Thermalright Assassin X120 Refined SE CPU Air vs Thermalright Peerless Assassin 120 Digital ARGB
Updated July 2026 — Thermalright Peerless Assassin 120 Digital ARGB leads on width and height.
The Thermalright Peerless Assassin 120 Digital ARGB Black offers superior cooling performance and aesthetics compared to the Assassin X120. However, the Assassin X120 is a more budget-friendly option.
Why Thermalright Assassin X120 Refined SE CPU Air is better
Price
Assassin X120 is significantly cheaper at $17.90.
Noise Level
Both coolers operate at a maximum noise level of 25.6 dB(A).
Compatibility
Both coolers support a wide range of CPU sockets.
Why Thermalright Peerless Assassin 120 Digital ARGB is better
Cooling Performance
Peerless Assassin has six heat pipes and higher airflow.
Design
Peerless features a digital screen top cover and dual-tower design.
Fan Speed
Peerless operates at a higher fan speed of 1850 RPM.
Overall score
Specifications
| Spec | Thermalright Assassin X120 Refined SE CPU Air | Thermalright Peerless Assassin 120 Digital ARGB |
|---|---|---|
| Heat Pipes | 4 | 6 |
| Airflow | 66.17 CFM | 88.89 CFM |
| Max RPM | 1550 | 1850 |
| Noise Level | ≤25.6 dB(A) | ≤25.6 dB(A) |
| Socket Support | Intel LGA 1150/1151/1155/1200/1700/AM4/AM5 | Intel LGA 1150/1151/1155/1200/1700/AM4/AM5 |
Dimension comparison
Overview of Thermalright's Offerings
Thermalright presents two compelling CPU air cooler options: the Thermalright Assassin X120 Refined SE and the Thermalright Peerless Assassin 120 Digital ARGB Black. Each product is designed to cater to the cooling needs of modern CPUs but varies significantly in features and pricing. The Assassin X120 is priced at $17.90, making it about 61% cheaper than the Peerless Assassin, which retails for $45.90. This price difference indicates varying target audiences and performance expectations for each cooler.
Design and Build Quality
The Thermalright Assassin X120 Refined SE features a compact design with an aluminium heatsink cover, while the Peerless Assassin 120 Digital ARGB Black boasts a more elaborate dual-tower structure with a sleek black finish. The Peerless model stands taller at 162mm compared to the Assassin X120's 148mm, which may affect compatibility with certain cases. Additionally, the digital screen top cover of the Peerless provides an aesthetically pleasing interface, integrating functionality with style. Overall, while both coolers are robustly built, the Peerless offers a more premium design that may appeal to users looking for both performance and visual flair.
Cooling Performance
Cooling efficiency is crucial, and here the Peerless Assassin excels with its six heat pipes and dual fans, delivering up to 88.89 CFM of airflow compared to the Assassin X120's four heat pipes and a single fan providing 66.17 CFM. The Peerless operates at a fan speed of 1850 RPM, ensuring superior heat dissipation, which is essential for overclocking or intense workloads. The Assassin X120, with a maximum noise level of 25.6 dB(A), matches the Peerless but may not handle extreme heat loads as effectively due to its lower airflow capacity.
Noise Levels
Both Thermalright coolers maintain a similar noise level, capped at 25.6 dB(A). This means that users can expect a quiet operating environment with both options. However, the superior airflow and fan design of the Peerless Assassin may result in quieter performance under load due to its dual-fan setup. In contrast, the Assassin X120, with its single fan, may work harder to achieve similar cooling performance, potentially leading to increased noise during high-temperature scenarios.
Compatibility
Compatibility is a strong point for both products, as they support a wide range of CPU sockets. The Assassin X120 is designed for various Intel sockets, including LGA 1150, 1151, 1155, 1200, and 1700, as well as AMD AM4 and AM5. Similarly, the Peerless Assassin supports the same Intel and AMD sockets, providing flexibility for users planning to upgrade or change their CPUs. The presence of dual-platform mounting clips in the Peerless model enhances its ease of installation, making it a more user-friendly option for builders.
Cooling Technology
The cooling technology employed in both models showcases Thermalright's commitment to effective thermal management. The Assassin X120 uses AGHP (Advanced Gravity Heat Pipe) technology with four heat pipes to combat the inverse gravity effect, ensuring consistent performance regardless of orientation. The Peerless Assassin, however, takes this a step further with its 5.0 version of AGHP technology and six heat pipes, which enhances heat dissipation efficiency and overall cooling performance, particularly under load.
Aesthetic Appeal
While performance is paramount, aesthetic considerations are increasingly important for many PC builders. The Peerless Assassin features a digital screen top cover that not only adds a modern touch but also allows for real-time monitoring of temperatures or fan speeds. Its sleek black design contrasts with the more traditional look of the Assassin X120. If visual appeal is a priority, the Peerless Assassin is likely the better choice, as it combines functionality with an attractive design aesthetic that stands out in any setup.
Price Comparison
The pricing of these two coolers illustrates their market positioning clearly. The Assassin X120 is priced at $17.90, making it an economical choice for budget-conscious consumers or those looking for basic performance. In contrast, the Peerless Assassin is priced at $45.90, which is approximately 156% more expensive. This significant price difference reflects the enhanced features and cooling capabilities of the Peerless model. For gamers or professionals requiring superior cooling, the investment in the Peerless may be justified, whereas casual users may find the Assassin X120 more than sufficient for their needs.
Which should you buy?
Choosing between the Thermalright Assassin X120 Refined SE and the Thermalright Peerless Assassin 120 Digital ARGB Black ultimately depends on your specific requirements and budget. If you're looking for an affordable, reliable cooler for standard performance, the Assassin X120 at $17.90 is an excellent choice. However, if you need advanced cooling capabilities, aesthetics, and are willing to invest more, the Peerless Assassin at $45.90 stands out with its superior design and performance features. Consider your cooling needs and budget to make the best decision for your setup.

