Thermalright TL-S12RW X3 CPU Fan vs Thermalright Assassin King 120 SE ARGB CPU Air Cooler
Updated August 2026 — The Thermalright Assassin King 120 SE offers superior cooling performance and advanced features, making it the better choice for high-performance systems. However, the TL-S12RW X3 is a more budget-friendly option.
The Thermalright Assassin King 120 SE offers superior cooling performance and advanced features, making it the better choice for high-performance systems. However, the TL-S12RW X3 is a more budget-friendly option.
Why Thermalright TL-S12RW X3 CPU Fan is better
Lower Price
C$19.90 vs C$24.59
Quieter Operation
Noise level ≤ 23.2 dBA vs ≤ 25.6 dBA
Versatility
Can be used as both case and CPU fan
Why Thermalright Assassin King 120 SE ARGB CPU Air Cooler is better
Higher Airflow
66.17 CFM vs 47.6 CFM
Better Cooling
Designed specifically for CPU cooling
Longer Lifespan
Up to 20,000 hours vs standard lifespan
Overall score
Specifications
| Spec | Thermalright TL-S12RW X3 CPU Fan | Thermalright Assassin King 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Max RPM | 1500 | 1550 |
| Noise Level | ≤ 23.2 dBA | ≤ 25.6 dBA |
| Air Pressure | 1.31 mm H2O | N/A |
| Socket Support | N/A | Intel/AMD |
| Bearing Type | S-FDB V2 | S-FDB |
Dimension comparison
Design and Aesthetics
The design of the Thermalright TL-S12RW X3 CPU Fan is characterised by its unique shape and pure white aesthetic, while the Thermalright Assassin King 120 SE ARGB CPU Air Cooler boasts stunning ARGB light effects. The TL-S12RW X3 features slim round ARGB lines that enhance its visual appeal, making it a stylish addition to any setup. In contrast, the Assassin King 120 SE not only showcases its elegant look with a height of 148mm but also incorporates RGB lighting that adds a vibrant touch to your build. Both products reflect a modern design ethos, but if aesthetics is a priority, the ARGB features of the Assassin King may appeal more to RGB enthusiasts.
Performance and Cooling Efficiency
When it comes to cooling efficiency, the Thermalright Assassin King 120 SE outperforms the TL-S12RW X3 with a maximum airflow of 66.17 CFM compared to the TL-S12RW X3's 47.6 CFM. This notable difference means that the Assassin King can move more air, making it a superior option for cooling demanding CPU workloads. The TL-S12RW X3 operates at a speed of 1500 RPM with a noise level of ≤ 23.2 dBA, while the Assassin King reaches a slightly higher speed of 1550 RPM with a noise level of ≤ 25.6 dBA. The increased airflow and cooling capability of the Assassin King make it better suited for high-performance systems, especially when overclocking is involved.
Noise Levels
The Thermalright TL-S12RW X3 operates at a quieter noise level of ≤ 23.2 dBA, whereas the Thermalright Assassin King 120 SE has a slightly higher noise level of ≤ 25.6 dBA. This lower noise output makes the TL-S12RW X3 an excellent choice for users who prioritise silent operation in their builds. However, the noise difference is relatively minimal, and users may find the Assassin King's performance benefits justify the slight increase in noise. If a quiet computing experience is paramount, the TL-S12RW X3 has the edge; however, for those who can tolerate a bit more sound for enhanced cooling, the Assassin King remains a solid option.
Installation and Compatibility
Both the Thermalright TL-S12RW X3 and the Assassin King 120 SE are designed with user-friendly installation in mind. The TL-S12RW X3 is versatile, functioning well as both a case fan and a CPU cooler fan, while the Assassin King is specifically designed as a CPU air cooler. The Assassin King supports various CPU socket platforms, including Intel's 115X/1200/1700/17XX and AMD's AM4/AM5, ensuring compatibility with a wide range of systems. This factor makes the Assassin King a more comprehensive solution for users looking to upgrade their CPU cooling. In terms of installation, both products come equipped with necessary components, but the Assassin King's dedicated design simplifies CPU cooler installation.
Build Quality
The build quality of both Thermalright products reflects the brand's commitment to durability. The TL-S12RW X3 uses S-FDB V2 bearings, which minimise vibration and enhance longevity, while the Assassin King 120 SE incorporates industrial-grade materials such as aluminum and high-quality PBT + PC for its construction. The Assassin King also features 5×6mm heat pipes and an industrial service life of up to 20,000 hours, indicating a robust design suitable for long-term use. While both fans are built to last, the Assassin King's construction and heat management features provide an edge in terms of long-term reliability and performance under heavy loads.
Price Comparison
In terms of pricing, the Thermalright TL-S12RW X3 is currently available for C$19.90, making it a more budget-friendly option for those seeking effective cooling without a hefty investment. On the other hand, the Thermalright Assassin King 120 SE is priced at C$24.59, reflecting its enhanced features and capabilities. The price difference of C$4.69 may be justified by the superior performance and additional features of the Assassin King, particularly for users who require better cooling solutions for high-performance CPUs. Ultimately, the choice between the two may come down to budget constraints and performance needs.
Target Audience
The Thermalright TL-S12RW X3 is ideal for users looking for a reliable and cost-effective cooling solution that doesn't compromise on aesthetics. It's perfect for casual gamers or users with moderate computing needs who desire a functional and silent fan. In contrast, the Thermalright Assassin King 120 SE is designed for more demanding users, such as gamers and content creators, who require advanced cooling capabilities and are willing to invest a bit more for enhanced performance. If you’re building a system that will handle intensive tasks, the Assassin King is tailored for those requirements.
Which should you buy?
Choosing between the Thermalright TL-S12RW X3 and the Thermalright Assassin King 120 SE ultimately depends on your specific needs and budget. If affordability, quieter operation, and versatility as both a case and CPU fan are your priorities, the TL-S12RW X3 is the way to go. However, if you are seeking superior cooling performance, particularly for high-performance CPUs, and don't mind spending a bit more, the Assassin King 120 SE would be the better choice. Both products offer distinct advantages, but your decision should hinge on your cooling requirements and aesthetic preferences.
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