Noctua NH-U12S Redux vs Thermalright Peerless Assassin 120 SE Black CPU Cooler
Updated August 2026 — The Noctua NH-U12S Redux is a premium choice for quiet operation and reliability, while the Thermalright Peerless Assassin offers excellent value and cooling performance at a lower price.
The Noctua NH-U12S Redux is a premium choice for quiet operation and reliability, while the Thermalright Peerless Assassin offers excellent value and cooling performance at a lower price.
Why Noctua NH-U12S Redux is better
reputation
Noctua is known for high-quality cooling solutions
noise level
Noctua operates quieter at idle
installation
SecuFirm2 system simplifies installation
Why Thermalright Peerless Assassin 120 SE Black CPU Cooler is better
price
Thermalright is more affordable
cooling performance
Dual fans provide better airflow
design
Robust dual tower design appeals to some users
Overall score
Specifications
| Spec | Noctua NH-U12S Redux | Thermalright Peerless Assassin 120 SE Black CPU Cooler |
|---|---|---|
| Brand | Noctua | Thermalright |
| Price | C$62.95 | C$46.79 |
| Fan Count | 1 | 2 |
| Air Volume | N/A | 66.17 CFM |
| Compatibility | Intel LGA115x, LGA1700, AMD AM4/AM5 | Intel LGA1150-1851, AMD AM4/AM5 |
Dimension comparison
Price Comparison
When it comes to pricing, the Thermalright Peerless Assassin 120 SE Black CPU Cooler is notably more affordable at C$46.79, while the Noctua NH-U12S Redux is priced at C$62.95. This means that the Noctua option costs C$16.16 more than its competitor. For budget-conscious buyers, the lower price of the Thermalright cooler may be more appealing, especially considering it still offers a range of features suited for effective cooling.
Cooling Performance
The Thermalright Peerless Assassin boasts dual fans that provide a maximum air volume of 66.17 CFM and a noise level of just 25.6 dB(A). This configuration is designed to enhance cooling efficiency, making it a strong contender for users seeking powerful performance. In contrast, the Noctua NH-U12S Redux features a single, quiet NF-P12 redux-1700 fan which is designed to deliver excellent cooling alongside minimal noise. While the Noctua is renowned for its cooling performance, the dual-fan setup of the Thermalright may offer superior heat dissipation, particularly in more demanding situations.
Compatibility
Both coolers are compatible with a variety of Intel and AMD CPU sockets. The Thermalright Peerless Assassin supports a broad range of Intel sockets, including LGA1150 to LGA1851, as well as AMD AM4 and AM5. Meanwhile, the Noctua NH-U12S Redux also accommodates a similar range of Intel sockets, from LGA115x to LGA1700, and AMD AM4 and AM5. For users with diverse builds, both options provide excellent compatibility, ensuring that they can fit into most modern setups without issue.
Installation Process
The installation process for both coolers is designed to be straightforward. The Noctua NH-U12S Redux includes the SecuFirm2 mounting system, which simplifies installation across various Intel and AMD platforms. The Thermalright Peerless Assassin also features metal fasteners and appropriate mounting kits for both Intel and AMD, ensuring a secure fit. Users can expect a hassle-free setup with either cooler, making them both suitable for those who may not be experienced with CPU cooler installations.
Design and Aesthetics
In terms of aesthetics, the Noctua NH-U12S Redux offers a sleek design that fits well in most build environments, thanks to its streamlined profile. Its slim 120mm size ensures that it won’t overhang RAM slots or block PCIe slots on most motherboards. Conversely, the Thermalright Peerless Assassin presents a more robust design with its dual tower configuration and black finish, which may appeal to users looking for a bolder look. Depending on personal preference, either cooler can complement a build aesthetically.
Noise Levels
Noise performance is a critical factor for many users, especially those building quiet systems. The Noctua NH-U12S Redux is known for its quiet operation, especially at idle, while still providing full cooling performance under load. The thermalright boasts a maximum noise level of 25.6 dB(A) due to its dual fan setup, which is also designed to operate quietly. While both options aim for low noise levels, those prioritizing near-silent operation may lean towards the Noctua cooler given its reputation for quiet performance.
Brand Reputation
Noctua has established itself as a leading brand in the cooling market, known for its high-quality products and excellent performance. The NH-U12S Redux is a part of their award-winning lineup, offering reliability and efficiency. On the other hand, Thermalright, while also respected, may not have the same level of recognition as Noctua. However, the Peerless Assassin has garnered positive feedback for its performance-to-price ratio, making it a worthy consideration for users seeking value.
Which should you buy?
Ultimately, the decision between the Noctua NH-U12S Redux and the Thermalright Peerless Assassin 120 SE Black CPU Cooler will depend on your specific needs and budget. If you are looking for a cooler with a strong reputation for quiet operation and excellent performance, the Noctua might be the better choice, albeit at a higher price of C$62.95. Conversely, if you prioritise affordability and are willing to explore a dual-fan setup for potentially better cooling, the Thermalright Peerless Assassin at C$46.79 could be the ideal option. Each cooler brings unique strengths to the table, making either a solid investment depending on your requirements.
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