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ARCTIC P12 Pro A-RGB - Powerful Premium Fan, vs Thermalright Peerless Assassin 120 SE V3 CPU Air

Updated August 2026 — ARCTIC P12 Pro A-RGB - Powerful Premium Fan, wins on noise level, Thermalright Peerless Assassin 120 SE V3 CPU Air wins on compatibility and cooling efficien.

The ARCTIC P12 Pro A-RGB offers excellent value as a high-performance fan, while the Thermalright Peerless Assassin excels in CPU cooling efficiency. Choose based on your specific needs.

Why ARCTIC P12 Pro A-RGB - Powerful Premium Fan, is better

Price

ARCTIC fan is significantly cheaper at $12.49

Noise

ARCTIC fan operates silently at low speeds

Aesthetics

ARCTIC fan features customizable RGB lighting

Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better

Cooling

Thermalright cooler has superior heat dissipation

Design

Thermalright features a robust dual-tower structure

Compatibility

Thermalright supports a wide range of CPU sockets

Overall score

ARCTIC P12 Pro A-RGB - Powerful Premium Fan,
75
Thermalright Peerless Assassin 120 SE V3 CPU Air
85

Specifications

SpecARCTIC P12 Pro A-RGB - Powerful Premium Fan,Thermalright Peerless Assassin 120 SE V3 CPU Air
Fan TypePWM FanCPU Cooler
Max RPM30002000
Air Volume50 CFM70.84 CFM
Noise Level20 dB(A)29.8 dB(A)
Heat Pipes06

Dimension comparison

ARCTIC P12 Pro A-RGB - Powerful Premium Fan,Thermalright Peerless Assassin 120 SE V3 CPU Air

Overview of the Products

The ARCTIC P12 Pro A-RGB fan is priced at $12.49, while the Thermalright Peerless Assassin 120 SE V3 CPU Air Cooler costs $35.90. This makes the ARCTIC fan about 65% cheaper than the Thermalright cooler. Both products are designed for cooling applications, but they serve different purposes and features.

The ARCTIC P12 Pro A-RGB is primarily a high-performance 120 mm PWM fan designed for efficient airflow, while the Thermalright Peerless Assassin is a CPU air cooler featuring a more complex structure with dual fans and multiple heat pipes. This difference in design and intended use highlights the distinct roles each product plays in a cooling setup.

Design and Build Quality

The ARCTIC P12 Pro A-RGB is designed with a focus on airflow and quiet operation, utilizing a fluid dynamic bearing for reduced noise. Its sleek black design complements various builds, while the new fan blade design optimizes performance and noise levels. The fan operates between 600 to 3000 RPM, ensuring flexibility for different cooling needs.

In contrast, the Thermalright Peerless Assassin boasts a robust construction with a double-tower design and six heat pipes for superior heat dissipation. The use of aluminum for the heatsink cover adds to its durability. It features dual PWM fans that can reach up to 2000 RPM, providing substantial airflow. This design is more complex but tailored specifically for CPU cooling.

Performance and Efficiency

The ARCTIC P12 Pro A-RGB fan is engineered for high static pressure, making it efficient even in restrictive environments. It can generate airflow that easily penetrates dense radiators and mesh structures, ensuring reliable cooling. The ability to completely stop at less than 5% PWM allows for silent operation when maximum cooling isn’t required.

Meanwhile, the Thermalright Peerless Assassin is designed for maximum heat dissipation. Its dual fans and advanced AGHP heat pipe technology ensure that it effectively manages CPU temperatures, even under heavy loads. With an air volume of 70.84 CFM and an operating noise level of just 29.8 dB(A), it balances performance and quiet operation effectively.

Compatibility

The ARCTIC P12 Pro A-RGB fan is versatile and can be used in various setups, fitting into any standard 120 mm fan slot. Its PWM control allows it to be easily integrated into systems with motherboard temperature control.

On the other hand, the Thermalright Peerless Assassin is compatible with a wide range of CPU sockets from both Intel and AMD, including the latest platforms like Intel LGA 1700 and AMD AM5. This broad compatibility makes it a great choice for users looking to upgrade their cooling systems without worrying about compatibility issues.

Installation Process

Installing the ARCTIC P12 Pro A-RGB is straightforward, thanks to its standard 4-pin PWM connector. This simplicity makes it easy for even novice PC builders to enhance their cooling without much hassle.

The Thermalright Peerless Assassin, while also designed for ease of installation, requires a few more steps due to its dual-tower structure and additional mounting accessories. Users must ensure they follow installation instructions carefully, especially when using it on AMD platforms, where the original motherboard backplate is necessary for proper mounting.

Noise Levels

The ARCTIC P12 Pro A-RGB is designed for quiet operation, thanks to its fluid dynamic bearing, which minimizes noise during use. It can operate silently at low speeds, making it an excellent choice for users who prioritize a quiet computing environment.

The Thermalright Peerless Assassin, while also relatively quiet, has a slightly higher noise level of up to 29.8 dB(A) at maximum fan speeds. This noise level is acceptable for most users but may be noticeable in extremely quiet environments. The PWM functionality helps in adjusting speeds according to CPU temperature, which can aid in reducing noise during lighter tasks.

Aesthetic Appeal

The ARCTIC P12 Pro A-RGB features 5V digital RGB lighting, allowing users to customize their build's aesthetics with vibrant colors. This feature is particularly appealing to gamers and PC enthusiasts who want their builds to stand out.

In comparison, the Thermalright Peerless Assassin has a more utilitarian design, focusing on functionality over aesthetics. While it does not feature RGB lighting, its design is sleek and professional, making it suitable for both gaming and workstation builds without drawing attention away from other components.

Which should you buy?

Choosing between the ARCTIC P12 Pro A-RGB and the Thermalright Peerless Assassin ultimately depends on your specific cooling needs. If you're looking for an affordable, high-performance fan that can be easily integrated into any build, the ARCTIC P12 Pro A-RGB is an excellent choice at just $12.49. However, if you require an effective CPU air cooler that can handle high temperatures with a sophisticated dual-tower design, the Thermalright Peerless Assassin at $35.90 offers superior cooling capabilities. Consider your priorities—price, performance, and compatibility—when making your decision.