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ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU vs Thermalright Assassin King 120 SE White ARGB CPU

Updated July 2026 — ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU wins on radiator and fans, Thermalright Assassin King 120 SE White ARGB CPU wins on height and noise.

The ARCTIC Liquid Freezer III Pro offers superior cooling performance and advanced features, making it the better choice for enthusiasts. However, the Thermalright Assassin King 120 SE is a great budget option.

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

Cooling Performance

ARCTIC has a 360 mm radiator and three fans.

Design

Sleek design with integrated VRM fan.

Noise Levels

Quieter operation under load.

Why Thermalright Assassin King 120 SE White ARGB CPU is better

Price

Thermalright is significantly cheaper.

Installation

Simpler air-cooling setup.

Weight

Lighter at 0.64 kg.

Overall score

ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU
85
Thermalright Assassin King 120 SE White ARGB CPU
55

Specifications

SpecARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPUThermalright Assassin King 120 SE White ARGB CPU
Socket SupportAM5, LGA1700AM4, LGA1700
Fan TypePWMPWM
RGB LightingYesYes
Heat PipesN/A5
AirflowHighModerate

Dimension comparison

ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPUThermalright Assassin King 120 SE White ARGB CPU

Overview of the ARCTIC Liquid Freezer III Pro 360 A-RGB and Thermalright Assassin King 120 SE White ARGB

The ARCTIC Liquid Freezer III Pro 360 A-RGB is a powerful all-in-one (AIO) liquid cooler that emphasizes performance and aesthetics. In contrast, the Thermalright Assassin King 120 SE White ARGB is a more budget-friendly air cooler that still delivers decent cooling capabilities. With the ARCTIC priced at $94.99 and the Thermalright at just $19.82, there's a significant cost difference of about 377%.

Cooling Performance

The ARCTIC Liquid Freezer III Pro features a substantial 360 mm radiator and three 120 mm fans, providing efficient cooling under high loads. This setup is particularly beneficial for overclocked CPUs or high-performance systems. On the other hand, the Thermalright Assassin King 120 SE utilizes a single 120 mm fan and five heat pipes, which, while effective, may not match the cooling capacity of the ARCTIC under intense conditions. Users who prioritize extreme performance may find the ARCTIC superior, while those with moderate needs might be satisfied with the Thermalright.

Design and Aesthetics

In terms of aesthetics, both coolers offer RGB lighting, but they cater to different visual preferences. The ARCTIC Liquid Freezer III Pro boasts a sleek design with an integrated VRM fan and a black finish, which may appeal to users looking for a sophisticated, understated look. Conversely, the Thermalright Assassin King 120 SE features a striking white design with colorful ARGB effects, targeting consumers who prefer a brighter, more vivid appearance in their builds. Each cooler's design will resonate differently depending on individual tastes, making this a subjective choice.

Installation and Compatibility

The ARCTIC Liquid Freezer III Pro is designed for compatibility with both AMD and Intel sockets, including the latest AM5 and LGA1700. Its native offset mounting ensures efficient heat transfer, which can be a significant advantage during installation. The Thermalright Assassin King 120 SE also supports a wide range of sockets, including AMD AM4 and LGA1700. However, its installation may be simpler due to its less complex air-cooling setup. Both coolers provide essential mounting hardware, but the AIO design of the ARCTIC may require more space and planning for tubing management.

Noise Levels

Noise levels can make a significant impact on the overall user experience, especially during intensive tasks. The ARCTIC Liquid Freezer III Pro is designed with performance in mind, featuring PWM-controlled fans that can operate quietly at low speeds while maintaining high airflow when needed. The Thermalright Assassin King 120 SE also incorporates a PWM fan with a maximum noise level of 25.6 dB(A), ensuring a quiet operation during normal use. However, the ARCTIC’s advanced fan design may offer quieter performance under load, making it a better choice for users prioritizing silence.

Build Quality and Durability

Build quality is an essential factor when investing in cooling solutions. The ARCTIC Liquid Freezer III Pro features high-quality materials aimed at longevity, including a robust radiator and durable fans. The integrated cable management system further enhances its durability by reducing wear and tear on cables. The Thermalright Assassin King 120 SE, while also well-built, uses materials that may not match the premium feel of the ARCTIC. However, its S-FDB bearings and aluminum heat sink are designed for a long service life, ensuring reliability for users on a budget.

Brand Reputation and Support

ARCTIC has established itself as a reputable brand in the cooling market, known for its innovative designs and customer support. The ARCTIC Liquid Freezer III Pro has garnered attention for its efficiency and performance. On the other hand, Thermalright, with over 20 years of experience, has a strong following, particularly among budget-conscious gamers and builders. Both brands offer solid support, but ARCTIC's focus on high-performance cooling solutions may attract enthusiasts looking for more than just basic functionality.

Which should you buy?

Ultimately, the choice between the ARCTIC Liquid Freezer III Pro 360 A-RGB and the Thermalright Assassin King 120 SE White ARGB boils down to your specific needs and budget. If you're seeking top-tier performance, advanced cooling technology, and aesthetics, the ARCTIC is the clear winner, albeit at a higher price of $94.99. However, if you're looking for a more economical solution that still provides decent cooling for everyday use, the Thermalright at $19.82 offers great value for money. Assess your requirements carefully, as investing more upfront in the ARCTIC may yield better performance and longevity in the long run.