ARCTIC P12 vs Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
Updated August 2026 — The ARCTIC P12 is ideal for quiet, efficient fan use on heatsinks, while the Thermalright Peerless Assassin offers superior cooling performance and broader compatibility with added aesthetics.
The ARCTIC P12 is ideal for quiet, efficient fan use on heatsinks, while the Thermalright Peerless Assassin offers superior cooling performance and broader compatibility with added aesthetics.
Why ARCTIC P12 is better
Noise Level
ARCTIC P12 operates at 0.3 Sone vs Thermalright's 25.6 dB(A)
Price
ARCTIC P12 costs £21.58 vs Thermalright £28.79
Bearing Quality
ARCTIC P12 uses Fluid Dynamic Bearing with long service life
Why Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is better
Cooling Performance
Thermalright has dual fans, 66.17 CFM airflow, and 6 heat pipes
Compatibility
Thermalright supports Intel 115X/1200/1700/17XX and AMD AM4/AM5 sockets
Aesthetics
Thermalright features ARGB lighting vs ARCTIC P12 has none
Overall score
Specifications
| Spec | ARCTIC P12 | Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Price | £21.58 | £28.79 |
| Fan Speed | 1800 rpm | 1500 rpm |
| Airflow | 56.3 cfm | 66.17 cfm |
| Noise Level | 0.3 Sone | ≤25.6 dB(A) |
| Static Pressure | 2.2 mmH₂O | Not specified |
| Fans | 1 fan, 3-pin | 2 PWM fans, 4-pin |
| Compatibility | Not specified | Intel 115X/1200/1700/17XX, AMD AM4/AM5 |
| Lighting | None | ARGB |
Dimension comparison
Overview of ARCTIC P12 and Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
The ARCTIC P12 is a well-optimised fan designed for static pressure, while the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler stands out as a more comprehensive cooling solution. With a price of £21.58, the ARCTIC P12 focuses on efficient airflow and noise reduction, making it ideal for heatsinks and radiators. In contrast, the Thermalright cooler, priced at £28.79, offers dual PWM fans and advanced cooling technologies, targeting users who require more robust CPU cooling capabilities.
Cooling Performance
Cooling performance is a crucial factor when selecting a CPU cooler. The ARCTIC P12 has a static pressure of 2.2 mmH₂O and achieves a fan speed of 1800 rpm, delivering an airflow of 56.3 cubic feet per minute (cfm). This makes it particularly effective in scenarios with air resistance, such as on heatsinks. On the other hand, the Thermalright Peerless Assassin features a maximum airflow of 66.17 cfm at a fan speed of 1500 rpm. The combination of its dual fans and the AGHP technique, which includes six heat pipes, allows it to provide superior cooling performance, especially for high-performance CPUs under load.
Design and Build Quality
In terms of design, the ARCTIC P12 showcases an innovative blade design that not only optimises airflow but also minimises noise, operating at a quiet level of 0.3 Sone. Its long service life is enhanced by a Fluid Dynamic Bearing, which reduces friction and avoids lubricant leakage. Meanwhile, the Thermalright Peerless Assassin boasts a more complex design with a double tower cooling structure and ARGB lighting effects, appealing to gamers and PC builders who value aesthetics. The cooler is constructed from a combination of aluminium and copper, providing both durability and effective heat dissipation.
Noise Levels
When it comes to noise levels, the ARCTIC P12 operates at a noise level of just 0.3 Sone, making it an excellent choice for users who prioritise a quiet computing environment. This low noise output is largely due to its high-quality bearing design. Conversely, the Thermalright Peerless Assassin has a maximum noise level of 25.6 dB(A), which is still reasonable but significantly higher than that of the P12. Users sensitive to noise may prefer the ARCTIC P12 for its silent operation, particularly in home or office setups where a quieter environment is desired.
Compatibility
Compatibility is another important consideration for CPU coolers. The ARCTIC P12 is primarily a fan designed for use with heatsinks and radiators, making it versatile across various setups. However, it does not specify socket compatibility details. In contrast, the Thermalright Peerless Assassin supports a wide range of CPU sockets, including Intel's 115X/1200/1700/17XX and AMD's AM4 and AM5. This extensive compatibility ensures that it can be integrated into a variety of systems, making it a more flexible option for users planning to upgrade their CPUs in the future.
Installation Process
The installation process can significantly affect user experience. The ARCTIC P12 is a straightforward fan installation but lacks detailed information on mounting mechanisms. On the other hand, the Thermalright Peerless Assassin comes with specific mounting plates and fasteners tailored for both Intel and AMD platforms. This attention to detail facilitates a smoother installation process, allowing users to achieve optimal placement without unnecessary complications. The provided components ensure that even those with limited experience can install the cooler effectively.
Aesthetic Appeal
Aesthetic appeal is a key consideration for many PC builders. The ARCTIC P12 is functional but lacks any RGB lighting, which may be a drawback for those looking to enhance their PC's visual appeal. In contrast, the Thermalright Peerless Assassin features colourful ARGB lighting effects, adding a vibrant touch to any build. This aspect is particularly attractive to gamers and enthusiasts who wish to showcase their systems. The aesthetic differences between these two products could sway buyers depending on their styling preferences.
Which should you buy?
In conclusion, the choice between the ARCTIC P12 and the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler largely depends on your specific needs. If you require a high-quality, quiet fan primarily for heatsink or radiator use, the ARCTIC P12 at £21.58 is an excellent choice with its efficient design and low noise levels. However, if you are looking for a more comprehensive CPU cooling solution with dual fans, higher airflow, and broader compatibility for £28.79, the Thermalright Peerless Assassin is the better option. Ultimately, your choice should be guided by your cooling requirements and aesthetic preferences.
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