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Thermalright Peerless Assassin 120 SE CPU Air Cooler vs ARCTIC P12 Pro PST - 5 Pack - Powerful Premium Fan

Updated August 2026The Thermalright Peerless Assassin 120 SE excels in CPU cooling performance, while the ARCTIC P12 Pro offers versatile fan capabilities. Choose based on your specific cooling needs.

The Thermalright Peerless Assassin 120 SE excels in CPU cooling performance, while the ARCTIC P12 Pro offers versatile fan capabilities. Choose based on your specific cooling needs.

Why Thermalright Peerless Assassin 120 SE CPU Air Cooler is better

cooling performance

better airflow and heat dissipation for CPUs

design

dual-tower structure enhances cooling efficiency

compatibility

supports a wider range of CPU sockets

Why ARCTIC P12 Pro PST - 5 Pack - Powerful Premium Fan is better

versatility

can be used in various cooling scenarios

noise level

designed for quieter operation

RPM

higher maximum RPM for airflow generation

Overall score

Thermalright Peerless Assassin 120 SE CPU Air Cooler
85
ARCTIC P12 Pro PST - 5 Pack - Powerful Premium Fan
75

Specifications

SpecThermalright Peerless Assassin 120 SE CPU Air CoolerARCTIC P12 Pro PST - 5 Pack - Powerful Premium Fan
Airflow66.17 CFMN/A
Noise Level25.6 dB(A)N/A
Socket SupportIntel & AMDN/A
Bearing TypeN/AFluid Dynamic
Fan ControlPWMPWM

Dimension comparison

Thermalright Peerless Assassin 120 SE CPU Air CoolerARCTIC P12 Pro PST - 5 Pack - Powerful Premium Fan

Overview of the Products

The Thermalright Peerless Assassin 120 SE CPU Air Cooler is priced at £26.90, while the ARCTIC P12 Pro PST - 5 Pack comes in at £38.98. Both products cater to users seeking efficient cooling solutions, but they cater to different needs and preferences within the cooling market.

The Peerless Assassin boasts a dual-tower design with advanced features aimed at maximising CPU cooling performance, making it suitable for intensive computing tasks. In contrast, the ARCTIC P12 Pro focuses on providing powerful airflow suitable for a variety of applications, from case cooling to radiators. Understanding these differences can help buyers choose the right product for their cooling needs.

Design and Build Quality

The Thermalright Peerless Assassin 120 SE features a robust design with dimensions of 125(L)x135(W)x155(H)mm, reflecting its dual-tower cooling structure. This design incorporates high-quality materials, including aluminium and pure copper. In contrast, the ARCTIC P12 Pro is designed as a premium fan with a focus on high static pressure and minimal vibrations, utilising fluid dynamic bearings for smooth operation.

While the Peerless Assassin is built specifically to cool CPUs effectively, the ARCTIC fan's design allows it to adapt to various cooling scenarios, including radiators and case cooling. The choice of materials in both products suggests a commitment to durability and performance, though the specific application will guide which is the better choice.

Cooling Performance

When it comes to cooling performance, the Thermalright Peerless Assassin is equipped with double PWM fans that can achieve an airflow of 66.17 CFM at a noise level of 25.6 dB(A). This cooling capability is bolstered by its innovative AGHP technique, utilising six heat pipes to enhance heat dissipation efficiency.

On the other hand, the ARCTIC P12 Pro can operate at speeds up to 3000 RPM, offering a significant advantage in terms of airflow generation. Its design allows it to maintain high efficiency even under resistance, making it ideal for setups that include dense radiators or restrictive case designs. The fan's ability to stop completely at less than 5% PWM is also a notable feature for maintaining low noise levels.

Compatibility

The Thermalright Peerless Assassin supports a wide range of CPU sockets, including Intel's LGA1150 to LGA1700 and AMD's AM4 and AM5. This extensive compatibility ensures that it can be used with most modern CPUs, making it a versatile choice for a variety of builds.

Conversely, the ARCTIC P12 Pro fans can be used in numerous configurations due to their standard 120mm size and PWM control, allowing them to fit in most cases and be used in different cooling setups. While both products offer good compatibility, the Peerless Assassin is specifically tailored for CPU cooling, while the ARCTIC fans provide broader application potential.

Noise Levels

The Thermalright Peerless Assassin operates at a maximum noise level of 25.6 dB(A), which is quite low and suitable for quiet computing environments. This is particularly important for gamers and professionals who require a noise-free workspace.

In comparison, the ARCTIC P12 Pro is designed for quiet operation, utilising self-lubricating bearings to minimise noise. While it can reach higher RPMs, its design aims to maintain a balance between performance and noise. Users can expect efficient cooling with minimal disruption, making it a solid choice for those prioritising a quiet computing experience.

Installation and Ease of Use

Thermalright has designed the Peerless Assassin with user-friendliness in mind, providing metal fasteners for both Intel and AMD platforms, which simplifies the installation process. This thoughtful design detail ensures that users can easily mount the cooler without requiring extensive technical knowledge.

The ARCTIC P12 Pro, being a fan rather than a cooler, is also straightforward to install in various setups. However, it may require additional consideration for users wanting to implement it in specific cooling scenarios, such as in radiators or as case fans. Both products aim to provide an easy installation experience, though the Peerless Assassin might require a bit more attention due to its size and installation requirements.

Target Audience

The Thermalright Peerless Assassin 120 SE is ideal for gamers and enthusiasts who require effective CPU cooling for high-performance processors. Its design and specifications cater to those engaged in demanding tasks like gaming, video editing, or 3D rendering.

Conversely, the ARCTIC P12 Pro targets a broader audience, including users looking for general case cooling or those who need additional fans for radiators. Its high static pressure and versatile applications make it suitable for various systems, from basic setups to advanced configurations. Each product serves distinct user needs, making it essential to consider the intended use case when choosing between them.

Which should you buy?

Deciding between the Thermalright Peerless Assassin 120 SE and the ARCTIC P12 Pro PST ultimately depends on your specific cooling requirements. If you are looking for a dedicated CPU cooler that excels in high-performance scenarios, the Peerless Assassin at £26.90 is an excellent choice with its dual-tower design and effective cooling features. However, if you need versatile fans that can adapt to various cooling needs, including case ventilation and radiator applications, the ARCTIC P12 Pro pack at £38.98 offers powerful performance and flexibility.

Both products have their merits, but aligning them with your cooling needs will guide you to the best decision.

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Thermalright Peerless Assassin 120 SE CPU Air Cooler vs ARCTIC P12 Pro PST - 5 Pack - Powerful Premium Fan | versusfinder