Noctua NH-U12S Redux vs Thermalright Assassin X 120R Digital ARGB Black CPU Cooler
Updated August 2026 — The Noctua NH-U12S Redux offers superior performance and quieter operation, while the Thermalright Assassin X 120R is a budget-friendly option with appealing aesthetics.
The Noctua NH-U12S Redux offers superior performance and quieter operation, while the Thermalright Assassin X 120R is a budget-friendly option with appealing aesthetics.
Why Noctua NH-U12S Redux is better
Cooling Performance
Noctua offers quieter operation and better cooling efficiency.
Build Quality
Noctua is known for its premium build and durability.
Noise Levels
Noctua operates nearly silently at idle.
Why Thermalright Assassin X 120R Digital ARGB Black CPU Cooler is better
Price
Thermalright is significantly cheaper.
Aesthetics
Thermalright features RGB lighting.
Installation Compatibility
Thermalright supports a wide range of sockets.
Overall score
Specifications
| Spec | Noctua NH-U12S Redux | Thermalright Assassin X 120R Digital ARGB Black CPU Cooler |
|---|---|---|
| Fan Speed | 1700 RPM | 2000 RPM |
| Air Volume | N/A | 70.84 CFM |
| Socket Compatibility | LGA1851, AM4 | LGA1851, AM4 |
| Thermal Paste | Included | Not Included |
| ARGB Features | No | Yes |
Dimension comparison
Introduction to CPU Coolers
When it comes to keeping your CPU at optimal temperatures, selecting the right cooler is essential. In this comparison, we’ll examine the Noctua NH-U12S Redux and the Thermalright Assassin X 120R Digital ARGB Black CPU Cooler, two popular choices in the CPU cooling market. The Noctua is priced at C$62.95, while the Thermalright offers a more budget-friendly option at C$32.90. This article will explore their features, compatibility, and performance to help you make an informed decision.
Build Quality and Design
The Noctua NH-U12S Redux is a streamlined version of the award-winning NH-U12S, known for its renowned quality. It features a slim 120mm design, ensuring compatibility with most tower cases without interfering with RAM slots or PCIe lanes. In contrast, the Thermalright Assassin X 120R stands out with its all-aluminium fins and a striking digital screen that adds aesthetic value while providing effective heat dissipation. While both coolers are built to last, the Noctua’s reputation in quality might appeal to users prioritizing durability and performance.
Cooling Performance
Cooling efficiency is critical, especially under load. The Noctua NH-U12S Redux comes equipped with a quiet NF-P12 redux-1700 fan, which operates silently at idle and ramps up under heavy loads, offering excellent cooling performance. Its design optimally channels airflow, making it a solid choice for high-performance CPUs. The Thermalright Assassin X 120R, with its fan spinning at up to 2000 RPM and an air volume of 70.84 CFM, delivers impressive cooling capabilities as well. However, it operates at a maximum noise level of 29.8 dB(A), which might be a consideration for those seeking a quieter setup.
Installation Process
Ease of installation can significantly affect the overall user experience. The Noctua NH-U12S Redux includes the SecuFirm2 mounting system, designed for straightforward installation on various Intel and AMD sockets, including LGA1700 and AM5. This user-friendly approach is a plus for those who may not be seasoned builders. The Thermalright Assassin X 120R also offers a wide compatibility range, supporting Intel’s 14th and 15th Gen along with AMD's Ryzen 7000 series. However, it requires the original backplate of the motherboard for AMD installations, which may complicate the process for some users.
Noise Levels
Noise levels are a crucial factor for many PC builders, especially those who prefer a quieter workspace. The Noctua NH-U12S Redux is designed to operate nearly silently at idle, making it an excellent choice for noise-sensitive environments. In contrast, while the Thermalright Assassin X 120R can push higher RPMs for better cooling, it operates at a maximum noise level of 29.8 dB(A), which may be noticeable in a quiet room. If a silent operation is a priority, the Noctua’s engineering may be more suited to your needs.
Aesthetics and RGB Features
For users who appreciate visual flair, the Thermalright Assassin X 120R shines with its ARGB features. The cooler’s fan can synchronise with a motherboard’s ARGB header to create vibrant lighting effects, adding personalisation and flair to your build. The digital screen on the top cover not only enhances its look but also provides useful information. Conversely, the Noctua NH-U12S Redux maintains a more classic and understated appearance, focusing on performance rather than flashy aesthetics. Those prioritising RGB lighting will likely lean towards the Thermalright cooler.
Pricing and Value
When it comes to cost, the Noctua NH-U12S Redux is priced at C$62.95, which reflects its premium build quality and reputation. On the other hand, the Thermalright Assassin X 120R is significantly cheaper at C$32.90, making it a compelling choice for budget-conscious users who still desire good performance and aesthetics. While the Noctua may offer superior performance and lower noise levels, the Thermalright provides excellent value for those willing to compromise slightly on these aspects.
Compatibility
Both coolers boast extensive compatibility with modern CPU sockets. The Noctua NH-U12S Redux supports a broad range of Intel and AMD sockets, including LGA1851 and AM4. Similarly, the Thermalright Assassin X 120R is compatible with various Intel and AMD platforms. However, the installation process for AMD users may require additional steps due to the need for the original motherboard backplate. Overall, both coolers are versatile, but the Noctua offers easier installation for a wider range of setups.
Which should you buy?
Ultimately, the choice between the Noctua NH-U12S Redux and the Thermalright Assassin X 120R Digital ARGB Black CPU Cooler boils down to your specific needs and priorities. If you’re looking for a high-quality, quiet cooler with a strong reputation and excellent performance, the Noctua NH-U12S Redux is an outstanding choice, despite its higher price point. Conversely, if you’re on a budget but still want a cooler that provides good performance and appealing aesthetics, the Thermalright Assassin X 120R is a great option. Consider your needs regarding noise, installation, and aesthetics to make the best decision for your build.
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