Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan vs Thermalright Peerless Assassin 120 CPU Air Cooler
Updated August 2026 — The Thermalright Peerless Assassin 120 offers superior cooling performance and advanced features, making it the better choice for high-end CPUs, while the TL-S12W X3 is a budget-friendly option for general use.
The Thermalright Peerless Assassin 120 offers superior cooling performance and advanced features, making it the better choice for high-end CPUs, while the TL-S12W X3 is a budget-friendly option for general use.
Why Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan is better
affordability
TL-S12W X3 is priced at C$19.59
noise level
TL-S12W X3 operates at 23.2 dBA
ease of installation
TL-S12W X3 includes three fans and mounting screws
Why Thermalright Peerless Assassin 120 CPU Air Cooler is better
cooling performance
Peerless Assassin has a maximum airflow of 66.17 CFM
heat dissipation
Peerless Assassin has an effective cooling area of 9600 cm²
compatibility
Peerless Assassin supports multiple CPU socket types
Overall score
Specifications
| Spec | Thermalright TL-S12W X3 CPU Fan 120mm Case Cooler Fan | Thermalright Peerless Assassin 120 CPU Air Cooler |
|---|---|---|
| Brand | Thermalright | Thermalright |
| Max RPM | 1500 | 1500 |
| Connector | 4pin PWM | 4pin |
| Material | PBT+PC | Aluminum |
| Fan Count | 3 | 2 |
Dimension comparison
Overview of Thermalright TL-S12W X3 CPU Fan
The Thermalright TL-S12W X3 CPU Fan is an effective cooling solution priced at C$19.59. This 120mm case cooler fan is designed for versatility, functioning not only as a case fan but also enhancing the cooling performance of CPU coolers. It features automatic speed control through a 4PIN PWM fan cable interface, allowing it to adapt its speed based on the motherboard's temperature, with a maximum speed of 1500 RPM.
Thermalright is a reputable brand with over 20 years of experience in developing computer accessories. The TL-S12W X3 is built with a focus on silent operation, boasting a noise level of just 23.2 dBA. This model also includes 3 fans in one package, making it a cost-effective option for users looking to improve airflow in their systems.
Overview of Thermalright Peerless Assassin 120 CPU Air Cooler
The Thermalright Peerless Assassin 120 CPU Air Cooler is a more advanced cooling product, priced at C$51.39. It features a double tower design that optimizes heat dissipation, with an effective cooling area of 9600 cm². This cooler is particularly well-suited for high-performance CPUs, handling a thermal design power (TDP) of up to 245W.
Equipped with two PWM fans, this cooler offers a maximum airflow of 66.17 CFM and a noise level of 25.6 dBA. The Peerless Assassin's unique design includes 6 heat pipes that utilize advanced technology to mitigate gravity effects during operation, ensuring consistent cooling performance. Its compatibility with multiple CPU socket types makes it a versatile choice for various builds.
Cooling Performance Comparison
In terms of cooling performance, the Peerless Assassin 120 stands out with a maximum airflow of 66.17 CFM compared to the TL-S12W X3's 47.6 CFM. This significant difference in airflow suggests that the Peerless Assassin is more capable of dissipating heat, especially during intense CPU workloads. Additionally, the Peerless Assassin's double tower design and advanced heat pipe technology contribute to its superior heat management, making it ideal for high-performance gaming or workstation setups.
On the other hand, while the TL-S12W X3 offers sufficient airflow for general use and can enhance CPU cooler performance, it may not provide the same level of cooling efficiency under heavy loads. For users with standard computing needs, the TL-S12W X3 is adequate, but for those running high-powered CPUs, the Peerless Assassin is likely the better option.
Noise Levels Under Load
When it comes to noise levels, the TL-S12W X3 operates at a maximum of 23.2 dBA, making it a quieter choice for users who prioritize a silent computing experience. In contrast, the Peerless Assassin 120 reaches a noise level of 25.6 dBA under load. Although both products are designed to minimize noise, the TL-S12W X3's slightly lower decibel rating makes it preferable for users sensitive to sound.
This difference may not be significant for everyone, but for quiet office environments or home theatres, the TL-S12W X3 may provide the peace of mind some users seek. Nevertheless, the Peerless Assassin’s cooling performance could outweigh its slightly higher noise level for users focused on performance rather than silence.
Installation and Compatibility
Both the TL-S12W X3 and the Peerless Assassin 120 are designed for easy installation, but they cater to different needs. The TL-S12W X3 comes with three fans and all necessary mounting screws, making it straightforward for users to set up a multi-fan cooling system. Its versatility allows it to be used in various configurations, whether as case fans or as part of a dedicated CPU cooling setup.
The Peerless Assassin, on the other hand, includes metal fasteners compatible with a wide range of Intel and AMD sockets, ensuring easy installation on diverse CPU platforms. Its design allows for unrestricted installation near components such as RAM and graphics cards. While both products are user-friendly, the Peerless Assassin may require a bit more knowledge of CPU cooler installation due to its dual tower design.
Build Quality and Aesthetics
In terms of build quality, both products from Thermalright exhibit a high standard. The TL-S12W X3 is constructed with insulation-grade PBT+PC materials, enhancing durability while also incorporating soft silicone feet to reduce vibration and noise. This focus on material quality ensures longevity and effective performance over time.
The Peerless Assassin 120 features a visually appealing design with its electroplated finish and ARGB lighting effects, providing a modern aesthetic for users who value style in their builds. The quality of the aluminum heat sink and the strategic layout of the cooling towers add to its robust build, making it an eye-catching centerpiece in any gaming rig.
Pricing Comparison
When comparing prices, the TL-S12W X3 is significantly more affordable at C$19.59, making it an attractive option for budget-conscious users who still want quality cooling. The Peerless Assassin 120, priced at C$51.39, represents a higher investment, but it also offers more advanced features and superior cooling capabilities.
For users with limited budgets or those who do not require extensive cooling solutions, the TL-S12W X3 provides great value. However, for those seeking high-performance cooling for demanding applications, the additional cost of the Peerless Assassin 120 may be justified by its enhanced features and cooling efficiency.
Which should you buy?
Choosing between the Thermalright TL-S12W X3 CPU Fan and the Thermalright Peerless Assassin 120 CPU Air Cooler ultimately depends on your specific needs and budget. If you are looking for an economical fan solution with silent operation for general use, the TL-S12W X3 is an excellent choice at C$19.59. However, if you require superior cooling performance for high-end CPUs and are willing to invest more at C$51.39, the Peerless Assassin 120 offers enhanced airflow, advanced heat dissipation, and compatibility with various CPU sockets.
In summary, for high-performance computing and gaming, the Peerless Assassin is the clear winner, while the TL-S12W X3 excels in affordability and quiet operation for everyday tasks. Make your decision based on your cooling needs, budget, and the importance of noise levels in your setup.
versusfinder.com is a participant in the Amazon.ca Associates Program. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

