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

Updated August 2026The ARCTIC Liquid Freezer III Pro 360 offers superior cooling performance and advanced features, making it the better choice for enthusiasts. The Thermalright Peerless Assassin 120 SE is a solid budget option but lacks the premium capabilities of the ARCTIC cooler.

The ARCTIC Liquid Freezer III Pro 360 offers superior cooling performance and advanced features, making it the better choice for enthusiasts. The Thermalright Peerless Assassin 120 SE is a solid budget option but lacks the premium capabilities of the ARCTIC cooler.

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

Cooling Performance

ARCTIC has integrated VRM fan for better cooling.

Noise Levels

ARCTIC promises quieter operation under load.

Build Quality

ARCTIC uses premium materials for durability.

Why Thermalright Peerless Assassin 120 SE CPU Air Cooler is better

Price

Thermalright is significantly cheaper.

Weight

Thermalright is lighter and easier to handle.

Compatibility

Thermalright supports a wider range of sockets.

Overall score

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

Specifications

SpecARCTIC Liquid Freezer III Pro 360 - AIO CPU CoolerThermalright Peerless Assassin 120 SE CPU Air Cooler
Price£67.49£29.99
TDPN/A120-265W
Noise LevelN/A25.6 dB(A)
Fan Count12
MountingOffsetMetal Fasteners

Dimension comparison

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

Overview of the ARCTIC Liquid Freezer III Pro 360

The ARCTIC Liquid Freezer III Pro 360 is a high-end AIO CPU cooler priced at £67.49. This cooler is designed for optimal heat dissipation through several advanced features. It employs a contact frame specifically for Intel LGA1851 and LGA1700, ensuring efficient pressure distribution for longer CPU life. Moreover, it utilises ARCTIC's P12 PRO fan technology, which promises improved performance, especially under high load conditions.

The integrated VRM fan is a standout feature, as it cools the voltage regulators, enhancing system reliability. This cooler also boasts a native offset mounting system for both Intel and AMD platforms, which aids in effective heat transfer. With its integrated cable management, users can enjoy a cleaner installation with minimal visible cables.

Overview of the Thermalright Peerless Assassin 120 SE

The Thermalright Peerless Assassin 120 SE, retailing at £29.99, offers a budget-friendly alternative in the CPU cooling market. This air cooler features a double tower design, which enhances cooling performance while maintaining compatibility with various CPU sockets, including Intel 115X/1200/1700 and AMD AM4.

Equipped with two PWM fans, the Peerless Assassin can achieve an air flow rate of 66.17 CFM at a noise level of 25.6 dB(A), making it a relatively quiet option for gamers and professionals alike. Its six 6mm heat pipes employ AGHP technology, which assists in better heat dissipation, especially under varying orientations. The overall design and material selection, including a copper base and aluminium heat sink, contribute to its effective cooling capabilities.

Performance Comparison

In terms of cooling performance, the ARCTIC Liquid Freezer III Pro 360 is engineered for high efficiency and low noise levels, especially when under heavy workloads. The inclusion of the integrated VRM fan specifically targets voltage converters, ensuring that the cooler can handle intense processing tasks without overheating.

Conversely, the Thermalright Peerless Assassin 120 SE also performs admirably, particularly for a budget cooler. With a thermal design power (TDP) rating of 120 to 265W, it competes well against the more expensive ARCTIC cooler in terms of raw cooling capacity. However, its performance might not match that of the Liquid Freezer III Pro 360 under extreme conditions, given that it does not have the same advanced features such as the integrated VRM fan.

Noise Levels

When evaluating noise levels, the ARCTIC Liquid Freezer III Pro 360 promises a quieter operation, largely due to its superior fan technology designed for optimal performance even at lower speeds. While specific noise levels are not disclosed, the design aims for minimal sound output during operation.

On the other hand, the Thermalright Peerless Assassin 120 SE has a maximum noise level of 25.6 dB(A), which is relatively quiet for a CPU air cooler. However, users seeking an ultra-silent operation might find the ARCTIC cooler's design more appealing, especially during high-demand tasks where noise can be a concern.

Installation and Compatibility

Installation ease is an essential factor when choosing a CPU cooler. The ARCTIC Liquid Freezer III Pro 360 features native offset mounting for Intel and AMD platforms, which can facilitate a more straightforward installation process. Additionally, its integrated cable management helps maintain a tidy build, reducing clutter around the motherboard.

In contrast, the Thermalright Peerless Assassin 120 SE comes with metal fasteners for both Intel and AMD sockets, ensuring a secure fit. Its dimensions are 125(L) x 135(W) x 155(H) mm, which is manageable for most cases, but users need to consider whether their case can accommodate this height. Overall, both coolers offer compatibility with a range of CPU sockets, but the ARCTIC's design may provide a more streamlined experience.

Build Quality and Design

The ARCTIC Liquid Freezer III Pro 360 showcases a premium build quality with its sophisticated design and materials aimed at high performance. The cooler’s advanced features demonstrate a commitment to durability and efficiency, which is reflected in its price point of £67.49.

Conversely, the Thermalright Peerless Assassin 120 SE, priced at £29.99, is constructed with cost-effectiveness in mind, utilising materials such as aluminium and copper. While it may not reach the same level of premium aesthetics or build quality as the ARCTIC cooler, it still offers a solid performance for its price and caters well to users who prioritise budget over premium features.

Target Audience

The ARCTIC Liquid Freezer III Pro 360 is clearly tailored for enthusiasts and gamers who demand top-tier performance and are willing to invest in high-quality components. Its advanced cooling capabilities make it suitable for high-performance CPUs and overclocking scenarios.

Conversely, the Thermalright Peerless Assassin 120 SE targets budget-conscious consumers who want reliable cooling without breaking the bank. Its performance is adequate for mid-range systems, making it a solid choice for casual gamers and users who don't push their CPUs to the limit.

Which should you buy?

Choosing between the ARCTIC Liquid Freezer III Pro 360 and the Thermalright Peerless Assassin 120 SE ultimately depends on your specific needs and budget. If you are an enthusiast looking for superior cooling performance, low noise levels, and premium features, the ARCTIC cooler is worth the investment at £67.49. However, if you are seeking a reliable and cost-effective solution for standard gaming or productivity tasks, the Thermalright cooler at £29.99 offers excellent value without compromising on essential performance.

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