ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU vs Thermalright Peerless Assassin 120 Digital ARGB
Updated July 2026 — ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU wins on radiator size and weight, Thermalright Peerless Assassin 120 Digital ARGB wins on height and depth.
The ARCTIC Liquid Freezer III Pro offers superior cooling performance and advanced features, while the Thermalright Peerless Assassin 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
Liquid cooling system provides better efficiency.
Noise Levels
Quieter operation under load.
Design
Sleek design with RGB lighting.
Why Thermalright Peerless Assassin 120 Digital ARGB is better
Price
Significantly cheaper option.
Installation
Straightforward installation process.
Compatibility
Supports more Intel socket types.
Overall score
Specifications
| Spec | ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU | Thermalright Peerless Assassin 120 Digital ARGB |
|---|---|---|
| Cooling Type | Liquid | Air |
| Fan Speed | PWM | 1850 RPM |
| Airflow | N/A | 88.89 CFM |
| Noise Level | Low | ≤25.6 dB(A) |
| Heat Pipes | N/A | 6 |
Dimension comparison
Overview of ARCTIC Liquid Freezer III Pro 360 A-RGB and Thermalright Peerless Assassin 120 Digital ARGB Black
The ARCTIC Liquid Freezer III Pro 360 A-RGB is priced at $94.99, while the Thermalright Peerless Assassin 120 Digital ARGB Black is significantly cheaper at $45.90, making it about 17% less expensive. Both products cater to CPU cooling but differ in their cooling mechanisms, design, and features.
The ARCTIC model utilizes a liquid cooling system, which generally provides superior cooling efficiency compared to traditional air coolers like the Thermalright. The Peerless Assassin employs a dual-tower air cooling design featuring six heat pipes, which delivers effective heat dissipation for mid-range to high-performance CPUs.
Cooling Performance
When it comes to cooling performance, the ARCTIC Liquid Freezer III Pro offers advanced features such as a PWM pump and an integrated VRM fan. These elements work together to ensure optimal cooling during high loads, enhancing overall CPU performance. The PWM-controlled pump adjusts speed based on thermal demand, reducing noise while ensuring effective cooling.
On the other hand, the Thermalright Peerless Assassin leverages its six heat pipes and dual fans to maintain low temperatures. With a fan speed reaching 1850 RPM and an airflow of 88.89 CFM, it provides satisfactory cooling for most users. However, it may not match the cooling efficacy of the liquid cooler, particularly under extreme conditions.
Design and Aesthetics
In terms of design, the ARCTIC Liquid Freezer III Pro features a sleek, modern look with RGB lighting, making it visually appealing for gamers and PC builders who prioritize aesthetics. The 38 mm radiator allows for a clean installation without overwhelming the chassis' interior space.
Conversely, the Thermalright Peerless Assassin sports a more traditional air cooler design with a digital screen on its magnetic top cover. This feature not only enhances its visual appeal but also provides real-time information, which can be a nice touch for tech enthusiasts. Its dual-tower structure can be more visually imposing but may also take up more space in the case.
Installation and Compatibility
The ARCTIC Liquid Freezer III Pro is designed for easy installation with its native offset mounting for both AMD and Intel platforms, including AM5 and LGA1700. This feature increases the contact pressure for better heat transfer, which can be crucial for maintaining performance.
The Thermalright Peerless Assassin also offers wide compatibility, supporting multiple platforms such as AM4, AM5, and several Intel socket types. Its straightforward installation process is enhanced by the inclusion of dual-platform mounting clips, making it accessible for users of varying expertise.
Noise Levels
Noise levels are a crucial consideration for many users, especially those who prefer quiet operations. The ARCTIC Liquid Freezer III Pro is designed with quieter fans that perform effectively under low speeds, making it a great choice for noise-sensitive environments.
In contrast, the Thermalright Peerless Assassin operates at a maximum noise level of 25.6 dB(A), which is reasonable for an air cooler but may be more noticeable compared to the liquid cooler when under load. While both coolers aim to minimize noise, users seeking near-silent operation might lean towards the ARCTIC model.
Durability and Lifespan
The durability of cooling solutions is often linked to their design and materials. The ARCTIC Liquid Freezer III Pro features a high-quality construction that includes a powerful PWM pump designed for longevity. Additionally, the optimized contact pressure supports the health of the CPU over time, which can prolong the lifespan of both the cooler and the CPU.
The Thermalright Peerless Assassin employs a robust build with its pure copper heat pipes and base. This design ensures effective thermal conductivity, essential for long-term performance. The quality of the S-FDB bearings in its fans also contributes to the cooler's durability, ensuring that it can handle continuous operation without significant wear.
Price Considerations
The ARCTIC Liquid Freezer III Pro is priced at $94.99, while the Thermalright Peerless Assassin comes in at a budget-friendly $45.90, making the latter about 52% cheaper. For users with a tighter budget or those who do not require extreme cooling, the Thermalright offers a compelling value without sacrificing essential performance.
However, for users looking for the best cooling performance and willing to invest more, the ARCTIC model justifies its higher price with advanced features and better cooling capabilities, especially for overclocked systems.
Which should you buy?
Deciding between the ARCTIC Liquid Freezer III Pro 360 A-RGB and the Thermalright Peerless Assassin 120 Digital ARGB Black ultimately boils down to your specific needs and budget. If you prioritize top-tier cooling performance and aesthetics, and are willing to invest around $94.99, the ARCTIC is the superior choice. However, if you are seeking an effective, budget-friendly option for everyday use without extreme cooling demands, the Thermalright at $45.90 is an excellent alternative.

