Thermalright Assassin X 120R SE Plus CPU Cooler - 4×6mm Heat Pipes vs Thermalright Peerless Assassin 120 SE Black CPU Cooler
Updated August 2026 — The Thermalright Peerless Assassin 120 SE Black offers superior cooling performance and build quality, making it the better choice for high-demand applications. However, the Assassin X 120R SE Plus is a budget-friendly option for everyday use.
The Thermalright Peerless Assassin 120 SE Black offers superior cooling performance and build quality, making it the better choice for high-demand applications. However, the Assassin X 120R SE Plus is a budget-friendly option for everyday use.
Why Thermalright Assassin X 120R SE Plus CPU Cooler - 4×6mm Heat Pipes is better
lower price
C$25.59 vs C$46.79
quieter operation
designed for minimal noise
compact size
fits in smaller cases
Why Thermalright Peerless Assassin 120 SE Black CPU Cooler is better
better cooling
dual-tower design enhances heat dissipation
higher build quality
blackened nano coating improves aesthetics
more airflow
dual fans provide stronger airflow
Overall score
Specifications
| Spec | Thermalright Assassin X 120R SE Plus CPU Cooler - 4×6mm Heat Pipes | Thermalright Peerless Assassin 120 SE Black CPU Cooler |
|---|---|---|
| Max Airflow | 66.17 CFM | 66.17 CFM |
| Noise Level | ≤25.6 dB(A) | ≤25.6 dB(A) |
| Socket Support | Intel 1150-1700, AMD AM4/AM5 | Intel LGA1150-1851, AMD AM4/AM5 |
| Fan Type | PWM | PWM |
| Heat Pipe Size | 4x6mm | 6x6mm |
Dimension comparison
Overview of the Thermalright Assassin X 120R SE Plus CPU Cooler
The Thermalright Assassin X 120R SE Plus CPU Cooler is priced at C$25.59, making it an attractive option for budget-conscious users seeking reliable cooling performance. With its four 6mm heat pipes and double PWM fans, this cooler promises efficient thermal management while maintaining a noise level of no more than 25.6dB(A). The cooler features a compatibility range that includes Intel sockets (1150, 1151, 1155, 1156, 1200, 1700, 17XX) and AMD sockets (AM4, AM5), ensuring it can fit a variety of builds.
This cooler leverages the Advanced Gravity Heat Pipe (AGHP) technique to effectively mitigate inverse gravity effects, which can occur in various orientations. The integration of S-FDB bearings further enhances its longevity and reduces fan noise, making it suitable for users who prioritize quiet operation alongside thermal performance.
Overview of the Thermalright Peerless Assassin 120 SE Black CPU Cooler
The Thermalright Peerless Assassin 120 SE Black CPU Cooler is a more premium option, priced at C$46.79. Its design incorporates a dual-tower configuration, which contributes to superior cooling performance. The cooler is built with a combination of a blackened nano coating and a fully electroplated heat pipe, maximizing the effective heat dissipation area. It also features dual PWM fans, capable of producing a maximum airflow of 66.17 CFM at a noise level of 25.6dB(A).
With a height of 155mm, the Peerless Assassin is designed to fit comfortably in most chassis, including those with ITX motherboards. Its compatibility with Intel (LGA1150, 1151, 1155, 1156, 1200, 1700, 1851) and AMD (AM4, AM5) sockets makes it versatile for various setups, and its installation is facilitated by metal fasteners that enhance stability during operation.
Cooling Performance Comparison
When it comes to cooling performance, the Thermalright Peerless Assassin 120 SE Black has an edge over the Assassin X 120R SE Plus. The dual-tower design of the Peerless model allows for better heat dissipation, making it more effective for high-performance CPUs. The increased surface area from its dual-tower structure enhances the cooler's ability to manage heat, especially during intense workloads or gaming sessions, while both coolers maintain a similar maximum airflow of 66.17 CFM.
The Assassin X 120R, while efficient with its four heat pipes, may not offer the same level of cooling efficiency as its counterpart, particularly in overclocking scenarios where heat generation is significantly higher. Consequently, for users focused on extreme performance, the Peerless Assassin is likely the more suitable choice.
Noise Levels and Acoustic Performance
Both coolers are designed to operate quietly, with noise levels capped at 25.6dB(A). However, the Thermalright Assassin X 120R SE Plus, with its S-FDB bearings, has been specifically engineered to minimize noise and vibrations, which may appeal to users who prioritise a quiet computing environment. The dual fans of the Peerless Assassin, while capable of producing more airflow, might generate slightly more noise under heavy loads.
In general usage scenarios, both coolers provide a silent operation, but the Assassin X may have a slight advantage in low-noise environments due to its design focus on quiet performance. This makes it ideal for office setups or home theatres where noise can be distracting.
Build Quality and Design
The build quality of both coolers reflects Thermalright's commitment to premium materials and design. The Peerless Assassin features a blackened nano coating and a finely micro-carved copper base, significantly enhancing its heat dissipation capabilities. This attention to detail not only improves performance but also provides a sleek aesthetic that many users appreciate.
On the other hand, the Assassin X employs industrial-grade PBT + PC materials, ensuring durability and a long service life. The use of S-FDB bearings in the Assassin X is another highlight, as it reduces potential wear and tear, further extending the product's lifespan. While both coolers are built to last, the design elements of the Peerless Assassin may attract users looking for a more modern and stylish look.
Compatibility and Installation
Both the Thermalright Assassin X 120R SE Plus and Peerless Assassin 120 SE Black are compatible with a wide range of Intel and AMD sockets, making them versatile choices for various builds. The Assassin X supports Intel sockets 1150 through 1700 and AMD AM4 and AM5, while the Peerless model covers similar socket types, ensuring that users can find a suitable installation for their CPU.
Installation is straightforward for both coolers, with each providing the necessary mounting plates and fasteners. However, the Peerless Assassin's metal fasteners are designed for enhanced stability during installation, which can be a significant advantage for users who might be unfamiliar with cooler installation processes.
Price Comparison
Price is a crucial factor in any product comparison. The Thermalright Assassin X 120R SE Plus is priced at C$25.59, making it a budget-friendly option for users looking for decent cooling performance without breaking the bank. In contrast, the Thermalright Peerless Assassin 120 SE Black is significantly more expensive at C$46.79, reflecting its advanced features and superior cooling capabilities.
For budget-conscious gamers or PC builders, the Assassin X may represent a more appealing option, whereas users willing to invest more for enhanced performance and aesthetics might find the Peerless Assassin to be worth the additional cost.
Which should you buy?
In conclusion, the decision between the Thermalright Assassin X 120R SE Plus and the Thermalright Peerless Assassin 120 SE Black ultimately comes down to your specific needs. If you're looking for an affordable, quiet cooling solution suitable for everyday tasks and moderate gaming, the Assassin X at C$25.59 is an excellent choice. However, for those seeking superior cooling performance, especially for high-demand applications like gaming or overclocking, the Peerless Assassin at C$46.79 justifies its price with enhanced features and build quality.
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