ARCTIC Liquid Freezer III Pro 240 A-RGB - vs Thermalright Assassin X 120R SE V2 CPU Cooler, 4×
Updated August 2026 — ARCTIC Liquid Freezer III Pro 240 A-RGB - leads on cooling and design.
The ARCTIC Liquid Freezer III Pro 240 A-RGB offers superior cooling performance and features, making it the better choice for high-performance systems. However, the Thermalright Assassin X 120R SE V2 provides excellent value for budget builds.
Why ARCTIC Liquid Freezer III Pro 240 A-RGB - is better
Cooling Performance
Larger 240 mm radiator provides better heat dissipation.
Features
Includes an integrated VRM fan for enhanced cooling.
Aesthetics
Customizable RGB lighting enhances visual appeal.
Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better
Price
Significantly lower cost at $16.59.
Size
Compact design fits in more cases.
Noise Level
Operates quietly under load.
Overall score
Specifications
| Spec | ARCTIC Liquid Freezer III Pro 240 A-RGB - | Thermalright Assassin X 120R SE V2 CPU Cooler, 4× |
|---|---|---|
| Socket Support | LGA1700/AM5 | LGA1150/AM4 |
| Fan Speed | PWM | 1550 RPM |
| Heat Pipes | N/A | 4x6mm |
| RGB Lighting | Yes | Yes |
| Warranty | 6 years | 2 years |
Dimension comparison
Overview of the ARCTIC Liquid Freezer III Pro 240 A-RGB
The ARCTIC Liquid Freezer III Pro 240 A-RGB is a powerful all-in-one (AIO) CPU cooler designed for high-performance systems. With a price tag of $80.00, it features a 240 mm radiator and a PWM pump that enhances cooling efficiency. This cooler is compatible with both AMD AM5/AM4 and Intel LGA1851/1700 CPUs, ensuring broad compatibility across modern platforms. It also includes a unique VRM fan that actively cools the voltage converters, a feature not commonly found in many CPU coolers.
Overview of the Thermalright Assassin X 120R SE V2
In contrast, the Thermalright Assassin X 120R SE V2 is a budget-friendly CPU cooler priced at $16.59. This cooler is equipped with four 6 mm heat pipes and a 120 mm PWM fan that runs at a maximum speed of 1550 RPM. It supports various Intel and AMD sockets, including LGA1700 and AM5. The Assassin X is designed for users who need efficient cooling at a lower price point, making it an attractive choice for budget-conscious builds.
Cooling Performance
The ARCTIC Liquid Freezer III Pro 240 A-RGB is engineered for superior cooling performance, particularly under heavy loads. The larger 240 mm radiator provides a greater surface area, which translates into more effective heat dissipation. The P12 Pro fan, included in this cooler, is optimized for performance at low speeds, allowing it to remain quiet while still achieving high cooling efficiency. In contrast, the Thermalright Assassin X 120R SE V2, while effective with its 120 mm fan, may not match the cooling capacity of the ARCTIC due to its smaller size and lower RPM capability. This makes the ARCTIC a better option for high-performance setups.
Noise Levels
Noise levels are an essential consideration for many PC builders. The ARCTIC Liquid Freezer III Pro 240 A-RGB manages to balance performance and noise, particularly at lower fan speeds where it operates quietly. Its design includes features aimed at minimizing audible output, making it suitable for quiet computing environments. The Thermalright Assassin X 120R SE V2 also boasts a low noise level of under 25.6 dB(A) thanks to its S-FDB bearings, which helps maintain a tranquil atmosphere during operation. While both models aim for quiet performance, the ARCTIC’s larger cooling setup may have an edge.
Installation and Compatibility
In terms of installation, both coolers provide solid compatibility with a range of CPU sockets. The ARCTIC Liquid Freezer III Pro 240 A-RGB is designed with native offset mounting for both Intel and AMD CPUs, ensuring optimized contact pressure for better heat transfer. This can lead to a straightforward installation experience. The Thermalright Assassin X 120R SE V2, while also user-friendly, includes metal fasteners that simplify installation across supported platforms. Given its lower height of 148 mm, it is compatible with a broader range of cases, making it a versatile choice for various builds.
Aesthetic Appeal
Aesthetic considerations are becoming increasingly important in PC builds. The ARCTIC Liquid Freezer III Pro 240 A-RGB features customizable RGB lighting that can enhance the visual appeal of any system. Its sleek design is intended to complement modern gaming rigs and workstations alike. On the other hand, the Thermalright Assassin X 120R SE V2 also incorporates RGB lighting, but its overall aesthetic is more understated. While both coolers offer RGB features, the ARCTIC's advanced lighting options may appeal more to gamers and enthusiasts looking to showcase their builds.
Price Comparison
When it comes to pricing, there is a significant difference between the two coolers. The ARCTIC Liquid Freezer III Pro 240 A-RGB is priced at $80.00, making it about 383% more expensive than the Thermalright Assassin X 120R SE V2, which is available for just $16.59. This price disparity may lead users to consider their budget and performance needs carefully. For those building a high-end system, the ARCTIC may justify its price with superior performance and features. In contrast, budget-conscious users or those with modest cooling requirements may find the Thermalright a more suitable option.
Which should you buy?
In summary, the choice between the ARCTIC Liquid Freezer III Pro 240 A-RGB and the Thermalright Assassin X 120R SE V2 largely depends on your specific needs and budget. The ARCTIC cooler is a powerhouse designed for high-performance systems, offering superior cooling capabilities and advanced features like an integrated VRM fan and customizable RGB lighting. However, this comes at a higher price point. The Thermalright Assassin X, while not as powerful, offers excellent value for users seeking effective cooling on a budget. Ultimately, if you prioritize performance and aesthetics, the ARCTIC is the way to go; if you need a reliable and affordable cooler, the Thermalright Assassin X stands out as a strong contender.

