Thermalright Assassin X 120R SE V2 CPU Air Cooler vs Thermalright Assassin King 120 SE ARGB CPU Air Cooler
Updated August 2026 — The Thermalright Assassin King 120 SE ARGB offers enhanced aesthetics and slightly better thermal performance, making it the preferred choice for those willing to spend a little more.
The Thermalright Assassin King 120 SE ARGB offers enhanced aesthetics and slightly better thermal performance, making it the preferred choice for those willing to spend a little more.
Why Thermalright Assassin X 120R SE V2 CPU Air Cooler is better
lower price
C$23.59 vs C$24.59
simpler design
no RGB lighting
lighter weight
standard design without additional features
Why Thermalright Assassin King 120 SE ARGB CPU Air Cooler is better
RGB lighting
adds visual appeal
more heat pipes
5 heat pipes vs 4
better installation
metal fasteners for improved durability
Overall score
Specifications
| Spec | Thermalright Assassin X 120R SE V2 CPU Air Cooler | Thermalright Assassin King 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Price | C$23.59 | C$24.59 |
| Noise Level | 25.6 dB(A) | 25.6 dB(A) |
| Airflow | 66.17 CFM | 66.17 CFM |
| Heat Pipes | 4 | 5 |
| Socket Support | LGA1150/1151/1155/1156/1200/1700/17XX, AM4/AM5 | 115X/1200/1700/17XX, AM4/AM5 |
Dimension comparison
Brand Overview
Both the Thermalright Assassin X 120R SE V2 CPU Air Cooler and the Thermalright Assassin King 120 SE ARGB CPU Air Cooler come from Thermalright, a reputable Taiwanese brand with over 20 years of experience in the computer accessory market. Thermalright has established a strong presence both domestically and internationally, focusing on the research and development of various cooling solutions. The brand is well-regarded for its efficient cooling systems, and both products reflect this legacy of quality and performance.
Design and Aesthetics
In terms of design, the Thermalright Assassin King 120 SE ARGB CPU Air Cooler stands out with its vibrant addressable RGB lighting, adding a visual flair that can enhance the aesthetics of any gaming build. In contrast, the Assassin X 120R SE V2 does not feature RGB lighting, making it a more understated choice. While both coolers have similar dimensions at 120mm in width, the King variant incorporates a more modern design with a sleek finish, further complemented by its ARGB functionality. However, both models are suitable for medium-sized computer cases, measuring 148mm in height.
Cooling Performance
When it comes to cooling performance, both coolers are equipped with PWM fans that operate at a maximum speed of 1550 RPM and offer an airflow of 66.17 CFM. They are designed to maintain low noise levels, with both units producing a maximum noise level of 25.6 dB(A). The Assassin King 120 SE ARGB features five heat pipes compared to the four heat pipes in the Assassin X 120R SE V2, which may provide slightly better thermal performance under load. However, both coolers are designed to effectively manage temperatures and cater to CPUs with varying TDP levels.
Build Quality
Both the Thermalright Assassin X 120R SE V2 and the Assassin King 120 SE ARGB CPU Coolers are built with high-quality materials. The Assassin X model features industrial-grade PBT + PC materials, while the King variant also utilises similar materials but enhances its durability with metal fasteners for better installation. Each cooler is designed to last up to 20,000 hours due to their S-FDB bearings, which contribute to their longevity. This emphasis on build quality ensures that both products can withstand the rigors of high-performance computing.
Compatibility
Compatibility is a strong point for both coolers, as they support a wide range of CPU sockets. The Thermalright Assassin X 120R SE V2 is compatible with Intel sockets LGA1150/1151/1155/1156/1200/1700/17XX and AMD sockets AM4/AM5. The Assassin King 120 SE ARGB supports Intel sockets 115X/1200/1700/17XX and AMD sockets AM4/AM5. Both coolers come with the necessary mounting plates and fasteners for easy installation, making them versatile options for users looking to upgrade their cooling solutions.
Pricing
The pricing of the Thermalright Assassin X 120R SE V2 is C$23.59, while the Assassin King 120 SE ARGB is priced slightly higher at C$24.59. The difference of C$1.00 may seem minimal, but it reflects the additional features offered by the King variant, such as its ARGB lighting and enhanced design. Both coolers provide excellent value for their price points, but potential buyers may want to consider whether the aesthetic appeal and slight performance upgrades of the King justify the additional cost.
Noise Levels
Noise levels are an essential consideration for any CPU cooler, especially for those who prioritise a quiet computing environment. Both the Thermalright Assassin X 120R SE V2 and the Assassin King 120 SE ARGB maintain a maximum noise level of 25.6 dB(A), which is relatively quiet and ensures a comfortable user experience during operation. This similarity in noise output means that users can choose either model without worrying about excessive sound, making both coolers suitable for quiet builds.
Which should you buy?
Ultimately, the choice between the Thermalright Assassin X 120R SE V2 and the Thermalright Assassin King 120 SE ARGB CPU Coolers comes down to personal preference and specific needs. If you are looking for a solid air cooler that provides excellent performance at a lower price point, the Assassin X 120R SE V2 is a reliable choice. However, if you desire a cooler with enhanced aesthetics and slightly improved thermal performance, the Assassin King 120 SE ARGB is worth the additional C$1.00 investment. Both models excel in their own right and are excellent additions to any PC build.
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