Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm vs Noctua NH-U12S
Updated August 2026 — The Thermalright Peerless Assassin offers superior cooling performance at a lower price, while the Noctua NH-U12S excels in build quality and warranty.
The Thermalright Peerless Assassin offers superior cooling performance at a lower price, while the Noctua NH-U12S excels in build quality and warranty.
Why Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm is better
price
Thermalright is priced at C$62.90 compared to Noctua's C$79.95
cooling performance
Dual fans provide better airflow (88.89 CFM) than Noctua's single fan
noise level
Lower operational noise level (≤25.6 dB(A)) compared to Noctua
Why Noctua NH-U12S is better
brand warranty
Noctua offers a 6-year warranty, indicating reliability
compatibility
Slim design prevents overhang on RAM and PCIe slots
installation ease
Includes SecuFirm2 mounting system for straightforward setup
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm | Noctua NH-U12S |
|---|---|---|
| Cooling Type | Air | Air |
| Fan Count | 2 | 1 |
| Thermal Paste | Not included | Included |
| RGB Lighting | Yes | No |
| Mounting System | Standard | SecuFirm2 |
Dimension comparison
Overview of the Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler
The Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler is designed for excellent heat dissipation and aesthetic appeal. Priced at C$62.90, it features a dual-tower design with dual fans that operate at a speed of 1850 RPM, delivering an air volume of 88.89 CFM. The cooler is equipped with six copper heat pipes, ensuring effective thermal transfer from the CPU. Its overall height is 162mm, making it compatible with most ATX chassis.
Overview of the Noctua NH-U12S
The Noctua NH-U12S is a well-regarded CPU cooler known for its slim-tower design and outstanding cooling performance, priced at C$79.95. It features a 120mm fan optimised for focused airflow and comes with PWM support for automatic speed control, ensuring quiet operation. The NH-U12S does not overhang RAM or PCIe slots, making it a practical choice for various builds. It also includes a high-quality thermal paste and an easy-to-use mounting system for compatibility with a range of Intel and AMD sockets.
Cooling Performance Comparison
When it comes to cooling performance, the Thermalright Peerless Assassin offers notable specifications with a dual-fan setup that provides a maximum speed of 1850 RPM and an air volume of 88.89 CFM. This configuration is designed for optimal heat dissipation, which is crucial for high-performance CPUs. On the other hand, the Noctua NH-U12S employs a single NF-F12 120mm fan but is highly efficient due to its focused airflow design. While the NH-U12S is recognised for its effective cooling capabilities, the Peerless Assassin’s dual-fan design may provide superior performance in more demanding scenarios.
Noise Levels and Operation
The Thermalright Peerless Assassin operates with a noise level of ≤25.6 dB(A), which is relatively quiet considering its performance capabilities. This makes it suitable for users who prefer a quieter computing environment. The Noctua NH-U12S is designed with noise reduction in mind as well, featuring a Low-Noise Adaptor for automatic speed control that contributes to its ultra-quiet operation. Both coolers excel in maintaining low noise levels, but the Peerless Assassin may have a slight edge due to its lower operational noise specification.
Compatibility and Installation
The Thermalright Peerless Assassin stands at a height of 162mm, allowing for compatibility with most ATX chassis. Its dual-tower design is also engineered to ensure that it does not interfere with high-capacity memory or graphics cards. Conversely, the Noctua NH-U12S is noted for its slim-tower design, which prevents overhang on RAM or PCIe slots, a crucial feature for compact builds. Installation is made simple with the included SecuFirm2 mounting system, ensuring that users can easily set it up on a variety of Intel and AMD sockets.
Aesthetic Appeal
Aesthetically, the Thermalright Peerless Assassin integrates a digital ARGB feature, adding a modern touch to any build. The magnetic top cover not only enhances its visual appeal but also serves a functional purpose in heat dissipation. In contrast, the Noctua NH-U12S focuses on a classic design that prioritises performance over flashy aesthetics. While it may lack RGB lighting, its understated look is appreciated by users who prefer a more traditional approach.
Brand Reputation and Warranty
Both brands have established strong reputations in the cooling market. Thermalright is recognised for its innovative designs and effective cooling solutions, while Noctua is celebrated for its quality and reliability, backed by a 6-year manufacturer’s warranty. This warranty is a significant advantage for potential buyers of the NH-U12S, as it reflects the brand's confidence in their product's durability.
Which should you buy?
Deciding between the Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler and the Noctua NH-U12S ultimately depends on your specific needs and preferences. If you prioritise superior cooling performance with dual fans and a lower noise level at a more affordable price of C$62.90, the Thermalright Peerless Assassin is an excellent choice. However, if you seek a proven, reliable cooler with a solid warranty and exceptional compatibility features, the Noctua NH-U12S, priced at C$79.95, may be worth the investment. Each cooler offers distinct advantages, so your final decision should align with your personal requirements and build considerations.
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