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ARCTIC P12 Pro A-RGB - Powerful Premium Fan, vs Thermalright Assassin King 120 SE White ARGB CPU

Updated August 2026 — Thermalright Assassin King 120 SE White ARGB CPU leads on compatibility and noise level.

The Arctic P12 Pro A-RGB excels in fan performance and flexibility, while the Thermalright Assassin King 120 SE offers comprehensive CPU cooling. Choose based on your specific needs.

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

Price

The P12 Pro is cheaper at $13.49 compared to $19.82 for the Assassin King.

RPM

The P12 Pro has a higher maximum RPM of 3000.

Noise

The P12 Pro operates quieter at lower PWM levels.

Why Thermalright Assassin King 120 SE White ARGB CPU is better

Cooling

The Assassin King provides better overall CPU cooling performance.

Compatibility

The Assassin King supports multiple CPU sockets.

Airflow

The Assassin King has a higher airflow rating of 66.17 CFM.

Overall score

ARCTIC P12 Pro A-RGB - Powerful Premium Fan,
85
Thermalright Assassin King 120 SE White ARGB CPU
88

Specifications

SpecARCTIC P12 Pro A-RGB - Powerful Premium Fan,Thermalright Assassin King 120 SE White ARGB CPU
PWM ControlYesYes
Bearing TypeFluid DynamicS-FDB
ARGBYesYes
Socket SupportFan OnlyIntel/AMD
Max CFM6266.17

Dimension comparison

ARCTIC P12 Pro A-RGB - Powerful Premium Fan,Thermalright Assassin King 120 SE White ARGB CPU

Overview of the Arctic P12 Pro A-RGB

The Arctic P12 Pro A-RGB is a powerful 120 mm PWM fan priced at $13.49. It offers impressive performance metrics, including a speed range of 600 to 3000 RPM. This fan is designed to deliver high static pressure, making it effective in cooling scenarios with resistance, such as dense radiators and mesh panels. With its fluid dynamic bearing, the P12 Pro also promises minimal noise during operation, making it a solid choice for users looking for efficient cooling without the added sound.

Overview of the Thermalright Assassin King 120 SE

The Thermalright Assassin King 120 SE White ARGB CPU Air Cooler is priced at $19.82 and is built to provide robust cooling for various CPU sockets, including Intel and AMD platforms. It features five heat pipes and a PWM fan that operates at a maximum speed of 1550 RPM. The cooler's design emphasizes low noise levels and effective airflow, rated at 66.17 CFM, while maintaining a noise level of no more than 25.6 dB(A). This makes it suitable for users who prioritize both cooling efficiency and quiet operation.

Design and Build Quality

The Arctic P12 Pro A-RGB features a sleek white design, ideal for modern builds. Its 120 mm fan size fits standard cases, and the inclusion of a Y-cable splitter allows for easy installation and control. The fan's fluid dynamic bearing ensures longevity and a smooth operation, reducing vibrations significantly.

In contrast, the Thermalright Assassin King 120 SE also boasts a white aesthetic but adds a more complex structure with its five heat pipes. This cooler is designed to withstand different orientations, addressing gravity's effects on cooling performance. The overall build quality aims at providing durability and compatibility across various platforms, showcasing Thermalright’s focus on high-quality materials.

Performance Metrics

The Arctic P12 Pro A-RGB excels in airflow and static pressure, with its ability to reach a maximum of 3000 RPM, making it highly effective even under demanding conditions. The fan's ability to stop completely at PWM levels below 5% adds to its efficiency and adaptability in various cooling scenarios.

On the other hand, the Thermalright Assassin King 120 SE has a lower maximum fan speed of 1550 RPM. However, it compensates with a high airflow rate of 66.17 CFM and a noise level of 25.6 dB(A), ensuring it remains quiet while still providing substantial cooling. While the P12 Pro offers greater RPM flexibility, the Assassin King balances its performance with quieter operation.

Compatibility

The Arctic P12 Pro A-RGB features a standard 4-pin PWM connection, making it compatible with most motherboards. However, it is primarily a fan and does not directly cool CPUs like the Assassin King.

In comparison, the Thermalright Assassin King 120 SE supports various CPU sockets, including Intel's LGA1700 and AMD's AM4. Its versatility makes it ideal for users building or upgrading systems across different platforms. This compatibility extends its usability significantly compared to the P12 Pro, which is limited to fan applications.

Price Comparison

The Arctic P12 Pro A-RGB is priced at $13.49, making it about 17% cheaper than the Thermalright Assassin King 120 SE, which retails for $19.82. This price difference may appeal to budget-conscious consumers looking for effective cooling solutions without breaking the bank.

While both products offer value for their respective purposes, the Assassin King’s higher price point reflects its dual functionality as both a fan and a cooler, which could justify the investment for users needing CPU cooling solutions.

Customer Experience and Feedback

While specific sales ranks and customer reviews are not provided, the reputation of both brands can be assessed. Arctic is known for its high-performance cooling solutions, particularly in the fan category, and the P12 Pro is no exception. Users appreciate its efficiency and quiet operation.

Thermalright, with over 20 years of industry presence, has a solid reputation in the CPU cooler market. The Assassin King is recognized for its balance of performance and aesthetics, with ARGB lighting appealing to gamers and PC builders focused on visual customization.

Which should you buy?

Choosing between the Arctic P12 Pro A-RGB and the Thermalright Assassin King 120 SE ultimately depends on your specific needs. If you are primarily looking for a high-performance fan that offers flexibility in speed and quiet operation, the P12 Pro at $13.49 presents an excellent choice. However, if you need a comprehensive CPU cooling solution that combines effective heat dissipation with compatibility across platforms, the Assassin King at $19.82 may be worth the extra investment. Each product excels in its domain, making them both strong contenders in the CPU cooler market.