ARCTIC P12 Pro A-RGB - Powerful Premium Fan, vs Thermalright Peerless Assassin 120 Mini Black CPU
Updated August 2026 — ARCTIC P12 Pro A-RGB - Powerful Premium Fan, wins on noise level, Thermalright Peerless Assassin 120 Mini Black CPU wins on compatibility and cooling eff..
The ARCTIC P12 Pro A-RGB offers excellent value for general cooling needs, while the Thermalright Peerless Assassin 120 Mini Black excels in CPU cooling performance.
Why ARCTIC P12 Pro A-RGB - Powerful Premium Fan, is better
Price
ARCTIC is significantly cheaper at $12.49.
Speed Range
ARCTIC offers a wider speed range of 600-3000 RPM.
Noise Control
ARCTIC can stop completely at less than 5% PWM.
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
Cooling Performance
Thermalright has advanced heat dissipation with AGHP technology.
Airflow
Thermalright provides a maximum airflow of 66.87 CFM.
Build Quality
Thermalright features a robust design with six heat pipes.
Overall score
Specifications
| Spec | ARCTIC P12 Pro A-RGB - Powerful Premium Fan, | Thermalright Peerless Assassin 120 Mini Black CPU |
|---|---|---|
| Fan Type | PWM Fan | PWM Fan |
| Max RPM | 3000 | 1500 |
| Airflow | N/A | 66.87 CFM |
| Noise Level | N/A | 25.6 dB(A) |
| Bearing Type | Fluid Dynamic | S-FDB |
Dimension comparison
Overview of the ARCTIC P12 Pro A-RGB and Thermalright Peerless Assassin 120 Mini Black
The ARCTIC P12 Pro A-RGB is priced at $12.49, while the Thermalright Peerless Assassin 120 Mini Black costs $34.39, making the ARCTIC fan approximately 64% cheaper than its competitor. Both products cater to different cooling needs, with the ARCTIC fan designed for case airflow and the Thermalright cooler aimed at CPU cooling.
Design and Build Quality
The ARCTIC P12 Pro A-RGB features a sleek black design with a fluid dynamic bearing that minimizes noise during operation. Its precise manufacturing reduces vibrations, ensuring a quiet and efficient performance. The fan is built to penetrate dense radiators and mesh structures, enhancing its cooling capabilities. In contrast, the Thermalright Peerless Assassin 120 Mini Black has a fully blackened appearance with a CNC precision micro-engraved copper base. Its six heat pipes utilize AGHP technology to improve heat dissipation, showcasing a robust build quality aimed at high performance.
Cooling Performance
In terms of cooling performance, the ARCTIC P12 Pro A-RGB can operate at speeds ranging from 600 to 3000 RPM, making it highly versatile for various cooling scenarios. This wide speed range allows for tailored performance based on system requirements. On the other hand, the Thermalright Peerless Assassin 120 Mini Black features a PWM fan that operates at a maximum speed of 1500 RPM. While it has a lower speed compared to the ARCTIC, it offers an airflow of 66.87 CFM and operates at a noise level of just 25.6 dB(A), ensuring effective cooling without excessive sound.
Noise Levels
The ARCTIC P12 Pro A-RGB is designed for quiet operation, particularly at low speeds, thanks to its fluid dynamic bearing. While specific noise levels are not stated, its design minimizes vibrations, contributing to a quieter environment. Conversely, the Thermalright Peerless Assassin operates at a maximum noise level of 25.6 dB(A), which is relatively low for a CPU cooler. For users sensitive to noise, the ARCTIC fan's ability to stop completely at less than 5% PWM could offer a quieter option in low-demand scenarios.
Compatibility
The ARCTIC P12 Pro A-RGB is a 120mm PWM fan that can be used in various applications, making it versatile for different cooling setups, including case fans or radiator fans. The Thermalright Peerless Assassin 120 Mini Black is specifically designed for CPU cooling and supports multiple platforms, including Intel's LGA 1150/1151/1156/1200/1700 and AMD's AM4/AM5. This broader compatibility is advantageous for users looking to upgrade or replace their CPU cooler without worrying about mounting issues.
Installation and User Experience
The ARCTIC P12 Pro A-RGB comes with a Y-Cable splitter for easy installation across multiple fans, allowing users to manage their cooling configurations more efficiently. With its straightforward design, setting up the fan is user-friendly, even for those new to PC building. On the other hand, the Thermalright Peerless Assassin 120 Mini Black includes a mounting kit compatible with various CPU slots, along with installation instructions. This attention to detail ensures a hassle-free installation process, making it accessible for users of all experience levels.
Price Comparison
The ARCTIC P12 Pro A-RGB is priced at $12.49, while the Thermalright Peerless Assassin 120 Mini Black is available for $34.39. This price difference of about $21.90 indicates that the ARCTIC fan is approximately 64% less expensive. For budget-conscious consumers or those seeking to upgrade their cooling solutions without breaking the bank, the ARCTIC fan presents a compelling option. However, the Thermalright cooler's higher price reflects its advanced technology and targeted performance for CPU cooling.
Which should you buy?
Ultimately, your choice between the ARCTIC P12 Pro A-RGB and the Thermalright Peerless Assassin 120 Mini Black will depend on your specific cooling needs. If you are looking for an affordable and versatile fan suitable for various applications, the ARCTIC P12 Pro A-RGB is an excellent choice, especially given its low price of $12.49. However, if your primary focus is on effective CPU cooling with advanced heat dissipation technology, the Thermalright Peerless Assassin 120 Mini Black, while more expensive at $34.39, may be worth the investment.

