ARCTIC P12 Pro Reverse – 3 Pack – vs Thermalright Peerless Assassin 120 SE V3 CPU Air
Updated August 2026 — ARCTIC P12 Pro Reverse – 3 Pack – wins on noise level, Thermalright Peerless Assassin 120 SE V3 CPU Air wins on compatibility and cooling efficien.
The ARCTIC P12 Pro Reverse is a cost-effective fan with excellent airflow, while the Thermalright Peerless Assassin offers superior CPU cooling performance. Choose based on your specific needs.
Why ARCTIC P12 Pro Reverse – 3 Pack – is better
Price
ARCTIC P12 Pro Reverse is significantly cheaper.
Noise
ARCTIC P12 Pro Reverse operates quieter.
Design
ARCTIC P12 Pro Reverse has a sleek aesthetic.
Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better
Cooling
Thermalright Peerless Assassin has superior heat dissipation.
Build Quality
Thermalright Peerless Assassin features a robust dual-tower design.
Compatibility
Thermalright Peerless Assassin supports a wider range of CPUs.
Overall score
Specifications
| Spec | ARCTIC P12 Pro Reverse – 3 Pack – | Thermalright Peerless Assassin 120 SE V3 CPU Air |
|---|---|---|
| Airflow | High | Very High |
| Static Pressure | High | Very High |
| Noise Level | Low | Moderate |
| Bearing Type | FDB | PWM |
| Heat Pipes | None | 6 |
Dimension comparison
Overview of ARCTIC P12 Pro Reverse and Thermalright Peerless Assassin 120 SE V3
The ARCTIC P12 Pro Reverse is a 120 mm premium fan designed for optimal airflow with a unique reversed airflow feature. In contrast, the Thermalright Peerless Assassin 120 SE V3 is a robust CPU air cooler that boasts a dual-tower design with dual fans aimed at maximizing heat dissipation. While both products serve cooling functions, their applications differ, making them suitable for various setups. The P12 Pro Reverse is priced at $18.49, whereas the Peerless Assassin comes in at $35.90, making it approximately 94% more expensive.
Design and Build Quality
The ARCTIC P12 Pro Reverse features a sleek design, utilizing hydrodynamic bearings for smooth operation. Its reversed airflow is particularly advantageous for glass-front PC cases, ensuring that aesthetics are not compromised while maintaining performance. The precise manufacturing reduces vibrations, enhancing durability and quiet operation. On the other hand, the Thermalright Peerless Assassin has a more complex structure, featuring a double-tower configuration and six heat pipes designed to enhance heat dissipation efficiency. The aluminum heatsink cover adds to its sturdiness while ensuring effective cooling. Overall, while both designs are tailored for performance, the choice between aesthetic preference and robust cooling structure plays a significant role here.
Cooling Performance
The cooling performance of the ARCTIC P12 Pro Reverse is highlighted by its ability to generate airflow ranging from 500 to 3000 RPM, making it highly effective even in densely packed setups. Its high static pressure capability ensures reliable cooling through radiators and mesh structures. Conversely, the Thermalright Peerless Assassin utilizes dual PWM fans that can reach speeds of up to 2000 RPM, delivering an impressive air volume of 70.84 CFM. This dual-fan setup is designed to provide superior heat dissipation for CPUs, making it ideal for overclocking scenarios. Depending on your specific cooling needs, either product can perform exceptionally well, but the P12 Pro Reverse offers a broader RPM range.
Noise Levels
The ARCTIC P12 Pro Reverse is engineered to operate quietly, thanks to its smooth-running fluid dynamic bearing that minimizes noise during operation. While specific noise levels are not detailed, its design aims for a quiet user experience. In contrast, the Thermalright Peerless Assassin operates with a maximum noise level of ≤29.8 dB(A) while under load, which is reasonable for a dual-fan cooler. If noise levels are a critical factor for you, the ARCTIC P12 Pro Reverse is likely to be the quieter option, making it suitable for builds where silence is paramount.
Compatibility
The ARCTIC P12 Pro Reverse is versatile and can be integrated into various setups, especially those with glass panels where aesthetics are a concern. However, it is primarily a fan and may require additional components for optimal CPU cooling. The Thermalright Peerless Assassin is designed for broad compatibility, supporting Intel LGA and AMD AM4/AM5 sockets. This makes it a solid choice for users looking to upgrade their CPU cooling without worrying about compatibility issues. If you're building or upgrading a system with specific CPU requirements, the Peerless Assassin offers a more tailored solution.
Installation Process
The installation process for the ARCTIC P12 Pro Reverse is straightforward, especially for users familiar with fan mounting. Its design allows for easy integration into most PC cases. On the other hand, the Thermalright Peerless Assassin comes with mounting accessories and installation instructions, making it accessible for users of all skill levels. However, users need to utilize the original backplate of the motherboard for AMD installations, which may add a step to the process. For those who prefer a simpler installation experience, the P12 Pro Reverse might be the better choice.
Price Comparison
At $18.49, the ARCTIC P12 Pro Reverse is a budget-friendly option, especially for users looking to enhance their airflow without breaking the bank. Meanwhile, the Thermalright Peerless Assassin, priced at $35.90, is nearly double the cost of the P12 Pro Reverse. This price difference of about 94% reflects the additional features and cooling capabilities offered by the Peerless Assassin. If you are on a tight budget and seeking an effective fan, the P12 Pro Reverse could be the better investment. However, for those prioritizing CPU cooling performance, the extra cost of the Peerless Assassin may be justified.
Which should you buy?
Choosing between the ARCTIC P12 Pro Reverse and the Thermalright Peerless Assassin 120 SE V3 ultimately depends on your specific cooling needs and budget. The P12 Pro Reverse is an excellent choice for users seeking a cost-effective solution for enhanced airflow, especially in aesthetically-focused builds. It offers flexibility in installation and operates quietly. Conversely, the Peerless Assassin stands out for its superior cooling performance, dual-tower design, and broad compatibility with various CPU sockets. If you're looking for effective CPU cooling and are willing to invest more, the Peerless Assassin is the way to go. Ultimately, your choice should align with your cooling requirements and overall build objectives.

