Thermalright Assassin X 120R Digital ARGB Black vs Thermalright Peerless Assassin 120 Black CPU Air
Updated August 2026 — Thermalright Peerless Assassin 120 Black CPU Air leads on cooling performa and noise level.
The Thermalright Peerless Assassin 120 Black offers superior cooling performance and quieter operation, making it the better choice for demanding tasks. However, the Assassin X 120R is more budget-friendly and visually appealing.
Why Thermalright Assassin X 120R Digital ARGB Black is better
Price
Assassin X 120R is cheaper by $14
Aesthetics
Digital screen adds visual appeal
Height
Shorter height fits more cases
Why Thermalright Peerless Assassin 120 Black CPU Air is better
Cooling
Higher heat dissipation capability of 245W
Noise Level
Quieter operation at 25.6 dB(A)
Fan Setup
Dual fans provide better airflow
Overall score
Specifications
| Spec | Thermalright Assassin X 120R Digital ARGB Black | Thermalright Peerless Assassin 120 Black CPU Air |
|---|---|---|
| Max RPM | 2000 | 1500 |
| Airflow | 70.84 CFM | 66.17 CFM |
| Noise Level | 29.8 dB(A) | 25.6 dB(A) |
| TDP | N/A | 245W |
| Socket Support | AM4/AM5, LGA 1851/1700/115X/1200 | AM4/AM5, LGA 1150/1151/1155/1156/1200/1700/2066/2011 |
Dimension comparison
Introduction to CPU Coolers
When choosing a CPU cooler, performance and compatibility are key considerations. The Thermalright Assassin X 120R Digital ARGB Black CPU Cooler and the Thermalright Peerless Assassin 120 Black CPU Air Cooler are two notable options in the market. Each cooler offers unique features and benefits that cater to different user needs, making them worthy contenders for any PC build.
Design and Aesthetics
The Thermalright Assassin X 120R Digital ARGB Black boasts an eye-catching design with a digital screen top cover that displays real-time information about CPU temperature and usage. This cooler combines functionality with style, featuring an aluminum construction and a height of 151mm, ensuring it fits in most cases. In contrast, the Thermalright Peerless Assassin 120 Black features a twin-tower design, which enhances its cooling performance, but lacks the digital display of its counterpart. The Peerless Assassin's black spray paint finish provides a sleek look, making it equally appealing for those focused on aesthetics.
Cooling Performance
When it comes to cooling performance, the Thermalright Peerless Assassin 120 Black takes the lead with its six heat pipes and dual fan setup. The cooler has a heat dissipation capability of 245W, which makes it suitable for high-performance CPUs. In comparison, the Assassin X 120R uses four heat pipes and a single fan with a maximum speed of 2000 RPM, delivering effective cooling but at a lower capacity. The Peerless Assassin's effective heat dissipation area is 9600cm, making it a better choice for users engaging in heavy workloads or gaming.
Noise Levels
Noise levels can significantly affect user experience, especially in quiet environments. The Thermalright Peerless Assassin 120 Black operates at a noise level of up to 25.6 dB(A), which is relatively quiet for a dual fan setup. On the other hand, the Assassin X 120R has a slightly higher noise level, reaching up to 29.8 dB(A) due to its higher fan speed. Users prioritizing silent operations might prefer the Peerless Assassin for its quieter performance under load.
Compatibility
Compatibility is crucial when selecting a CPU cooler, especially for builds using AMD or Intel processors. The Thermalright Assassin X 120R is versatile, supporting a wide range of sockets, including AMD AM4/AM5 and Intel LGA 1851/1700/115X/1200. Similarly, the Peerless Assassin 120 Black supports an extensive range of sockets as well, including the same AMD and Intel options. This means both coolers can cater to a broad audience, ensuring they can be used in various builds without issue.
Installation Process
An efficient installation process can save time and frustration. The Thermalright Assassin X 120R comes with installation accessories and clear instructions for both Intel and AMD platforms. However, users must use the original backplate for AMD installations, which could complicate the process for some. The Peerless Assassin 120 Black also includes all necessary mounting hardware and is designed for straightforward installation, making it user-friendly for both novice and experienced builders.
Price Comparison
In terms of pricing, the Thermalright Assassin X 120R is priced at $24.90, making it about 36% cheaper than the Thermalright Peerless Assassin 120 Black, which retails for $38.90. The lower price of the Assassin X 120R might appeal to budget-conscious consumers looking for a reliable cooler without breaking the bank. However, the higher price of the Peerless Assassin reflects its superior cooling performance and additional features, which may justify the expense for users needing more robust cooling solutions.
Which should you buy?
Ultimately, the choice between the Thermalright Assassin X 120R Digital ARGB Black CPU Cooler and the Thermalright Peerless Assassin 120 Black CPU Air Cooler depends on individual needs. If you are looking for an affordable, visually appealing cooler with sufficient performance for everyday tasks, the Assassin X 120R is a solid choice. However, if you require a cooler capable of handling demanding tasks with superior performance and quieter operation, the Peerless Assassin 120 Black is worth the investment despite its higher price.

