ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU vs Thermalright Peerless Assassin 120 SE V3 CPU Air
Updated July 2026 — ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU wins on weight, Thermalright Peerless Assassin 120 SE V3 CPU Air wins on height and depth.
The ARCTIC Liquid Freezer III Pro 360 A-RGB offers superior cooling performance and aesthetics, while the Thermalright Peerless Assassin 120 SE V3 is a budget-friendly option. Choose based on your cooling needs and budget.
Why ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU is better
Cooling Performance
ARCTIC handles heavy loads better.
Aesthetics
ARCTIC features A-RGB lighting.
Integrated Features
ARCTIC includes an integrated VRM fan.
Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better
Price
Thermalright is significantly cheaper.
Size
Thermalright has a more compact design.
Noise Levels
Thermalright operates quietly at lower speeds.
Overall score
Specifications
| Spec | ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU | Thermalright Peerless Assassin 120 SE V3 CPU Air |
|---|---|---|
| Cooling Type | AIO Liquid | Air |
| Max RPM | 1800 | 2000 |
| Air Volume | N/A | 70.84 CFM |
| Noise Level | Quiet | ≤29.8 dB(A) |
| Compatibility | AMD/Intel | AMD/Intel |
Dimension comparison
Overview of ARCTIC Liquid Freezer III Pro 360 A-RGB and Thermalright Peerless Assassin 120 SE V3
The ARCTIC Liquid Freezer III Pro 360 A-RGB is a high-performance AIO CPU cooler priced at $94.99, while the Thermalright Peerless Assassin 120 SE V3 is an air cooler available for just $35.90. This pricing illustrates a significant difference of about 63% between the two products, which may influence your decision based on budget and cooling requirements.
The ARCTIC model features a triple-fan design and is notable for its integrated VRM fan and advanced PWM pump, enhancing both cooling efficiency and aesthetic appeal with A-RGB lighting. In contrast, the Thermalright cooler utilizes a dual-tower design with dual fans and six heat pipes, aimed at delivering reliable cooling performance, particularly in budget builds.
Design and Aesthetics
The ARCTIC Liquid Freezer III Pro 360 A-RGB distinguishes itself with a sleek and modern aesthetic, complemented by its A-RGB lighting. This cooler features three 120 mm fans that not only contribute to its cooling capability but also add a visual flair to any build.
On the other hand, the Thermalright Peerless Assassin 120 SE V3 opts for a more functional design. Its double tower and dual fan setup are designed for optimal airflow and heat dissipation but lack the RGB elements that some users may prefer. While both coolers are designed for performance, the ARCTIC cooler clearly targets users looking for both function and style.
Performance and Cooling Efficiency
The ARCTIC Liquid Freezer III Pro 360 A-RGB is engineered for high-performance cooling, effectively handling heat through its three 120 mm fans and integrated VRM fan. This cooler is particularly effective under heavy loads, making it suitable for gaming and intensive workloads. The advanced PWM pump further ensures that cooling efficiency is maximized, even during peak performance.
In comparison, the Thermalright Peerless Assassin 120 SE V3, with its six heat pipes and dual PWM fans, also delivers solid cooling performance. It operates with a maximum fan speed of 2000 RPM and boasts an air volume of 70.84 CFM, providing adequate cooling for mid-range systems. While it may not match the high-performance levels of the ARCTIC, it offers commendable cooling for its price point, making it a viable option for budget-conscious consumers.
Noise Levels
When it comes to noise levels, the ARCTIC Liquid Freezer III Pro 360 A-RGB is designed to operate quietly, especially at lower fan speeds. The P12 PRO fans are engineered for performance without generating excessive noise, making it ideal for users who prioritize a silent operation in their builds.
Conversely, the Thermalright Peerless Assassin 120 SE V3 operates at a maximum noise level of 29.8 dB(A), which is still fairly quiet but may be noticeable compared to the ARCTIC. The PWM function on its fans adjusts speed according to temperature, which helps mitigate noise during less demanding tasks. For users who are sensitive to noise, the ARCTIC may be the more appealing choice.
Installation and Compatibility
The installation process for both coolers is designed to be user-friendly. The ARCTIC Liquid Freezer III Pro comes with an optimized contact frame for both Intel LGA1851/LGA1700 and AMD AM5/AM4 sockets, ensuring compatibility across a wide range of modern CPUs. The integrated cable management also simplifies the installation process, minimizing clutter.
The Thermalright Peerless Assassin 120 SE V3 also provides wide compatibility with its dual-platform support for Intel and AMD systems. However, it requires the use of the original backplate for AMD installations, which could complicate the setup for some users. Overall, while both coolers are accessible to install, the ARCTIC offers a more streamlined experience.
Durability and Build Quality
Both coolers exhibit strong build quality, but they focus on different aspects. The ARCTIC Liquid Freezer III Pro features a robust design with quality materials that ensure longevity, alongside an aluminum radiator. The integrated VRM fan adds an extra layer of durability by cooling critical components around the CPU.
The Thermalright Peerless Assassin 120 SE V3 also boasts a durable design, with an aluminum heatsink cover and six anti-oxidation heat pipes. Its dual-tower structure is engineered for stability and heat dissipation. While both coolers are built to last, the ARCTIC's additional features may provide an edge in terms of overall durability.
Price-to-Performance Ratio
In terms of price-to-performance ratio, the Thermalright Peerless Assassin 120 SE V3 stands out as an economical choice at $35.90. It provides decent cooling performance for lower-budget builds and is an attractive option for users who do not require extreme cooling capabilities.
On the other hand, the ARCTIC Liquid Freezer III Pro 360 A-RGB, priced at $94.99, offers premium features and superior cooling performance but at a higher cost. While it targets enthusiasts and gamers who seek the best, the price may deter those looking for economical solutions. Ultimately, the choice depends on your specific cooling needs and budget.
Which should you buy?
Choosing between the ARCTIC Liquid Freezer III Pro 360 A-RGB and the Thermalright Peerless Assassin 120 SE V3 comes down to your cooling requirements, budget, and aesthetic preferences. If you are looking for high-performance cooling, advanced features, and a visually striking design, the ARCTIC is worth the investment at $94.99. However, if you're on a tighter budget or need a reliable cooler for a standard build, the Thermalright at $35.90 offers excellent value without compromising too much on performance. Ultimately, both coolers have their strengths, making them suitable for different types of users.

