Thermalright Assassin X 120R Digital ARGB Black vs Thermalright Peerless Assassin 120 SE CPU Cooler,
Updated August 2026 — Thermalright Peerless Assassin 120 SE CPU Cooler, leads on noise level and cooling performa.
The Thermalright Assassin X 120R offers excellent value with a digital display and higher airflow, while the Peerless Assassin excels in quieter operation and advanced cooling technology.
Why Thermalright Assassin X 120R Digital ARGB Black is better
Price
Assassin X is cheaper at $24.90
Digital Display
Assassin X features a digital screen for monitoring
Higher Airflow
Assassin X has an airflow of 70.84 CFM
Why Thermalright Peerless Assassin 120 SE CPU Cooler, is better
Cooling Performance
Peerless Assassin has dual fans and 6 heat pipes
Noise Level
Peerless Assassin operates at 25.6 dB(A)
Brand Reputation
Peerless Assassin utilizes advanced AGHP technology
Overall score
Specifications
| Spec | Thermalright Assassin X 120R Digital ARGB Black | Thermalright Peerless Assassin 120 SE CPU Cooler, |
|---|---|---|
| Price | $24.90 | $49.99 |
| Noise Level | 29.8 dB(A) | 25.6 dB(A) |
| Heat Pipes | 4 | 6 |
| Compatibility | LGA 1851/1700/115X/1200, AM4/AM5 | LGA 1700/1150/1151/1200/1851, AM4/AM5 |
| Fan Type | PWM | PWM |
Dimension comparison
Price Comparison
When it comes to price, the Thermalright Assassin X 120R Digital ARGB Black CPU Cooler is notably cheaper than the Thermalright Peerless Assassin 120 SE CPU Cooler. The Assassin X is priced at $24.90, while the Peerless Assassin retails for $49.99, making the latter about 100% more expensive. For budget-conscious consumers, the Assassin X presents a compelling option without sacrificing too much in terms of performance or features.
Cooling Performance
In terms of cooling performance, the Peerless Assassin 120 SE has a slight edge with its six heat pipes and dual PWM fans. It features a maximum fan speed of 1550 RPM, providing a good airflow of 66.17 CFM while maintaining a noise level of 25.6 dB(A). On the other hand, the Assassin X offers a fan speed of up to 2000 RPM and an airflow of 70.84 CFM but operates at a higher noise level of 29.8 dB(A). While the Assassin X may cool slightly better, the Peerless Assassin is quieter, making it a more appealing option for those sensitive to noise.
Design and Aesthetics
The design of the Assassin X is enhanced by its digital screen top cover, which displays real-time CPU and GPU metrics. This feature not only adds aesthetic value but also practicality for monitoring system performance. Conversely, the Peerless Assassin, while robust in its dual tower design, opts for a more traditional look without the digital display. If aesthetics and real-time monitoring are important to you, the Assassin X is the clear winner in this category.
Compatibility
Both coolers are designed to be compatible with a variety of Intel and AMD sockets. The Assassin X supports Intel LGA 1851/1700/115X/1200 and AMD AM4/AM5 sockets, while the Peerless Assassin supports Intel LGA 1700/1150/1151/1200/1851 and AMD AM4/AM5. This broad compatibility ensures that both products can cater to a wide range of modern CPUs. However, users should verify their motherboard's backplate compatibility before installation.
Installation Ease
In terms of installation, both coolers come equipped with the necessary mounting hardware for Intel and AMD platforms. The Peerless Assassin offers a more robust installation with its metal fasteners, while the Assassin X includes an installation accessory as well. Both products require the original motherboard's backplate for AMD installations, which is a common requirement. The ease of installation is comparable, allowing users of varying skill levels to set up either cooler without significant hassle.
Brand Reputation
Thermalright is a well-established brand in the CPU cooler market, boasting over 20 years of experience in developing computer accessories. Both the Assassin X and Peerless Assassin models carry the brand's reputation for quality and performance. However, the Peerless Assassin, with its advanced AGHP technology and dual fans, may appeal more to enthusiasts looking for cutting-edge performance. Meanwhile, the Assassin X is an excellent choice for users seeking value.
User Experience and Noise Levels
User experience can vary significantly between these two coolers, particularly regarding noise levels. The Assassin X, while offering higher airflow and cooling capacity, operates at a higher noise level of 29.8 dB(A). In contrast, the Peerless Assassin maintains a quieter operation at 25.6 dB(A) due to its lower fan speed. This makes the Peerless Assassin a better choice for users who prioritize a quieter PC environment, especially in home or office settings.
Which should you buy?
Ultimately, the choice between the Thermalright Assassin X 120R Digital ARGB Black CPU Cooler and the Thermalright Peerless Assassin 120 SE CPU Cooler depends on your specific needs and preferences. If you’re looking for a budget-friendly option with a digital display and excellent cooling performance, the Assassin X at $24.90 is a solid choice. However, if you prefer a quieter operation and enhanced cooling capabilities with a dual-fan setup, the Peerless Assassin at $49.99 may be worth the investment. Each cooler has its unique advantages, making either a valid choice depending on your priorities.

