Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan vs Thermalright Peerless Assassin 140 Black CPU Cooler
Updated August 2026 — The Thermalright Peerless Assassin 140 offers superior cooling performance, while the TL-S12W X3 is a budget-friendly option. Choose based on your cooling needs and budget.
The Thermalright Peerless Assassin 140 offers superior cooling performance, while the TL-S12W X3 is a budget-friendly option. Choose based on your cooling needs and budget.
Why Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan is better
price
TL-S12W X3 is significantly cheaper at C$19.59
noise level
TL-S12W X3 operates at a quieter 23.2 dBA
installation ease
TL-S12W X3 includes three fans and mounting screws
Why Thermalright Peerless Assassin 140 Black CPU Cooler is better
airflow
Peerless Assassin 140 has higher airflow at 66.17 CFM
heat dissipation
Peerless Assassin 140 features dual fans and heat pipes
compatibility
Peerless Assassin 140 supports more CPU sockets
Overall score
Specifications
| Spec | Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan | Thermalright Peerless Assassin 140 Black CPU Cooler |
|---|---|---|
| Max RPM | 1500 | 1500 |
| Price | C$19.59 | C$54.90 |
| Material | PBT+PC | Aluminium/Copper |
| Fan Count | 3 | 2 |
| Power Connector | 4pin PWM | 4pin PWM |
Dimension comparison
Overview of the Thermalright TL-S12W X3 CPU Fan
The Thermalright TL-S12W X3 CPU Fan is a versatile product priced at C$19.59, making it an affordable option for those looking to enhance their computer cooling system. This fan features a 120mm size and operates with a maximum speed of 1500 RPM, ensuring efficient airflow of 47.6 CFM while maintaining a noise level of only 23.2 dBA. As a product of Thermalright, a brand with over 20 years of experience in computer accessories, the TL-S12W X3 is designed for both case and CPU cooling, providing a comprehensive solution for temperature management.
Overview of the Thermalright Peerless Assassin 140 Black CPU Cooler
In contrast, the Thermalright Peerless Assassin 140 Black CPU Cooler is a more advanced cooling solution, retailing for C$54.90. This CPU cooler employs a twin-tower design with dual fans, which allows for superior heat dissipation. It operates at a similar maximum fan speed of 1500 RPM but offers an impressive airflow of 66.17 CFM. The Peerless Assassin is designed to be compatible with a wide range of CPU sockets, making it a versatile choice for gamers and PC builders looking for effective cooling performance.
Cooling Performance
When comparing cooling performance, the Peerless Assassin 140 stands out with its dual fans and higher airflow capacity of 66.17 CFM compared to the TL-S12W X3’s 47.6 CFM. This additional airflow can significantly enhance heat dissipation, especially for high-performance CPUs under load. The Peerless Assassin’s design features a pure copper base and six heat pipes that work together to disperse heat efficiently, which is crucial for maintaining optimal CPU temperatures during intensive tasks or gaming sessions.
Noise Levels
Despite their differences in airflow, both cooling solutions maintain relatively low noise levels. The TL-S12W X3 operates at a maximum noise level of 23.2 dBA, making it an excellent choice for users prioritizing quiet operation. On the other hand, the Peerless Assassin has a slightly higher noise specification of 25.6 dBA due to its dual fan setup. While both fans offer quiet performance, the TL-S12W X3 may appeal more to those sensitive to noise in their computing environment.
Installation and Compatibility
Installation is an essential consideration for any cooling solution. The TL-S12W X3 comes with three fans, twelve mounting screws, and an instruction manual, providing everything needed for a straightforward installation. Its 120mm size allows it to fit in most cases without issues. In comparison, the Peerless Assassin 140 is designed to accommodate various CPU sockets, including Intel's LGA1700 and AMD's AM5, and includes an all-metal fastener system for easier installation. However, its larger size—158mm in height—may limit compatibility with smaller cases.
Build Quality and Design
Both products reflect Thermalright's commitment to quality and innovation. The TL-S12W X3 features an insulation-grade PBT+PC material with soft silicone feet for added noise reduction. This design enhances durability while also minimising vibrations. The Peerless Assassin boasts a robust twin-tower structure with high-performance dual fans, featuring a sleek and modern aesthetic. Its copper heat pipes and aluminium fins are designed for maximum cooling efficiency, making it not only functional but visually appealing as well.
Price Comparison
When it comes to price, the TL-S12W X3 is significantly more budget-friendly at C$19.59 for three fans, while the Peerless Assassin 140 is priced at C$54.90. This price difference reflects the additional features and cooling capabilities of the Peerless Assassin. For users with budget constraints or those who need a basic cooling solution, the TL-S12W X3 offers excellent value. However, for those seeking advanced cooling performance for high-performance CPUs, the investment in the Peerless Assassin may be justified.
Which should you buy?
Choosing between the Thermalright TL-S12W X3 CPU Fan and the Thermalright Peerless Assassin 140 Black CPU Cooler ultimately depends on your specific cooling needs and budget. If you are looking for an economical and quiet fan solution for general use, the TL-S12W X3 at C$19.59 is a solid choice. However, if you require superior cooling performance, especially for high-end CPUs, the Peerless Assassin 140 at C$54.90 offers advanced features and better heat dissipation capabilities. Your decision should weigh the importance of budget versus the need for enhanced cooling efficiency.
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