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ARCTIC Freezer 36 vs Thermalright Peerless Assassin 120 SE CPU Air Cooler

Updated August 2026The ARCTIC Freezer 36 offers excellent value and performance for high-end CPUs, while the Thermalright Peerless Assassin 120 SE provides superior cooling and versatility. Choose based on your specific needs.

The ARCTIC Freezer 36 offers excellent value and performance for high-end CPUs, while the Thermalright Peerless Assassin 120 SE provides superior cooling and versatility. Choose based on your specific needs.

Why ARCTIC Freezer 36 is better

price

ARCTIC Freezer 36 is cheaper at £22.99

installation

ARCTIC Freezer 36 has an innovative Click-installation system

size

ARCTIC Freezer 36 is more compact

Why Thermalright Peerless Assassin 120 SE CPU Air Cooler is better

cooling performance

Thermalright Peerless Assassin 120 SE supports higher TDP up to 265W

compatibility

Thermalright Peerless Assassin 120 SE supports more CPU sockets

noise level

Thermalright Peerless Assassin 120 SE has a specified noise level of 25.6 dB(A)

Overall score

ARCTIC Freezer 36
78
Thermalright Peerless Assassin 120 SE CPU Air Cooler
85

Specifications

SpecARCTIC Freezer 36Thermalright Peerless Assassin 120 SE CPU Air Cooler
Price£22.99£29.99
Cooling TypeAirAir
Fan SpeedN/A1550 RPM
AirflowN/A66.17 CFM
Noise LevelN/A25.6 dB(A)

Dimension comparison

ARCTIC Freezer 36Thermalright Peerless Assassin 120 SE CPU Air Cooler

Overview of the ARCTIC Freezer 36 and Thermalright Peerless Assassin 120 SE

The ARCTIC Freezer 36 is priced at £22.99, while the Thermalright Peerless Assassin 120 SE is available for £29.99. Both coolers are designed for high-performance CPU cooling, but they come with distinct features and specifications tailored to different preferences and requirements.

The ARCTIC Freezer 36 utilises a single-tower design with four offset heat pipes, optimising heat transfer and cooling efficiency. This model is particularly beneficial for high-end CPUs. On the other hand, the Thermalright Peerless Assassin 120 SE boasts a double tower design, which enhances cooling performance and supports a wider range of CPU socket types, making it a versatile option for various builds.

Design and Build Quality

In terms of design, the ARCTIC Freezer 36 features an innovative Click-installation system that simplifies the installation process and allows for easy fan replacement. This cooler is compatible with most 120 mm fans, providing flexibility for users who may wish to customise their setup further.

Conversely, the Thermalright Peerless Assassin 120 SE is constructed with an emphasis on robust materials, including a copper base and aluminium heatsink. Its dimensions of 125(L)x135(W)x155(H)mm make it a compact yet powerful cooling solution. The double tower configuration allows for enhanced airflow and cooling capabilities, making it a suitable choice for those seeking maximum performance in smaller spaces.

Cooling Performance

Cooling performance is a critical aspect of any CPU cooler. The ARCTIC Freezer 36 employs four offset heat pipes for efficient heat distribution, working in tandem with pressure-optimised 120 mm fans to dissipate heat effectively. This configuration is designed for high-end CPUs, ensuring that temperature management remains optimal during intensive tasks.

The Thermalright Peerless Assassin 120 SE claims a heat dissipation power consumption range of 120 to 265W, making it suitable for a variety of CPUs, including those that demand higher thermal management. The inclusion of two TL-C12C PWM fans, which operate at a speed of 1550rpm and produce a maximum airflow of 66.17CFM, further enhances its cooling efficiency. The overall cooling performance of both products positions them as strong contenders in the market.

Noise Levels

When evaluating CPU coolers, noise levels are often a concern for users. The ARCTIC Freezer 36 is designed to operate quietly, allowing for an unobtrusive computing experience. Specific noise level data is not provided, but its engineering aims to minimise disruptions, especially under load.

In contrast, the Thermalright Peerless Assassin 120 SE has a specified noise level of 25.6 dB(A), which is relatively quiet for a cooler of its size and performance capabilities. This feature makes it an attractive option for gamers and professionals alike who value silent operation alongside effective cooling.

Compatibility

Compatibility is a crucial factor when selecting a CPU cooler. The ARCTIC Freezer 36 requires the original AMD mounting screws if being installed on an AMD platform, which may pose a challenge for some users. However, it offers improved contact pressure distribution for Intel sockets LGA1851 and LGA1700, enhancing heat transfer efficiency.

The Thermalright Peerless Assassin 120 SE supports a wider range of CPU sockets, including Intel 115X/1200/1700 and AMD AM4. This versatility is bolstered by the inclusion of various mounting plates and fasteners, making it easier to install across multiple platforms. This broad compatibility may appeal to users who frequently upgrade or change their systems.

Installation Process

The installation process can significantly impact user experience. The ARCTIC Freezer 36 features an innovative Click-installation system that simplifies setup. This user-friendly approach is particularly advantageous for those who may not be as experienced with PC building.

On the other hand, the Thermalright Peerless Assassin 120 SE comes with a comprehensive installation kit, including a backplane and brackets for both Intel and AMD platforms. Given its double tower design, it may require more careful handling during installation, but the clarity of included instructions helps demystify the process for users.

Price Comparison

In terms of pricing, the ARCTIC Freezer 36 is more budget-friendly at £22.99, which may be appealing to users looking for solid performance without breaking the bank. The Thermalright Peerless Assassin 120 SE, priced at £29.99, offers additional features and a more robust design, which could justify the higher price for users seeking top-tier cooling solutions.

Ultimately, the choice between the two may come down to budget constraints and specific cooling needs. The ARCTIC Freezer 36 provides excellent value for users with high-performance CPUs, while the Thermalright Peerless Assassin 120 SE caters to those who desire advanced performance and compatibility across various platforms.

Which should you buy?

Choosing between the ARCTIC Freezer 36 and the Thermalright Peerless Assassin 120 SE ultimately depends on your specific requirements. If you're looking for an affordable, efficient solution that excels with high-end CPUs, the ARCTIC Freezer 36 is an excellent choice. However, if you require superior cooling performance, versatility in compatibility, and a slightly more robust design, the Thermalright Peerless Assassin 120 SE is worth the investment. Both coolers offer solid performance, making them reliable options for any PC build.

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ARCTIC Freezer 36 vs Thermalright Peerless Assassin 120 SE CPU Air Cooler | versusfinder