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ARCTIC Liquid Freezer III Pro 240 A-RGB - vs Thermalright Assassin King 120 SE White ARGB CPU

Updated August 2026 — ARCTIC Liquid Freezer III Pro 240 A-RGB - leads on installation eas and cooling performa.

The ARCTIC Liquid Freezer III Pro offers superior performance and advanced features, making it the better choice for high-demand users, while the Thermalright Assassin King is a budget-friendly option.

Why ARCTIC Liquid Freezer III Pro 240 A-RGB - is better

Cooling Performance

Advanced cooling technologies for high-performance CPUs.

Design

Sleek black design with integrated cable management.

Durability

Built for longevity with dedicated VRM cooling.

Why Thermalright Assassin King 120 SE White ARGB CPU is better

Price

Significantly lower price point.

Size

Compact design suitable for medium cases.

Noise Level

Quiet operation with low noise levels.

Overall score

ARCTIC Liquid Freezer III Pro 240 A-RGB -
85
Thermalright Assassin King 120 SE White ARGB CPU
65

Specifications

SpecARCTIC Liquid Freezer III Pro 240 A-RGB -Thermalright Assassin King 120 SE White ARGB CPU
Cooling TypeLiquidAir
Socket CompatibilityAM5/AM4, LGA1700/1851AM4/AM5, LGA1700/1150/1151/1200/1851
Fan SpeedPWM Controlled1550 RPM
Noise LevelLow≤25.6 dB(A)
Warranty5 years3 years

Dimension comparison

ARCTIC Liquid Freezer III Pro 240 A-RGB -Thermalright Assassin King 120 SE White ARGB CPU

Overview of Cooling Solutions

When it comes to CPU coolers, both the ARCTIC Liquid Freezer III Pro 240 A-RGB and the Thermalright Assassin King 120 SE White ARGB offer distinct advantages for different users. The ARCTIC cooler is a 240 mm AIO water cooler priced at $80.00, while the Thermalright air cooler is a compact 120 mm solution available for just $19.82. The price difference of about 303% reflects their differing designs and intended applications.

The ARCTIC cooler is designed for users seeking high performance and advanced cooling capabilities, particularly for demanding tasks. In contrast, the Thermalright cooler serves those looking for an efficient and budget-friendly air cooling option. Understanding these two products' specifications and features helps in making an informed decision.

Cooling Performance

The ARCTIC Liquid Freezer III Pro 240 A-RGB boasts advanced cooling technologies that make it suitable for high-performance CPUs. Its 240 mm radiator and powerful P12 Pro fan ensure optimal cooling even under heavy loads, providing more performance at every speed. This model is particularly effective due to its native offset mounting that enhances heat dissipation.

On the other hand, the Thermalright Assassin King 120 SE White ARGB, with its five heat pipes and a PWM fan that operates at a maximum speed of 1550 rpm, offers a reliable cooling solution for mid-range systems. While its cooling performance is commendable, it may not match the extreme cooling efficiency of the ARCTIC model, especially when pushing the CPU to its limits.

Design and Aesthetics

The ARCTIC cooler features a sleek black design with A-RGB lighting, appealing to users who prioritize aesthetics alongside functionality. Its integrated cable management system reduces clutter, creating a clean look in any build. The 38 mm radiator adds a modern touch while ensuring effective heat dissipation.

Conversely, the Thermalright Assassin King 120 SE White ARGB presents a striking white finish with colorful A-RGB lighting effects. At 148 mm in height, it is designed for compatibility with medium-sized cases, making it a suitable choice for users who appreciate a stylish yet space-efficient cooler. Both products cater to aesthetic preferences, but the choice between black and white may depend on the overall theme of the build.

Compatibility and Installation

The ARCTIC Liquid Freezer III Pro 240 A-RGB supports multiple sockets, including AMD AM5/AM4 and Intel LGA1851/1700, ensuring broad compatibility with modern processors. Its optimized contact pressure distribution enhances both installation ease and cooling efficiency, making it an attractive option for versatile builds.

Similarly, the Thermalright Assassin King 120 SE White ARGB is compatible with a range of Intel and AMD sockets, including LGA1700 and AM4. Its installation is straightforward, thanks to the inclusion of corresponding mounting plates and fasteners. Both coolers provide excellent compatibility but may appeal to different user preferences regarding installation complexity and flexibility.

Noise Levels

In terms of noise levels, the ARCTIC Liquid Freezer III Pro is designed to operate quietly, especially at lower speeds. The P12 Pro fan is engineered for high performance while maintaining a low noise profile, ensuring that users can enjoy a quiet computing experience during both idle and high-load conditions.

The Thermalright Assassin King 120 SE White ARGB also prioritizes quiet operation, with its TL-C12CW-S fan boasting a noise level of less than 25.6 dB(A). This makes it a solid choice for those who value a tranquil environment while performing everyday tasks or gaming. Both coolers excel in this category, but the ARCTIC cooler may have a slight edge in performance under load.

Durability and Lifespan

The ARCTIC Liquid Freezer III Pro is built for longevity, with features like integrated PWM-controlled VRM fans that help maintain lower temperatures for voltage converters. This dedicated cooling can enhance the lifespan of both the CPU and the cooler itself, making it a wise investment for long-term use.

On the other hand, the Thermalright Assassin King 120 SE utilizes S-FDB bearings that promise up to 20,000 hours of service life. This durability is essential for users who want a reliable air cooler without frequent replacements. While both products are built to last, the ARCTIC cooler's advanced cooling features may give it an advantage in high-performance scenarios.

Price Comparison

The price difference between these two coolers is significant, with the ARCTIC Liquid Freezer III Pro retailing at $80.00 while the Thermalright Assassin King 120 SE is priced at just $19.82. This translates to about 303% more for the ARCTIC cooler. While the ARCTIC model offers advanced cooling features and performance, the Thermalright cooler provides excellent value for budget-conscious consumers.

Choosing between the two may come down to whether a user prioritizes performance and aesthetics over cost. For those on a tighter budget or with less demanding cooling needs, the Thermalright cooler is a far more economical choice.

Which should you buy?

Ultimately, the choice between the ARCTIC Liquid Freezer III Pro 240 A-RGB and the Thermalright Assassin King 120 SE White ARGB depends on your specific needs and budget. If you are looking for a high-performance cooling solution capable of handling demanding tasks, the ARCTIC cooler is worth the investment with its advanced features and superior performance. However, if you seek a reliable, budget-friendly option for moderate use, the Thermalright cooler delivers solid performance at a fraction of the cost. Evaluate your requirements and choose accordingly for the best cooling solution for your setup.