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ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU Cooler vs Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler

Updated August 2026The ARCTIC Liquid Freezer III Pro 360 A-RGB offers superior cooling performance and advanced features, making it the better choice for enthusiasts. However, the Thermalright Peerless Assassin 120 SE provides excellent value for budget-conscious users.

The ARCTIC Liquid Freezer III Pro 360 A-RGB offers superior cooling performance and advanced features, making it the better choice for enthusiasts. However, the Thermalright Peerless Assassin 120 SE provides excellent value for budget-conscious users.

Why ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU Cooler is better

Cooling Performance

ARCTIC cooler has integrated VRM fan for better heat management.

Design

ARCTIC features sleek ARGB lighting for modern builds.

Noise Levels

ARCTIC operates quieter under load due to efficient fan design.

Why Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is better

Price

Thermalright is significantly cheaper.

Compatibility

Thermalright supports a wider range of CPU sockets.

Weight

Thermalright is lighter, making installation easier.

Overall score

ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU Cooler
85
Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
70

Specifications

SpecARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU CoolerThermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
BrandARCTICThermalright
Current Price£74.99£28.79
Fan Speed2000 RPM1500 RPM
Noise Level≤25 dB(A)≤25.6 dB(A)
Socket SupportLGA1700/AM5LGA1700/AM4

Dimension comparison

ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU CoolerThermalright Peerless Assassin 120 SE ARGB CPU Air Cooler

Price Comparison

The price difference between the ARCTIC Liquid Freezer III Pro 360 A-RGB and the Thermalright Peerless Assassin 120 SE ARGB is substantial, with the former costing £74.99 and the latter priced at just £28.79. This means that the ARCTIC cooler is almost three times more expensive than the Thermalright option. While the higher price of the ARCTIC cooler may reflect advanced features and performance capabilities, the Thermalright cooler provides a budget-friendly alternative without compromising essential cooling performance. For those on a tighter budget, the Thermalright option presents a compelling value proposition.

Cooling Performance

In terms of cooling performance, the ARCTIC Liquid Freezer III Pro 360 A-RGB is designed to handle the heat more effectively under high load conditions. Its P12 PRO fan is not only more powerful but also quieter than its predecessor, capable of achieving higher maximum speeds for optimal cooling. The Thermalright Peerless Assassin 120 SE, equipped with 6 heat pipes and dual PWM fans, aims to deliver efficient airflow and cooling performance. However, the ARCTIC cooler’s integrated VRM fan specifically targets voltage converter temperatures, ensuring reliable performance during intensive tasks. This feature gives the ARCTIC a distinct edge in cooling efficiency.

Installation and Compatibility

The ARCTIC Liquid Freezer III Pro 360 A-RGB boasts a native offset mounting system compatible with both Intel and AMD sockets, optimising contact pressure distribution for enhanced heat dissipation. It also integrates cable management to reduce clutter during installation. Conversely, the Thermalright Peerless Assassin 120 SE supports a wider range of CPU sockets, including Intel 115X/1200/1700/17XX/1851 and AMD AM4/AM5. This versatility makes the Thermalright cooler easier to install across various platforms. However, the ARCTIC's advanced mounting features may appeal more to enthusiasts looking for optimal performance.

Design and Aesthetics

When it comes to design, the ARCTIC Liquid Freezer III Pro 360 A-RGB features a sleek aesthetic with addressable RGB lighting, allowing for a visually striking build. Its integration of ARGB is designed to complement high-end gaming rigs and modern PC setups. The Thermalright Peerless Assassin 120 SE also features ARGB lighting but in a more traditional air cooler design. While both coolers offer aesthetic appeal, the ARCTIC’s design might integrate more seamlessly into RGB-centric builds, catering to users prioritising style alongside performance.

Noise Levels

In terms of noise levels, the ARCTIC Liquid Freezer III Pro 360 A-RGB is engineered to operate quietly, even under load, thanks to its powerful yet efficient fans. Specific noise levels are not provided, but the focus on low-speed performance suggests a quieter operation. The Thermalright Peerless Assassin 120 SE claims a maximum noise level of ≤25.6dB(A), which is generally considered quiet for CPU coolers. For users sensitive to noise, the ARCTIC may offer a more tranquil computing experience, especially in high-performance scenarios where fan speeds increase.

Brand Reputation

Both ARCTIC and Thermalright have established themselves as reputable brands in the cooling market. ARCTIC is known for its innovative designs and high-performance products, while Thermalright has over 20 years of experience, focusing on research and development for computer accessories. The reputation of both brands lends credibility to their respective products, with ARCTIC often being seen as a premium option, whereas Thermalright is recognised for delivering good value and reliable performance. This brand perception may influence the purchasing decision, depending on whether the buyer prioritises performance or cost-effectiveness.

Overall Value

When considering overall value, the ARCTIC Liquid Freezer III Pro 360 A-RGB justifies its higher price with advanced cooling features and superior design aimed at enthusiasts seeking optimal performance. The Thermalright Peerless Assassin 120 SE, on the other hand, offers solid performance at a significantly lower price point, making it an attractive choice for budget-conscious consumers. Each cooler presents a unique value proposition, with the ARCTIC targeting users who demand the best, while the Thermalright appeals to those looking for cost efficiency without sacrificing essential cooling capabilities.

Which should you buy?

Deciding between the ARCTIC Liquid Freezer III Pro 360 A-RGB and the Thermalright Peerless Assassin 120 SE hinges on your specific needs and budget. If you are an enthusiast seeking top-tier performance, advanced features, and a visually striking design, the ARCTIC cooler is the better choice despite its higher price. However, if you are looking for a reliable cooler that offers great performance at a more accessible price, the Thermalright Peerless Assassin 120 SE is a fantastic option that won’t break the bank. Ultimately, both products have merits, making them suitable for different types of users in the market for CPU coolers.

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ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU Cooler vs Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler | versusfinder