suitable for compact cases, the ARCTIC P14 Slim is an excellent option. Assess your cooling requirements and budget to make the best decision for your PC build.

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Thermalright Peerless Assassin 120 SE CPU Air Cooler vs ARCTIC P14 Slim PWM PST - PC Fan | versusfinder