ARCTIC P12 Pro Reverse A-RGB – 3 Pack – vs Thermalright Assassin King 120 SE White ARGB CPU
Updated August 2026 — ARCTIC P12 Pro Reverse A-RGB – 3 Pack – wins on design and aesthetics, Thermalright Assassin King 120 SE White ARGB CPU wins on compatibility.
The ARCTIC P12 Pro offers superior airflow and aesthetics, while the Thermalright Assassin King provides solid performance at a lower price. Choose based on your specific needs.
Why ARCTIC P12 Pro Reverse A-RGB – 3 Pack – is better
Airflow
Higher RPM and static pressure for better cooling
Design
Reverse airflow design enhances aesthetics
Noise Control
Can stop completely at low PWM for silent operation
Why Thermalright Assassin King 120 SE White ARGB CPU is better
Price
More affordable option at $19.82
Compatibility
Supports multiple CPU sockets
Weight
Lighter design for easier installation
Overall score
Specifications
| Spec | ARCTIC P12 Pro Reverse A-RGB – 3 Pack – | Thermalright Assassin King 120 SE White ARGB CPU |
|---|---|---|
| Airflow | High static pressure | 66.17 CFM |
| Bearing Type | Fluid Dynamic | S-FDB |
| RGB Lighting | Yes | Yes |
| PWM Control | Yes | Yes |
| Socket Support | Various cases | Intel/AMD |
Dimension comparison
Overview of the ARCTIC P12 Pro Reverse A-RGB and Thermalright Assassin King 120 SE White ARGB CPU Air Cooler
The ARCTIC P12 Pro Reverse A-RGB is priced at $28.99, while the Thermalright Assassin King 120 SE White ARGB CPU Air Cooler is about 31% cheaper at $19.82. Both products are designed to enhance cooling performance in PCs, but they target slightly different needs within that space. The P12 Pro focuses on airflow with a unique reverse design, making it ideal for aesthetics in glass-fronted builds, while the Assassin King emphasizes versatile cooling for various CPU sockets.
Design and Aesthetics
The ARCTIC P12 Pro features a sleek, black design with reverse airflow technology, making it particularly appealing for users with glass-fronted PC cases. This design allows it to draw air from the back side, which can enhance the visual appeal of a build. In contrast, the Thermalright Assassin King 120 SE White incorporates a classic CPU cooler layout with five heat pipes and a pristine white finish that fits well in a variety of setups. While both coolers boast RGB lighting, the P12 Pro’s design is more specialized for visual impact, whereas the Assassin King offers a more traditional approach.
Cooling Performance
Cooling performance is a crucial factor for any CPU cooler, and both the ARCTIC P12 Pro and the Thermalright Assassin King deliver in their respective ways. The P12 Pro boasts a high static pressure and can operate at speeds up to 3000 RPM, making it efficient even under resistance. This is particularly useful for dense radiators and mesh structures. On the other hand, the Assassin King utilizes a PWM fan that maxes out at 1550 RPM but still manages to deliver an airflow of 66.17 CFM while maintaining a noise level of less than 25.6dB(A). While the P12 Pro has a higher RPM capability, the Assassin King's efficiency at lower speeds makes it a strong competitor.
Noise Levels
Noise levels are an essential consideration for many PC builders. The ARCTIC P12 Pro features a hydrodynamic bearing that minimizes noise, allowing for quiet operation during intensive tasks. The P12 Pro's ability to drop to a complete stop at less than 5% PWM is a significant advantage for users seeking silence. The Thermalright Assassin King, with its S-FDB (Self-Lubricating Fluid Dynamic Bearing) fan, also prioritizes quiet operation, with a noise level capped at 25.6 dB(A). Both coolers are designed to run quietly, but the P12 Pro has a slight edge in terms of speed control and potential silence at lower loads.
Installation and Compatibility
Both coolers are designed for easy installation, but they come with different compatibility features. The ARCTIC P12 Pro is a fan designed to fit various cases, while the Thermalright Assassin King is a CPU cooler that supports multiple Intel and AMD socket types, including LGA1700, LGA1150, AM4, and more. The Assassin King also comes with metal fasteners to facilitate better installation. If you are looking for a versatile CPU cooler compatible with a range of platforms, the Assassin King may be more suitable, while the P12 Pro is a great option for enhancing airflow in specific case designs.
Price Comparison
The ARCTIC P12 Pro is priced at $28.99, while the Thermalright Assassin King 120 SE White is significantly more affordable at $19.82. This price difference of about $9.17 (approximately 31%) can be a deciding factor for budget-conscious users. While the P12 Pro offers advanced features like reverse airflow and higher RPM, the Assassin King provides essential cooling capabilities at a lower price point, making it an attractive option for users looking to save money without compromising on quality.
Brand Reputation
Both ARCTIC and Thermalright have established themselves as reputable brands in the computer cooling market. ARCTIC is known for its innovative designs and high-quality fans, while Thermalright has over 20 years of experience, focusing on research and development in computer accessories. Users may have personal preferences based on brand loyalty, but both brands deliver reliable and efficient products that can meet the demands of various PC builds.
Which should you buy?
Choosing between the ARCTIC P12 Pro Reverse A-RGB and the Thermalright Assassin King 120 SE White ARGB CPU Air Cooler ultimately depends on your specific needs. If you prioritize aesthetics and advanced airflow capabilities, the P12 Pro is an excellent choice. However, if you're looking for a reliable cooling solution at a lower price point, the Assassin King stands out as a solid option. With the P12 Pro costing approximately 31% more than the Assassin King, budget considerations may tip the scale for many users.

