Thermalright Assassin X 120R SE V2 CPU Cooler, 4× vs Thermalright TL-C12C X3 CPU Fan
Updated August 2026 — Thermalright Assassin X 120R SE V2 CPU Cooler, 4× leads on installation and performance.
The Thermalright Assassin X 120R SE V2 is a superior choice for dedicated CPU cooling, while the TL-C12C X3 is an economical option for case ventilation.
Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better
Cooling Efficiency
Designed specifically for CPU cooling with heat pipes
Build Quality
Aluminum heat sink and copper base
Compatibility
Supports multiple CPU sockets for installation
Why Thermalright TL-C12C X3 CPU Fan is better
Price
Lower cost at $11.99
Versatility
Can be used as a case fan or with CPU coolers
Noise Level
Maintains low noise operation
Overall score
Specifications
| Spec | Thermalright Assassin X 120R SE V2 CPU Cooler, 4× | Thermalright TL-C12C X3 CPU Fan |
|---|---|---|
| Max RPM | 1550 | 1550 |
| Airflow | 66.17 CFM | 66.17 CFM |
| Noise Level | 25.6 dB(A) | 25.6 dB(A) |
| Socket Support | Intel/AMD | N/A |
| Bearing Type | S-FDB | S-FDB |
Dimension comparison
Overview of the Thermalright Assassin X 120R SE V2 and TL-C12C X3
The Thermalright Assassin X 120R SE V2 is a high-performance CPU cooler priced at $16.59, while the Thermalright TL-C12C X3 CPU fan is available for $11.99. Both products are crafted by Thermalright and cater to the cooling needs of PC enthusiasts. The Assassin X 120R focuses on CPU cooling efficiency, whereas the TL-C12C X3 is designed as a versatile case fan, offering compatibility with multiple components.
Cooling Performance
When it comes to cooling performance, the Thermalright Assassin X 120R SE V2 boasts four 6mm heat pipes and a fan speed of 1550 RPM, which ensures effective heat dissipation for your CPU. This cooler features a maximum airflow of 66.17 CFM, making it suitable for demanding gaming and workstation environments. In contrast, the TL-C12C X3 also reaches a maximum speed of 1550 RPM but is designed as a case cooler. While it shares the same airflow rating of 66.17 CFM, the TL-C12C X3 is optimized for case ventilation rather than direct CPU cooling.
Noise Levels
Noise levels are crucial for users seeking a quiet operation. The Thermalright Assassin X 120R SE V2 operates at a noise level of 25.6 dB(A), offering a quiet performance while maintaining cooling efficiency. Similarly, the TL-C12C X3 maintains the same noise level of 25.6 dB(A), ensuring that users can enjoy a peaceful computing experience. Both products utilize S-FDB bearings that minimize noise and vibration, enhancing their overall performance without compromising on sound levels.
Build Quality and Design
The build quality of the Thermalright Assassin X 120R SE V2 is notable, featuring an aluminum heat sink and a pure copper base that contributes to its robust performance. The cooler stands at a height of 148mm, making it compatible with most mid-sized cases. Meanwhile, the TL-C12C X3 is designed with a 120mm frame and incorporates soft silicone corner pads to reduce vibrations during operation. Though both products are constructed with quality materials, the Assassin X 120R’s design is specifically tailored for CPU cooling, while the TL-C12C X3 focuses on versatile case cooling.
Installation and Compatibility
Installation is straightforward for both coolers. The Thermalright Assassin X 120R SE V2 comes with mounting hardware for multiple CPU sockets, including Intel’s LGA 1150/1151/1200 and AMD’s AM4/AM5. This wide compatibility ensures that users can install it on various builds without hassle. The TL-C12C X3, on the other hand, is designed for use as a case fan but can also complement CPU coolers for enhanced airflow. This flexibility allows it to be installed in multiple positions within a computer case, making it a useful addition to any setup.
Price Comparison
In terms of pricing, the Thermalright Assassin X 120R SE V2 is available for $16.59, while the TL-C12C X3 is priced at $11.99. This means the Assassin X 120R SE V2 is approximately 38% more expensive than the TL-C12C X3. However, considering that the Assassin X 120R is a dedicated CPU cooler while the TL-C12C X3 serves as a case fan, the price difference reflects their different functionalities and intended uses.
Target Audience
The Thermalright Assassin X 120R SE V2 is aimed at gamers and PC builders who require a specialized solution for CPU cooling. Its superior design and performance make it an excellent choice for high-performance gaming rigs and workstations. In contrast, the TL-C12C X3 is suited for users looking to enhance their case cooling or who need additional airflow for their existing CPU coolers. Its lower price point makes it an attractive option for budget-conscious builds or for those who simply need extra cooling without breaking the bank.
Which should you buy?
Ultimately, the choice between the Thermalright Assassin X 120R SE V2 and the TL-C12C X3 comes down to your specific cooling needs. If you are building a high-performance system and need efficient CPU cooling, the Assassin X 120R SE V2 is worth the additional investment at $16.59. However, if you are looking for an economical solution for case cooling or want to enhance the airflow in your current setup, the TL-C12C X3 at $11.99 presents a compelling option. Each product excels in its category, ensuring that users can select the best fit for their individual requirements.

