Thermalright Assassin X 120R Digital ARGB Black CPU Cooler vs Thermalright Peerless Assassin 120 CPU Air Cooler
Updated August 2026 — The Thermalright Assassin X 120R offers better performance at a lower price, making it the more attractive option for budget-conscious users. However, the Peerless Assassin excels in noise levels and dual fan design.
The Thermalright Assassin X 120R offers better performance at a lower price, making it the more attractive option for budget-conscious users. However, the Peerless Assassin excels in noise levels and dual fan design.
Why Thermalright Assassin X 120R Digital ARGB Black CPU Cooler is better
price
Assassin X is significantly cheaper at C$32.90
airflow
Assassin X has higher airflow at 70.84 CFM
fan speed
Assassin X operates at a higher fan speed of 2000 RPM
Why Thermalright Peerless Assassin 120 CPU Air Cooler is better
noise level
Peerless Assassin is quieter at ≤ 25.6 dB(A)
dual fans
Peerless Assassin features two PWM fans for enhanced cooling
build design
Peerless Assassin has an offset asymmetric layout for easier installation
Overall score
Specifications
| Spec | Thermalright Assassin X 120R Digital ARGB Black CPU Cooler | Thermalright Peerless Assassin 120 CPU Air Cooler |
|---|---|---|
| Fan Speed | 2000 RPM | 1500 RPM |
| Airflow | 70.84 CFM | 66.17 CFM |
| Noise Level | ≤ 29.8 dB(A) | ≤ 25.6 dB(A) |
| Compatibility | Intel LGA 1851/1700, AMD AM4/AM5 | Intel LGA 1150-2066, AMD AM4/AM5 |
| Lighting | ARGB with digital screen | ARGB with LED design |
Dimension comparison
Overview
The Thermalright Assassin X 120R Digital ARGB Black CPU Cooler and the Thermalright Peerless Assassin 120 CPU Air Cooler are both robust cooling solutions from Thermalright, designed to enhance CPU performance. The Assassin X is priced at C$32.90, while the Peerless Assassin comes in at a higher C$51.39. Both coolers feature advanced technologies and design elements aimed at providing efficient heat dissipation, but they cater to slightly different user needs.
Design and Build Quality
The design of the Thermalright Assassin X 120R is marked by its symmetrical all-aluminum fins and a compact size of 120x71x151mm. This cooler not only looks aesthetically pleasing with its digital screen but is also designed for compatibility with most cases, ensuring effective heat dissipation without sacrificing space. Meanwhile, the Thermalright Peerless Assassin 120 features a twin-tower design with dimensions of 125x135x157mm. Its innovative offset asymmetric layout allows for unrestricted installation, making it user-friendly for various setups. Both coolers are constructed from aluminum, ensuring durability and efficient heat management.
Cooling Performance
When it comes to cooling performance, the Thermalright Assassin X 120R boasts a fan speed of 2000 RPM, delivering an air volume of 70.84 CFM and a wind pressure of 2.63 mm H2O. This cooler operates at a noise level of ≤ 29.8 dB(A), making it a relatively quiet option while still providing efficient cooling. On the other hand, the Thermalright Peerless Assassin 120 includes two PWM fans with a maximum speed of 1500 RPM, producing an airflow of 66.17 CFM and a quieter noise level of ≤ 25.6 dB(A). While the Assassin X has a slightly higher airflow and pressure, the Peerless Assassin’s dual fans may offer improved cooling in specific scenarios.
Compatibility
Both coolers are designed to support a range of CPU sockets, ensuring versatility across different platforms. The Thermalright Assassin X 120R is compatible with Intel's LGA 1851, 1700, and several other sockets, as well as AMD’s AM4 and AM5. This wide compatibility allows users to integrate the cooler into various setups. The Thermalright Peerless Assassin 120 also supports a broad range of sockets, including Intel's LGA 1150 to 2066 and AMD’s AM4 and AM5. Thus, users of either cooler can expect to find a suitable match for their existing hardware.
Noise Levels
The Thermalright Assassin X 120R operates at a noise level of ≤ 29.8 dB(A), which is fairly quiet, considering its performance capabilities. However, the Thermalright Peerless Assassin 120 manages to be even quieter, with a noise level of ≤ 25.6 dB(A). For users who prioritize silence, the Peerless Assassin may be the better choice, as it delivers excellent cooling performance without compromising on quiet operation. The difference in noise levels could be a significant factor for those who have noise-sensitive environments.
Lighting and Aesthetics
In terms of aesthetics, the Thermalright Assassin X 120R features ARGB lighting synchronized with the motherboard, providing a vibrant and customizable lighting experience. Its digital screen adds a modern touch, enhancing the overall appearance of the build. Conversely, the Thermalright Peerless Assassin 120 also incorporates ARGB lighting effects but focuses on a more sophisticated, high-brightness LED design that reflects light effectively. Both coolers cater to users looking to enhance the visual appeal of their PC builds, but the Assassin X may have a slight edge with its digital display.
Price Point
The Thermalright Assassin X 120R is priced at a more budget-friendly C$32.90, making it an attractive option for users looking for effective cooling without a hefty investment. In contrast, the Thermalright Peerless Assassin 120 is priced at C$51.39, which is a significant increase. While the Peerless offers additional features and dual fans, its higher price may not be justifiable for all users, especially those on a tighter budget. If cost is a primary concern, the Assassin X provides solid performance at a lower price.
Which should you buy?
Choosing between the Thermalright Assassin X 120R and the Thermalright Peerless Assassin 120 ultimately depends on your specific needs and preferences. If you are looking for a cost-effective cooler that offers strong performance, aesthetic appeal, and compatibility with a variety of sockets, the Assassin X is a commendable choice. However, if silence and advanced cooling capabilities are your priorities, the Peerless Assassin may be worth the extra investment. Consider your budget, noise sensitivity, and aesthetic preferences to make the best decision for your setup.
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