Thermalright Assassin X 120R Digital ARGB Black vs Thermalright Peerless Assassin 120 Black CPU Air
Updated August 2026 — Thermalright Assassin X 120R Digital ARGB Black wins on noise level, Thermalright Peerless Assassin 120 Black CPU Air wins on cooling and compatibility.
The Thermalright Peerless Assassin 120 Black offers superior cooling performance and features, making it the better choice for high-demand users. However, the Assassin X 120R is a more budget-friendly option.
Why Thermalright Assassin X 120R Digital ARGB Black is better
Price
Assassin X 120R is cheaper at $22.90
Aesthetics
Digital screen and ARGB lighting
Height
Shorter at 151mm for better case compatibility
Why Thermalright Peerless Assassin 120 Black CPU Air is better
Cooling
Higher TDP handling at 245W
Heat Pipes
More effective with 6 heat pipes
Airflow
Dual fans provide better airflow
Overall score
Specifications
| Spec | Thermalright Assassin X 120R Digital ARGB Black | Thermalright Peerless Assassin 120 Black CPU Air |
|---|---|---|
| Heat Pipes | 4 | 6 |
| TDP | Unknown | 245W |
| Noise Level | Low | 25.6 dB(A) |
| ARGB | Yes | No |
| PWM Fan | Yes | Yes |
Dimension comparison
Overview of the Thermalright Assassin X 120R Digital ARGB Black
The Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler offers a competitive cooling solution with a price of $22.90. This cooler is equipped with a PWM fan that operates at a maximum speed of 2000 RPM and features four heat pipes designed to enhance thermal performance. It is compatible with a variety of CPU sockets including AM4, AM5, and Intel LGA 1700/1851/1150/1151/1200.
The Assassin X 120R stands out with its digital screen that displays performance metrics, adding a modern touch to its design. Additionally, the cooler includes ARGB lighting which can be synchronized with the motherboard for an aesthetically pleasing setup. This cooler's combination of functionality and style makes it appealing to users looking for effective cooling without breaking the bank.
Overview of the Thermalright Peerless Assassin 120 Black
In contrast, the Thermalright Peerless Assassin 120 Black CPU Air Cooler is priced at $38.90, making it about 70% more expensive than the Assassin X 120R. This model features six heat pipes and is specifically engineered for enhanced cooling efficiency, capable of handling a TDP of 245W. The Peerless Assassin is also compatible with a wide range of sockets, including AMD AM4/AM5 and several Intel models.
The standout features of the Peerless Assassin include its dual fan configuration, which can provide superior airflow compared to single-fan designs. With a maximum fan speed of 1500 RPM and an airflow rating of 66.17 CFM, this cooler aims to deliver exceptional thermal performance while keeping noise levels below 25.6 dB(A).
Cooling Performance Comparison
The cooling capabilities of the two products differ significantly, with the Peerless Assassin 120 Black designed for higher thermal loads. The six heat pipes of the Peerless model provide a greater effective heat dissipation area of 9600 cm², enhancing its cooling performance under intense workloads. In contrast, the Assassin X 120R, with its four heat pipes, is still effective but may not perform as well under maximum stress conditions.
While the Assassin X 120R's fan can run at a higher speed of 2000 RPM, the dual fans on the Peerless Assassin create a more balanced airflow distribution, further improving its cooling efficiency. For users with high-performance CPUs or those who engage in overclocking, the Peerless Assassin may offer the edge needed for optimal thermal management.
Design and Aesthetics
When it comes to design, both coolers have unique features that cater to different preferences. The Assassin X 120R showcases a modern aesthetic with its digital screen and ARGB lighting, allowing users to customize their setup visually. This combination of performance and style makes it a great choice for gamers and PC builders who value aesthetics.
On the other hand, the Peerless Assassin 120 Black opts for a more understated approach with its sleek black finish and robust dual tower design. While it may not feature digital displays or RGB lighting, its solid construction and effective heat dissipation are visually appealing in their own right. Ultimately, the choice between aesthetics comes down to personal preference, as both coolers are designed to complement a variety of builds.
Installation and Compatibility
Both the Assassin X 120R and the Peerless Assassin 120 Black are designed with ease of installation in mind. The Assassin X 120R is compatible with modern CPU sockets, making it a versatile option for a wide range of builds. Its height of 151mm allows it to fit in most cases without sacrificing heat dissipation performance.
The Peerless Assassin, while slightly taller at 157mm, also offers compatibility with multiple Intel and AMD sockets, ensuring a broad user base. Its installation process is simplified by the inclusion of metal fasteners for both platforms. Users should consider the dimensions of their cases and ensure compatibility before making a final decision on which cooler to purchase.
Noise Levels
Noise levels play a crucial role in the overall user experience, especially for those who prioritize a quiet computing environment. The Assassin X 120R utilizes a PWM fan that has been designed to minimize noise, though exact decibel ratings are not provided. The combination of silicone corner pads and an S-FDB bearing helps reduce operational noise, making it a suitable choice for silent builds.
In comparison, the Peerless Assassin 120 Black is rated at a maximum noise level of 25.6 dB(A), which is relatively quiet for a dual fan setup. The use of PWM fans ensures that noise levels remain low even under heavy loads. For users sensitive to sound, both coolers are designed with noise reduction in mind, but the Peerless Assassin offers a quantifiable rating for reference.
Price Analysis
Price is a significant factor when choosing between the two coolers. The Assassin X 120R is priced at $22.90, which is very budget-friendly for a cooler with its features. In contrast, the Peerless Assassin 120 Black is priced at $38.90, making it approximately 70% more expensive.
While the price difference may be justified by the superior cooling performance and dual fan setup of the Peerless Assassin, budget-conscious users might find the Assassin X 120R to be a more appealing option. Ultimately, potential buyers should weigh their cooling needs against their budget constraints before making a decision.
Which should you buy?
Choosing between the Thermalright Assassin X 120R Digital ARGB Black and the Thermalright Peerless Assassin 120 Black comes down to your specific cooling requirements and budget. If you're looking for a cost-effective solution with decent performance and appealing aesthetics, the Assassin X 120R is an excellent choice at $22.90. However, if you require superior cooling performance for high-demand applications and are willing to invest more, the Peerless Assassin 120 Black at $38.90 may be the better option. Each cooler has its strengths, so consider what features matter most to you before making a purchase.

