ARCTIC P12 Pro Reverse A-RGB – 3 Pack – vs Thermalright Peerless Assassin 120 Mini Black CPU
Updated August 2026 — ARCTIC P12 Pro Reverse A-RGB – 3 Pack – wins on aesthetics and design, Thermalright Peerless Assassin 120 Mini Black CPU wins on compatibility.
The ARCTIC P12 Pro offers higher speeds and RGB features, while the Thermalright Peerless Assassin excels in compatibility and heat dissipation.
Why ARCTIC P12 Pro Reverse A-RGB – 3 Pack – is better
Price
ARCTIC is $5.40 cheaper
Speed
ARCTIC fan speed reaches 3000 RPM
RGB Features
ARCTIC includes customizable RGB lighting
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
Compatibility
Thermalright supports more CPU sockets
Heat Dissipation
Thermalright uses 6 heat pipes for better cooling
Build Quality
Thermalright has a fully blackened body with antioxidant coating
Overall score
Specifications
| Spec | ARCTIC P12 Pro Reverse A-RGB – 3 Pack – | Thermalright Peerless Assassin 120 Mini Black CPU |
|---|---|---|
| Fan Type | PWM Fan | PWM Fan |
| RPM Range | 500-3000 | 1500 |
| RGB | Yes | No |
| Heat Pipes | 0 | 6 |
| Compatibility | Various | Intel/AMD |
Dimension comparison
Overview of the ARCTIC P12 Pro Reverse A-RGB and Thermalright Peerless Assassin 120 Mini Black
The ARCTIC P12 Pro Reverse A-RGB and the Thermalright Peerless Assassin 120 Mini Black are both aimed at PC enthusiasts looking for efficient cooling solutions. The ARCTIC fan is priced at $28.99, while the Thermalright cooler comes in at $34.39, making the ARCTIC about 17% cheaper. This price difference can be a significant factor for budget-conscious consumers.
Design and Build Quality
The ARCTIC P12 Pro features a unique reversed airflow design, making it ideal for glass-fronted PC cases where aesthetics are a priority. Its high static pressure capability allows it to push air through dense radiators and perforated panels effectively. On the other hand, the Thermalright Peerless Assassin boasts a fully blackened body with an antioxidant coating and CNC precision micro-engraved copper base. This cooler utilizes 6 heat pipes with AGHP technology, which enhances its heat dissipation capabilities. Both products showcase solid build quality, but their designs cater to different user preferences.
Performance and Cooling Efficiency
In terms of performance, the ARCTIC P12 Pro can operate at speeds varying from 500 to 3000 RPM, providing versatility for different cooling needs. This fan's ability to stop completely below 5% PWM also contributes to energy efficiency. Conversely, the Thermalright Peerless Assassin has a maximum fan speed of 1500 RPM, which, while lower, is still capable of delivering a respectable airflow of 66.87 CFM. Users looking for high-speed cooling will find the ARCTIC to be a more powerful option, especially in high-demand scenarios.
Noise Levels
Noise levels are crucial for many PC builders, especially those who value a quiet environment. The ARCTIC P12 Pro is designed to operate quietly due to its smooth-running fluid dynamic bearing (FDB), minimizing noise during operation. While specific decibel ratings aren't provided for the ARCTIC, its construction hints at a quieter performance. The Thermalright Peerless Assassin, with a noise level of about 25.6 dB(A), is also relatively quiet but may not match the near-silent operation of the ARCTIC fan at higher speeds. Thus, the ARCTIC may have an edge in noise performance.
Compatibility
Compatibility is vital for ensuring a seamless installation process. The ARCTIC P12 Pro is a PWM fan designed to fit a variety of setups, making it versatile for different builds. In contrast, the Thermalright Peerless Assassin supports an extensive range of CPU socket types, including Intel's LGA series and AMD's AM4/AM5. This broad compatibility makes the Thermalright cooler a more flexible choice for users with specific motherboard configurations, especially when upgrading or building a new system.
Aesthetics and RGB Features
Aesthetic appeal is an important consideration for many builds, particularly those showcasing internal components. The ARCTIC P12 Pro features 5V digital RGB lighting, allowing for customization of lighting effects to match other components. This RGB capability can enhance the overall look of a gaming setup. In contrast, the Thermalright Peerless Assassin opts for a more subdued black finish without RGB, catering to users who prefer a classic and minimalist style. Ultimately, the choice between them may come down to personal aesthetic preference.
Brand Reputation and Support
Both brands have established their reputations in the cooling market. ARCTIC is known for its focus on affordable yet effective cooling solutions, while Thermalright has over 20 years of experience in the industry, emphasizing innovation in their designs. This experience may suggest a level of reliability and support, which can be crucial for consumers. While neither product currently has a bestseller rank indicated, both brands have loyal followings and positive user feedback.
Which should you buy?
Choosing between the ARCTIC P12 Pro Reverse A-RGB and the Thermalright Peerless Assassin 120 Mini Black ultimately depends on your specific needs. If you prioritize higher fan speeds, RGB lighting, and a more affordable price point, the ARCTIC P12 Pro is the better choice. However, if you require a CPU cooler with extensive compatibility across various sockets and a robust heat dissipation system, the Thermalright Peerless Assassin is worth the extra investment. Consider your cooling requirements, aesthetic preferences, and budget when making your decision.

