Thermalright Peerless Assassin 120 SE Black CPU Cooler vs Thermalright TL-S12RW X3 CPU Fan
Updated August 2026 — The Thermalright Peerless Assassin 120 SE Black CPU Cooler outperforms the TL-S12RW X3 CPU Fan in cooling efficiency and compatibility, making it the better choice for high-performance systems.
The Thermalright Peerless Assassin 120 SE Black CPU Cooler outperforms the TL-S12RW X3 CPU Fan in cooling efficiency and compatibility, making it the better choice for high-performance systems.
Why Thermalright Peerless Assassin 120 SE Black CPU Cooler is better
Cooling Performance
Peerless Assassin has a higher airflow of 66.17 CFM.
Compatibility
Supports a wider range of CPU sockets.
Design
Dual tower design enhances heat dissipation.
Why Thermalright TL-S12RW X3 CPU Fan is better
Price
TL-S12RW X3 is significantly cheaper at C$19.90.
Noise Level
Operates quieter at 23.2 dB(A).
Versatility
Can be used as both a case fan and CPU cooler.
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 SE Black CPU Cooler | Thermalright TL-S12RW X3 CPU Fan |
|---|---|---|
| Max Airflow | 66.17 CFM | 47.6 CFM |
| Max RPM | 1550 RPM | 1500 RPM |
| Noise Level | 25.6 dB(A) | 23.2 dB(A) |
| Price | C$46.79 | C$19.90 |
| Compatibility | LGA1150/1700 | General |
Dimension comparison
Overview
When it comes to CPU cooling solutions, selecting the right product can significantly impact your system's performance. In this comparison, we will evaluate the Thermalright Peerless Assassin 120 SE Black CPU Cooler against the Thermalright TL-S12RW X3 CPU Fan. The Peerless Assassin, priced at C$46.79, is designed as a dedicated CPU cooler, while the TL-S12RW X3, available for C$19.90, serves as a versatile fan suitable for both case and CPU cooling.
Design and Build Quality
The Thermalright Peerless Assassin 120 SE Black showcases a robust design with a dual tower configuration that enhances its heat dissipation capabilities. Its dimensions are 125mm in length, 135mm in width, and 155mm in height, allowing it to fit comfortably in most cases without interfering with memory clearance. The cooler features a blackened nano coating and fully electroplated heat pipes, making it not only functional but also visually appealing.
In contrast, the Thermalright TL-S12RW X3 focuses on aesthetics with a unique pure white design complemented by slim round ARGB lines. Its 120mm x 120mm x 25mm dimensions make it compact, and the inclusion of soft silicone feet aims to reduce noise. While the TL-S12RW X3 offers a stylish look, its design prioritizes versatility for various applications rather than the specialized cooling capabilities of the Peerless Assassin.
Cooling Performance
Cooling performance is critical in maintaining system stability, particularly during intense workloads. The Thermalright Peerless Assassin 120 SE Black excels in this area with its dual PWM fans that can reach a speed of 1550 RPM, providing a maximum airflow of 66.17 CFM while maintaining a noise level of 25.6 dB(A). This combination results in effective cooling, especially for high-performance CPUs.
The Thermalright TL-S12RW X3, while also capable, has a lower maximum airflow of 47.6 CFM generated at a speed of 1500 RPM. Its noise level is slightly quieter at 23.2 dB(A), but this comes at the cost of reduced airflow. Therefore, for those prioritizing maximum cooling efficiency, the Peerless Assassin clearly outperforms the TL-S12RW X3.
Compatibility and Installation
Compatibility is an essential consideration when selecting cooling solutions. The Thermalright Peerless Assassin 120 SE Black supports a wide range of CPU sockets, including Intel’s LGA1150 through LGA1851 and AMD’s AM4/AM5, making it a versatile choice for various systems. The cooler comes with metal fasteners for both Intel and AMD platforms, simplifying installation and ensuring a secure fit.
On the other hand, the Thermalright TL-S12RW X3 is designed to be compatible as both a case fan and a CPU cooler. While it can effectively complement a CPU cooler like the Peerless Assassin, it may not provide the same level of dedicated support for CPU mounting. This dual-purpose nature enhances its versatility but may not be as straightforward as the installation process for the Peerless Assassin.
Noise Levels
Noise generation is an important factor, especially for users seeking a quiet computing environment. The Thermalright Peerless Assassin 120 SE Black operates at a maximum noise level of 25.6 dB(A), which is relatively quiet for a dual-fan setup. This makes it suitable for gaming and workstation environments where noise can be distracting.
Conversely, the Thermalright TL-S12RW X3 operates at a lower noise level of 23.2 dB(A), making it quieter than the Peerless Assassin. This could make it a more appealing choice for users who prioritize silent operation, particularly when used as a case fan. However, it is essential to note that quieter operation often correlates with reduced airflow, which could impact overall cooling performance.
Price and Value
In terms of pricing, the Thermalright Peerless Assassin 120 SE Black is priced at C$46.79, while the Thermalright TL-S12RW X3 is significantly more affordable at C$19.90. While the Peerless Assassin offers superior cooling performance and compatibility with a broader range of CPUs, the TL-S12RW X3 presents a cost-effective option for users looking to enhance airflow in their cases or improve cooling on a budget.
Value is subjective and depends on individual needs. For those with high-performance CPUs or overclocking plans, the investment in the Peerless Assassin may be justified. However, for users needing a basic cooling solution or additional case fans, the TL-S12RW X3 provides excellent value.
Intended Use Cases
The intended use cases for these two products differ significantly. The Thermalright Peerless Assassin 120 SE Black is aimed at users seeking dedicated CPU cooling for high-performance systems. Its dual tower and dual fan design make it ideal for handling the heat generated by demanding CPUs.
In contrast, the Thermalright TL-S12RW X3 is more suited for general airflow enhancement within a case or as a supplementary fan for a CPU cooler. It can be effectively used to manage system temperatures in less demanding applications or to improve the overall cooling dynamics of a build without the specific focus on CPU cooling.
Which should you buy?
In conclusion, the decision between the Thermalright Peerless Assassin 120 SE Black CPU Cooler and the Thermalright TL-S12RW X3 CPU Fan boils down to your specific needs and budget. If you require robust cooling performance for a high-end CPU, the Peerless Assassin is the clear winner, offering superior airflow and compatibility options for a wider range of CPUs. However, if you're looking for an affordable fan that can enhance airflow and operate quietly in a general-purpose role, the TL-S12RW X3 is a commendable choice. Ultimately, your choice will depend on whether you prioritise dedicated CPU cooling or versatile case fan functionality.
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