Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan vs Thermalright Peerless Assassin 120 SE Black CPU Cooler
Updated August 2026 — The Thermalright Peerless Assassin 120 SE offers superior cooling performance and features, making it the better choice for high-performance CPUs, while the TL-S12W X3 is a budget-friendly option for case cooling.
The Thermalright Peerless Assassin 120 SE offers superior cooling performance and features, making it the better choice for high-performance CPUs, while the TL-S12W X3 is a budget-friendly option for case cooling.
Why Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan is better
lower price
C$19.59 vs C$46.79
quieter operation
23.2 dBA vs 25.6 dBA
versatile application
can be used as both case and CPU fan
Why Thermalright Peerless Assassin 120 SE Black CPU Cooler is better
better cooling
66.17 CFM vs 47.6 CFM
dual fans
two fans vs one fan
larger heat sink
125mm x 135mm x 155mm vs smaller dimensions
Overall score
Specifications
| Spec | Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan | Thermalright Peerless Assassin 120 SE Black CPU Cooler |
|---|---|---|
| Brand | Thermalright | Thermalright |
| Price | C$19.59 | C$46.79 |
| Max RPM | 1500 | 1550 |
| Air Pressure | 1.31 mm H2O | N/A |
| Fan Type | Single | Dual |
| Compatibility | Case Fan | CPU Cooler |
Dimension comparison
Overview of the Products
In the realm of CPU cooling solutions, the Thermalright TL-S12W X3 CPU Fan and the Thermalright Peerless Assassin 120 SE Black CPU Cooler stand out with distinct features tailored for different cooling needs. The TL-S12W X3 is an efficient case cooler fan priced at C$19.59, while the Peerless Assassin 120 SE, which costs C$46.79, offers a more robust CPU cooling solution with dual fans and a larger heat sink. Both products are manufactured by Thermalright, a brand known for its focus on computer accessories and cooling solutions.
Cooling Performance
When it comes to cooling performance, the Peerless Assassin 120 SE has a significant advantage due to its dual PWM fans and a more complex heat sink design. It can achieve a maximum airflow of 66.17 CFM, making it more effective at dissipating heat compared to the TL-S12W X3, which has an airflow of 47.6 CFM. The dual fans on the Peerless Assassin operate at a speed of 1550 RPM, compared to the TL-S12W X3's maximum speed of 1500 RPM. This translates to better cooling efficiency, particularly for high-performance CPUs that generate substantial heat during operation.
Noise Levels
Noise levels are a critical consideration when selecting a cooling solution. The TL-S12W X3 operates at a noise level of 23.2 dBA, which is relatively quiet for a fan, making it suitable for builds prioritizing silence. In contrast, the Peerless Assassin 120 SE has a slightly higher noise level of 25.6 dBA due to its dual fans. While both products are relatively quiet, users seeking ultra-silent operation may prefer the TL-S12W X3, especially in noise-sensitive environments.
Build Quality and Materials
Both the TL-S12W X3 and Peerless Assassin 120 SE are built with quality materials designed for durability and performance. The TL-S12W X3 features insulation-grade PBT and PC, which helps reduce noise through soft silicone feet. On the other hand, the Peerless Assassin employs a blackened nano coating and finely micro-carved copper for enhanced heat dissipation. While both products showcase excellent build quality, the Peerless Assassin's advanced materials contribute to its superior cooling performance.
Installation and Compatibility
Installation ease is crucial for users, and both products offer straightforward installation processes. The TL-S12W X3 comes with three fans, mounting screws, and an instruction manual, making it easy to set up as a case fan or in conjunction with CPU coolers. The Peerless Assassin 120 SE includes compatible mounting hardware for both Intel and AMD platforms, ensuring versatility across various systems. With dimensions of 125mm x 135mm x 155mm, the Peerless Assassin is designed to fit a broad range of cases, while the TL-S12W X3 is versatile as both a case and CPU fan.
Application Versatility
The TL-S12W X3 excels in versatility, functioning effectively as a case fan while also being suitable for use alongside a CPU cooler. This dual functionality allows for optimized airflow within a case, which can enhance overall cooling performance. Conversely, the Peerless Assassin 120 SE is specifically designed as a CPU cooler, providing powerful dual-fan cooling directly to the CPU itself. Users needing comprehensive cooling for high-performance CPUs will find the Peerless Assassin more fitting, while those looking for case fans will appreciate the TL-S12W X3's flexibility.
Price Comparison
Price is a significant factor when making a purchasing decision. The TL-S12W X3 is priced at C$19.59, making it an affordable option for users who require additional case cooling without breaking the bank. In contrast, the Peerless Assassin 120 SE is priced higher at C$46.79, reflecting its advanced cooling capabilities and dual fan system. While the higher price may deter some budget-conscious users, those with performance-oriented builds may find the investment worthwhile due to the enhanced cooling efficiency.
Which should you buy?
Choosing between the Thermalright TL-S12W X3 CPU Fan and the Thermalright Peerless Assassin 120 SE Black CPU Cooler ultimately depends on your specific cooling needs. If you're looking for a budget-friendly option for case cooling with a noise level of just 23.2 dBA, the TL-S12W X3 is an excellent choice. However, if you require a more robust solution for high-performance CPUs with superior cooling capabilities at a price of C$46.79, the Peerless Assassin 120 SE is worth the investment. Both products have their strengths, ensuring that you can find a suitable option for your cooling requirements.
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