Thermalright Assassin King 120 SE White ARGB CPU vs Thermalright TL-C12C X3 CPU Fan
Updated August 2026 — Thermalright Assassin King 120 SE White ARGB CPU leads on length and height.
The Thermalright Assassin King 120 SE offers superior cooling performance and aesthetic features, making it the better choice for dedicated CPU cooling. The TL-C12C X3 is a budget-friendly option suitable for case ventilation.
Why Thermalright Assassin King 120 SE White ARGB CPU is better
Cooling Performance
Assassin King is designed specifically for CPU cooling with five heat pipes.
Aesthetic Features
Assassin King includes dynamic ARGB lighting.
Durability
Assassin King has a lifespan of up to 20,000 hours.
Why Thermalright TL-C12C X3 CPU Fan is better
Price
TL-C12C X3 is more budget-friendly at $11.99.
Versatility
TL-C12C X3 can be used as both a case fan and a CPU cooler.
Noise Level
Both fans operate at a similar noise level, but TL-C12C X3 is designed for low noise.
Overall score
Specifications
| Spec | Thermalright Assassin King 120 SE White ARGB CPU | Thermalright TL-C12C X3 CPU Fan |
|---|---|---|
| Max RPM | 1550 | 1550 |
| Airflow (CFM) | 66.17 | 66.17 |
| Noise Level (dB) | 25.6 | 25.6 |
| Socket Compatibility | Intel/AMD | N/A |
| Lifespan (hrs) | 20000 | N/A |
Dimension comparison
Overview of Thermalright Assassin King 120 SE White ARGB CPU Air Cooler
The Thermalright Assassin King 120 SE White ARGB CPU Air Cooler is a premium cooling solution priced at $19.82. This CPU cooler features five heat pipes and a PWM quiet fan designed for efficient cooling and low noise levels. The ARGB lighting adds aesthetic appeal, making it suitable for those who value both performance and design in their builds.
This cooler is compatible with multiple CPU sockets, including Intel’s LGA1700 and AMD’s AM4. Its dimensions of 120(L)x73(W)x148(H)mm ensure it fits well in medium-sized cases, making it a versatile choice for various setups. The long service life of up to 20,000 hours also emphasizes its durability.
Overview of Thermalright TL-C12C X3 CPU Fan
The Thermalright TL-C12C X3 CPU Fan is a budget-friendly option priced at $11.99, making it about 17% cheaper than the Assassin King cooler. This fan is designed to deliver high performance with a maximum speed of 1550 RPM, providing efficient cooling for both cases and CPU coolers. It boasts an airflow of 66.17 CFM, similar to the Assassin King, ensuring that it can effectively cool various components.
Equipped with S-FDB bearings, this fan minimizes noise while maximizing cooling performance, with a noise level of 25.6 dB(A). Its design also includes silicone corner pads to reduce vibrations, further promoting a quieter operation, which is ideal for users seeking a silent computing environment.
Cooling Performance Comparison
In terms of cooling performance, both the Thermalright Assassin King 120 SE and the TL-C12C X3 fan excel, but they serve different purposes. The Assassin King is engineered as a dedicated CPU cooler, utilizing five heat pipes to enhance thermal conductivity and stability under load. Its fan operates at a speed of 1550 RPM, offering a maximum airflow of 66.17 CFM, which is sufficient for most CPU cooling needs.
On the other hand, the TL-C12C X3 fan, while capable of achieving the same RPM and airflow, is primarily a case fan. It can be used in tandem with a CPU cooler to enhance overall cooling efficiency. Thus, while both products are effective, the Assassin King is specifically tailored for CPU cooling, whereas the TL-C12C X3 is more versatile for overall case ventilation.
Noise Levels and Operation
When it comes to noise levels, both the Thermalright Assassin King 120 SE and the TL-C12C X3 are designed to operate quietly. The Assassin King has a noise level of up to 25.6 dB(A), ensuring that it remains unobtrusive during operation. This makes it suitable for gaming rigs or workstations where silence is valued.
The TL-C12C X3 also maintains a similar noise level of 25.6 dB(A), attributed to its S-FDB bearings and vibration-dampening design. This means that users can expect a tranquil computing experience regardless of the fan they choose. However, the Assassin King may have a slight edge in thermal performance, potentially requiring less fan speed under load, thus leading to quieter operation during heavy tasks.
Installation and Compatibility
Both the Thermalright Assassin King 120 SE and the TL-C12C X3 are designed with user-friendly installation in mind. The Assassin King comes with metal fasteners compatible with various Intel and AMD sockets, including LGA1700 and AM4, ensuring a hassle-free setup for most users. Its dimensions allow it to fit comfortably in medium-sized cases without obstruction.
In contrast, the TL-C12C X3 is also easy to install and can be used in various configurations—whether as a case fan or in conjunction with a CPU cooler. This flexibility makes it an excellent choice for building custom systems. However, users should ensure that their cases have adequate room to accommodate additional fans if they plan to use multiple units.
Durability and Lifespan
Durability is a critical factor when selecting cooling solutions. The Thermalright Assassin King 120 SE boasts a lifespan of up to 20,000 hours, which is indicative of its robust construction and quality materials. This longevity is essential for users looking for a reliable cooling solution that won't require frequent replacements.
The TL-C12C X3, while also built to last, does not specify a lifespan in the same way. However, its quality S-FDB bearings are designed to minimize wear over time, extending its operational life. Users can expect both products to deliver reliable cooling, but the Assassin King offers a more definitive assurance of longevity.
Aesthetic Appeal
Aesthetic considerations can play a significant role in choosing cooling products, especially for those who build RGB-lit systems. The Thermalright Assassin King 120 SE features dynamic ARGB lighting effects, allowing users to customize the look of their builds to match their style. This feature can enhance the visual appeal of a gaming setup or workstation.
In comparison, the TL-C12C X3 is more utilitarian in design, focusing on performance rather than visual flair. While it does not offer RGB lighting, its sleek design and color scheme can still complement various builds. Users prioritizing aesthetics may prefer the Assassin King, while those prioritizing performance might lean towards the TL-C12C X3.
Which should you buy?
When deciding between the Thermalright Assassin King 120 SE White ARGB CPU Air Cooler and the TL-C12C X3 CPU Fan, the choice ultimately hinges on your specific needs. If you require a dedicated CPU cooler with superior thermal performance, aesthetic features, and long-lasting reliability, the Assassin King at $19.82 is the better option. Conversely, if you are looking for a budget-friendly cooling solution that can serve as a versatile case fan or complement an existing cooler, the TL-C12C X3 at $11.99 is an excellent choice. Each product has its strengths, making them suitable for different types of users and setups.

