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ARCTIC P12 Pro Reverse A-RGB – 3 Pack – vs Thermalright Peerless Assassin 120 SE V3 CPU Air

Updated August 2026 — ARCTIC P12 Pro Reverse A-RGB – 3 Pack – wins on design, Thermalright Peerless Assassin 120 SE V3 CPU Air wins on compatibility and cooling.

The ARCTIC P12 Pro offers excellent aesthetics and quiet operation, while the Thermalright Peerless Assassin excels in cooling performance. Choose based on your priorities.

Why ARCTIC P12 Pro Reverse A-RGB – 3 Pack – is better

Price

ARCTIC P12 Pro is cheaper at $28.99

Aesthetics

ARCTIC features RGB lighting

Noise Levels

ARCTIC operates quieter at low speeds

Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better

Cooling Performance

Thermalright has a dual-tower design

Heat Dissipation

Thermalright uses six heat pipes

Fan Speed

Thermalright fans reach 2000 RPM

Overall score

ARCTIC P12 Pro Reverse A-RGB – 3 Pack –
78
Thermalright Peerless Assassin 120 SE V3 CPU Air
85

Specifications

SpecARCTIC P12 Pro Reverse A-RGB – 3 Pack –Thermalright Peerless Assassin 120 SE V3 CPU Air
Airflow62 CFM70.84 CFM
Noise Level≤25 dB(A)≤29.8 dB(A)
Heat Pipes06
PWM ControlYesYes
CompatibilityFan onlyIntel/AMD

Dimension comparison

ARCTIC P12 Pro Reverse A-RGB – 3 Pack –Thermalright Peerless Assassin 120 SE V3 CPU Air

Overview of the ARCTIC P12 Pro Reverse A-RGB

The ARCTIC P12 Pro Reverse A-RGB is a premium fan option designed for optimal cooling performance while enhancing your PC’s aesthetics. Priced at $28.99, it offers a unique reverse airflow design, making it an ideal choice for glass-fronted PC cases. This fan operates within a speed range of 500 to 3000 RPM, allowing it to adjust effectively to cooling demands. The self-lubricating hydrodynamic bearing ensures quiet operation, making it a solid pick for those prioritizing low noise levels in their builds.

Overview of the Thermalright Peerless Assassin 120 SE V3

The Thermalright Peerless Assassin 120 SE V3 is a robust CPU air cooler priced at $35.90, featuring a double tower design with dual fans. Equipped with six heat pipes, this cooler excels in heat dissipation, making it a strong contender for high-performance CPUs. The dual 120mm PWM fans can reach speeds of up to 2000 RPM, dynamically adjusting based on the motherboard's temperature. This capability ensures efficient cooling and reduced noise levels, solidifying its appeal for gamers and professionals alike.

Cooling Performance

When it comes to cooling performance, the Thermalright Peerless Assassin 120 SE V3 stands out with its dual-tower, dual-fan configuration. This design can significantly enhance heat dissipation, especially during intensive tasks. The six heat pipes ensure a high thermal transfer rate, providing a stable temperature for CPUs even under load. In contrast, the ARCTIC P12 Pro, with its single-fan design, while effective with a high static pressure of 3000 RPM, may not match the extensive cooling capabilities of a dual-tower setup. Thus, for users with high-performance CPUs, the Peerless Assassin may provide a more reliable cooling solution.

Aesthetic Appeal

In terms of aesthetics, the ARCTIC P12 Pro Reverse A-RGB takes the lead with its unique reverse airflow design and integrated 5V Digital RGB lighting. This feature not only enhances the visual appeal of your PC setup but also allows for a customizable lighting experience. The sleek black design complements various builds, particularly when showcasing interior components. While the Thermalright Peerless Assassin also offers an attractive aluminum heatsink cover, it lacks the RGB lighting that many enthusiasts seek, making the ARCTIC fan a better choice for users focused on visual aesthetics.

Noise Levels

Both the ARCTIC P12 Pro and the Thermalright Peerless Assassin are designed with noise reduction in mind. The ARCTIC fan operates quietly thanks to its hydrodynamic bearing, which minimizes noise during operation. It can even stop completely at less than 5% PWM, making it nearly silent at low speeds. The Peerless Assassin's dual fans, operating at a maximum of 2000 RPM with an operating noise level of ≤29.8 dB(A), are also designed to maintain a quiet environment. However, the ARCTIC fan may have an edge in noise levels due to its ability to operate at lower RPMs more effectively.

Installation and Compatibility

The installation process for both products is straightforward but has some differences. The ARCTIC P12 Pro is a fan and can be easily integrated into existing cooling solutions or radiators. Meanwhile, the Thermalright Peerless Assassin comes with mounting accessories for compatibility with various CPU sockets, including Intel LGA and AMD AM4/AM5. This flexibility makes it a versatile choice for a broader range of systems. However, users must ensure they have the original backplate for AMD installations, which could complicate the setup process slightly compared to the simpler fan installation of the ARCTIC P12 Pro.

Price Comparison

Pricing plays a significant role in the decision-making process for many consumers. The ARCTIC P12 Pro is priced at $28.99, making it about 19% cheaper than the Thermalright Peerless Assassin at $35.90. For users who are looking for a cost-effective cooling solution without compromising too much on performance, the ARCTIC fan represents a more budget-friendly option. In contrast, those willing to invest a little more for enhanced cooling capabilities and features may find the Thermalright cooler worth the additional expense.

Which should you buy?

Deciding between the ARCTIC P12 Pro Reverse A-RGB and the Thermalright Peerless Assassin 120 SE V3 ultimately depends on your specific needs and budget. If you are looking for an aesthetically pleasing fan that offers quiet operation and flexibility in airflow design, the ARCTIC fan is an excellent choice. However, for users focused on superior cooling performance, especially with high-end CPUs, the Thermalright cooler's dual-tower design and enhanced heat dissipation may justify the higher price. Consider your system requirements, aesthetic preferences, and budget before making a final decision.