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

Updated August 2026The ARCTIC Liquid Freezer III Pro 360 offers superior performance and advanced features, making it the better choice for enthusiasts, while the Thermalright Peerless Assassin 120 SE ARGB is a budget-friendly option for casual users.

The ARCTIC Liquid Freezer III Pro 360 offers superior performance and advanced features, making it the better choice for enthusiasts, while the Thermalright Peerless Assassin 120 SE ARGB is a budget-friendly option for casual users.

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

Cooling Performance

ARCTIC has advanced cooling technology.

Design

ARCTIC features integrated cable management.

Brand Reputation

ARCTIC is known for high-performance solutions.

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

Price

Thermalright is significantly cheaper.

Compatibility

Thermalright supports more socket types.

Aesthetics

Thermalright has colorful ARGB lighting.

Overall score

ARCTIC Liquid Freezer III Pro 360 - AIO CPU Cooler
85
Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
65

Specifications

SpecARCTIC Liquid Freezer III Pro 360 - AIO CPU CoolerThermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
Price£67.49£28.79
Max RPM20001500
Airflow80 CFM66.17 CFM
Noise Level≤25 dB(A)≤25.6 dB(A)
Socket SupportLGA1851, LGA1700LGA115X, AM4, AM5

Dimension comparison

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

Price Comparison

The ARCTIC Liquid Freezer III Pro 360 is priced at £67.49, while the Thermalright Peerless Assassin 120 SE ARGB is significantly more affordable at £28.79. This pricing difference of £38.70 highlights a stark contrast in the market positioning of these two CPU coolers. The higher price of the ARCTIC unit can be attributed to its advanced features and technology, which may justify the investment for performance enthusiasts. In contrast, the Thermalright model offers a budget-friendly alternative without compromising on essential cooling capabilities, making it suitable for casual users or those on a tighter budget.

Cooling Performance

In terms of cooling performance, the ARCTIC Liquid Freezer III Pro 360 is designed to excel under high loads, featuring the P12 PRO fan, which is more powerful and quieter than its predecessor. This fan ensures optimal cooling efficiency, especially during intensive tasks. The integrated VRM fan further enhances performance by lowering the temperature of voltage converters, ultimately contributing to a more stable system. On the other hand, the Thermalright Peerless Assassin 120 SE ARGB utilises two PWM fans that deliver a maximum airflow of 66.17 CFM at a noise level of 25.6 dB(A). While it may not match the advanced cooling technology of the ARCTIC model, it still provides satisfactory performance for mid-range systems.

Design and Aesthetics

The design of the ARCTIC Liquid Freezer III Pro 360 is engineered for both functionality and aesthetics, featuring an integrated cable management system that minimises clutter. This allows for a cleaner build with only one visible cable connected to the motherboard. In contrast, the Thermalright Peerless Assassin 120 SE ARGB boasts colourful ARGB lighting effects, appealing to users who prioritise aesthetics in their builds. While the Thermalright's design may not focus on cable management, it offers a visually striking option that can enhance the overall look of a gaming rig.

Installation Process

When it comes to installation, the ARCTIC Liquid Freezer III Pro 360 features native offset mounting for both Intel and AMD platforms, ensuring efficient heat transfer by shifting the cold plate centre towards the CPU hotspot. This thoughtful design simplifies the installation process, making it a user-friendly option for builders. Conversely, the Thermalright Peerless Assassin 120 SE ARGB comes with various mounting plates and fasteners for compatibility with a range of Intel and AMD socket platforms, including the latest AM5. While both coolers are designed to facilitate easy installation, the ARCTIC model’s unique mounting system may provide an edge in performance-focused setups.

Compatibility

The ARCTIC Liquid Freezer III Pro 360 supports Intel socket types LGA1851 and LGA1700, as well as a native design for AMD processors. This compatibility makes it a versatile choice for users with different CPU brands. In comparison, the Thermalright Peerless Assassin 120 SE ARGB supports a broader range of socket types, including Intel's LGA115X, LGA1200, LGA1700, and AMD's AM4 and AM5. This extensive compatibility ensures that the Thermalright cooler can cater to a wider audience, making it an excellent option for those building systems with various CPU configurations.

Noise Levels

Noise levels are an important consideration for many users. The ARCTIC Liquid Freezer III Pro 360 operates quietly, particularly at low speeds, thanks to the advanced design of the P12 PRO fan, which is both powerful and silent under load. While specific noise levels are not provided, its focus on quieter operation may appeal to users seeking a tranquil computing environment. Conversely, the Thermalright Peerless Assassin 120 SE ARGB operates at a maximum noise level of 25.6 dB(A), which is relatively quiet for an air cooler. Users who prioritise silence may find both options suitable, but the ARCTIC’s design may provide a slight advantage in terms of quieter operation under load.

Brand Reputation

ARCTIC is known for its high-performance cooling solutions, with a focus on innovative technology and quality. The Liquid Freezer III Pro 360 reflects this reputation, offering advanced features aimed at serious gamers and performance enthusiasts. Thermalright, on the other hand, boasts over 20 years of experience in the cooling industry and is well-regarded for producing reliable and cost-effective cooling solutions. While both brands have established themselves in the market, ARCTIC’s focus on premium performance may attract users willing to invest more for top-tier cooling.

Which should you buy?

Ultimately, the choice between the ARCTIC Liquid Freezer III Pro 360 and the Thermalright Peerless Assassin 120 SE ARGB depends on your specific needs and budget. If you seek top-tier performance, advanced cooling technology, and a willingness to invest more, the ARCTIC model is likely the better option. However, if budget constraints are a primary concern or if you are building a mid-range system, the Thermalright cooler offers excellent value with its competitive pricing and reliable performance. Each cooler has its strengths, so consider what aspects matter most to you before making a decision.

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