ARCTIC P12 Pro Reverse – 3 Pack – vs Thermalright Peerless Assassin 120 SE V2 CPU
Updated August 2026 — ARCTIC P12 Pro Reverse – 3 Pack – wins on noise level and design, Thermalright Peerless Assassin 120 SE V2 CPU wins on compatibility and cooling.
The ARCTIC P12 Pro Reverse offers excellent airflow and quiet operation at a budget-friendly price, while the Thermalright Peerless Assassin excels in heat dissipation for high-performance systems.
Why ARCTIC P12 Pro Reverse – 3 Pack – is better
Price
ARCTIC is significantly cheaper.
Noise Level
ARCTIC operates quieter.
Airflow
ARCTIC has higher RPM range.
Why Thermalright Peerless Assassin 120 SE V2 CPU is better
Cooling Performance
Thermalright has superior heat dissipation.
Build Quality
Thermalright features a dual-tower design.
Compatibility
Thermalright supports more CPU sockets.
Overall score
Specifications
| Spec | ARCTIC P12 Pro Reverse – 3 Pack – | Thermalright Peerless Assassin 120 SE V2 CPU |
|---|---|---|
| Max RPM | 3000 | 1850 |
| Noise Level | Quiet | 29.5 dBA |
| Static Pressure | High | Moderate |
| Socket Compatibility | Limited | Broad |
| Cooling Type | Fan | Cooler |
Dimension comparison
Overview of the Products
In this comparison, we will examine the ARCTIC P12 Pro Reverse and the Thermalright Peerless Assassin 120 SE V2 CPU Cooler. The ARCTIC fan retails for $18.49, while the Thermalright cooler is priced at $38.99, making it about 110% more expensive than the ARCTIC option. Both products cater to different cooling needs, with the ARCTIC fan focusing on airflow and versatility, while the Thermalright cooler emphasizes efficient heat dissipation and robust cooling capabilities.
Design and Build Quality
The ARCTIC P12 Pro Reverse features a unique design that allows for reversed airflow, drawing air in from the back side. This design is particularly beneficial for glass-fronted PC builds, where aesthetics are as important as performance. The fan is constructed with high-precision manufacturing, which minimizes vibrations and enhances durability.
On the other hand, the Thermalright Peerless Assassin boasts a dual-tower structure and six heat pipes, elevating its cooling performance significantly. Its design supports AMD AM4/AM5 and Intel LGA1851/1700 platforms, making it versatile for various desktop builds. The combination of dual 120mm PWM fans and a nickel-plated copper base ensures effective heat management.
Cooling Performance
Cooling performance is where the two products diverge significantly. The ARCTIC P12 Pro Reverse can operate at speeds ranging from 500 to 3000 RPM, providing flexibility for different cooling needs. Its high static pressure allows it to perform efficiently even in restrictive environments, such as dense radiators or mesh panels.
In contrast, the Thermalright Peerless Assassin features dual 120mm PWM fans that can reach up to 1850 RPM. While this is lower than the ARCTIC fan's maximum speed, the dual-tower design and six heat pipes create a more stable thermal performance, making it suitable for high-load scenarios such as gaming or multitasking.
Noise Levels
When considering noise levels, the ARCTIC P12 Pro Reverse is designed for quiet operation, thanks to its smooth-running fluid dynamic bearing (FDB). This design minimizes noise during operation, making it ideal for users who prioritize a quiet computing environment.
The Thermalright Peerless Assassin, with its dual fans, operates at a noise level of 29.5 dBA. While this is relatively quiet, it may produce more noise than the ARCTIC fan, particularly under heavy loads. Users who are sensitive to noise may find the ARCTIC fan more appealing for its quieter performance.
Installation and Compatibility
The ARCTIC P12 Pro Reverse is designed for versatility, featuring a 4-pin PWM connection and a Y cable splitter to allow for easy installation in various setups. Its lightweight design makes it easy to mount in different orientations, enhancing its compatibility with various cases.
In contrast, the Thermalright Peerless Assassin is specifically tailored for modern desktop systems, supporting a range of sockets including AMD AM4/AM5 and Intel LGA1851/1700. While its dual-tower design may require more space within a case, it is designed for straightforward installation, making it a practical choice for users upgrading their cooling solutions.
Price Comparison
The ARCTIC P12 Pro Reverse is priced at $18.49 for a three-pack, making it an attractive option for budget-conscious consumers. In comparison, the Thermalright Peerless Assassin costs $38.99. This price difference of about $20 highlights the ARCTIC fan's appeal for those looking to enhance airflow without breaking the bank. However, consumers must weigh the price against the performance benefits offered by the Thermalright cooler.
Target Audience
The ARCTIC P12 Pro Reverse is ideal for PC builders who value airflow and aesthetics, especially in glass-fronted cases. Its ability to adjust speeds and operate quietly makes it suitable for a variety of computing tasks. On the other hand, the Thermalright Peerless Assassin targets gamers and power users who require efficient heat dissipation during intense workloads. Its robust design and superior heat transfer capabilities make it a compelling choice for high-performance systems.
Which should you buy?
Ultimately, the decision between the ARCTIC P12 Pro Reverse and the Thermalright Peerless Assassin comes down to your specific cooling needs and budget. If you need a cost-effective solution that prioritizes airflow and quiet operation, the ARCTIC fan is an excellent choice at $18.49. Conversely, if you're looking for a high-performance CPU cooler that excels in heat dissipation, the Thermalright Peerless Assassin at $38.99 offers more advanced features and stability under load. Each product has its strengths, making them suitable for different types of users.

