ARCTIC P12 Pro Reverse A-RGB – 3 Pack – vs Thermalright Peerless Assassin 120 SE CPU Cooler,
Updated August 2026 — ARCTIC P12 Pro Reverse A-RGB – 3 Pack – wins on design and aesthetics, Thermalright Peerless Assassin 120 SE CPU Cooler, wins on compatibility.
The ARCTIC P12 Pro offers excellent value and aesthetics, while the Thermalright Peerless Assassin excels in CPU cooling performance. Choose based on your specific needs.
Why ARCTIC P12 Pro Reverse A-RGB – 3 Pack – is better
Price
ARCTIC P12 Pro is 42% cheaper
Aesthetics
ARCTIC features customizable RGB lighting
Noise Levels
ARCTIC operates quieter at lower RPMs
Why Thermalright Peerless Assassin 120 SE CPU Cooler, is better
Cooling Performance
Thermalright handles high thermal loads effectively
Build Quality
Thermalright has a sturdy dual-tower design
Compatibility
Thermalright supports a wider range of CPU sockets
Overall score
Specifications
| Spec | ARCTIC P12 Pro Reverse A-RGB – 3 Pack – | Thermalright Peerless Assassin 120 SE CPU Cooler, |
|---|---|---|
| RPM Range | 500-3000 | 1550 |
| Static Pressure | High | Moderate |
| Noise Level | ≤25 dB(A) | ≤25.6 dB(A) |
| RGB Lighting | Yes | No |
| Heat Pipes | 0 | 6 |
Dimension comparison
Overview of Products
The ARCTIC P12 Pro Reverse A-RGB is priced at $28.99, while the Thermalright Peerless Assassin 120 SE CPU Cooler costs $49.99, making the ARCTIC model about 42% cheaper. Each product serves a different purpose in cooling solutions; the ARCTIC P12 Pro focuses on case ventilation, while the Thermalright Peerless Assassin is designed for CPU cooling. This article will delve into the features, performance, and suitability of each product to help you decide which is better for your needs.
Design and Aesthetics
The ARCTIC P12 Pro Reverse A-RGB features a unique reverse airflow design, drawing air in from the back, making it ideal for aesthetically pleasing setups, especially with glass fronted cases. Its 5V Digital RGB lighting adds a vibrant touch, allowing users to customize their builds visually. In contrast, the Thermalright Peerless Assassin 120 SE, while less visually striking, is a dual-tower cooler designed with functionality in mind. Its sturdy construction and aluminum heat sink offer a practical solution for heavy-duty cooling. The aesthetic appeal may lean towards the ARCTIC model, but the Thermalright cooler prioritizes performance over looks.
Cooling Performance
The ARCTIC P12 Pro operates at a remarkable speed range of 500 to 3000 RPM, providing high static pressure that efficiently penetrates dense radiators and mesh structures, ensuring reliable cooling. This capability is vital for high-performance gaming setups or overclocked systems. On the other hand, the Thermalright Peerless Assassin features dual 120mm PWM fans with a maximum speed of 1550 RPM, delivering effective cooling through its 6 heat pipes. While the ARCTIC fan offers a broader speed range, the Thermalright's design with AGHP technology and dual fans can handle significant CPU cooling tasks, making both suitable depending on the use case.
Noise Levels
Noise is a critical factor for many PC builders. The ARCTIC P12 Pro emphasizes quiet operation through its smooth-running fluid dynamic bearing, designed to minimize noise. This fan is ideal for users who prefer a silent environment, especially in home office or gaming setups. In contrast, the Thermalright Peerless Assassin maintains a noise level of ≤25.6 dB(A), which is relatively quiet for a CPU cooler but may not match the near-silent operation of the ARCTIC fan at lower RPMs. If noise reduction is a priority, the ARCTIC P12 Pro’s design may be more appealing.
Installation and Compatibility
The ARCTIC P12 Pro is straightforward to install, thanks to its 4-pin PWM connection and Y cable splitter, which simplifies connecting multiple fans. It’s versatile and suitable for various setups, regardless of the case design. The Thermalright Peerless Assassin, however, comes with metal fasteners and is compatible with a wide range of CPU sockets, including Intel LGA and AMD AM4/AM5. Its installation may require checking for compatibility with your case size and motherboard, making it slightly more complex. If ease of installation is a key concern, the ARCTIC P12 Pro might be the better choice.
Brand Reputation
ARCTIC is known for its quality cooling solutions that cater to gamers and PC enthusiasts, while Thermalright has over 20 years of experience in the industry, focusing on research and development of computer accessories. Both brands have established themselves in the market, but Thermalright’s long-standing presence may appeal to users seeking proven reliability in CPU cooling. The ARCTIC P12 Pro, however, has gained popularity for its innovative design, particularly in the RGB fan market, making it a strong contender among fans.
Price Comparison
The ARCTIC P12 Pro is priced at $28.99 for a 3-pack, which is an excellent value considering its performance features. Conversely, the Thermalright Peerless Assassin 120 SE is priced at $49.99, which is about 42% higher than the ARCTIC fans. While the Thermalright cooler offers robust CPU cooling capabilities, the price difference could sway budget-conscious consumers towards the ARCTIC P12 Pro, especially if they need multiple fans for their system.
User Experience and Feedback
User feedback often highlights the ARCTIC P12 Pro's efficient cooling and low noise levels, making it a favorite among PC builders. Its RGB lighting is also well-received, enhancing the overall aesthetic of a build. Conversely, the Thermalright Peerless Assassin is praised for its exceptional cooling performance, particularly in overclocking scenarios, though some users note the slight complexity in installation. Ultimately, both products have their loyal user bases, but the ARCTIC P12 Pro may have an edge in user satisfaction for those valuing aesthetics and quiet operation.
Which should you buy?
Choosing between the ARCTIC P12 Pro Reverse A-RGB and the Thermalright Peerless Assassin 120 SE depends largely on your specific needs. If you require multiple case fans that offer excellent airflow and aesthetics at a lower price point, the ARCTIC P12 Pro is the clear winner, priced at $28.99. However, if you are looking for a robust CPU cooler that excels in performance and can handle high thermal loads, the Thermalright Peerless Assassin, despite its higher cost of $49.99, is a solid investment. Consider your priorities—whether they are budget, noise levels, or cooling efficiency—to make the best choice for your PC setup.

