Thermalright Assassin X120 SE ARGB CPU Air Cooler vs Noctua NH-U12S redux
Updated August 2026 — The Thermalright Assassin X120 SE ARGB offers great value and aesthetics for budget builders, while the Noctua NH-U12S redux excels in quiet performance and reliability. Choose based on your priorities.
The Thermalright Assassin X120 SE ARGB offers great value and aesthetics for budget builders, while the Noctua NH-U12S redux excels in quiet performance and reliability. Choose based on your priorities.
Why Thermalright Assassin X120 SE ARGB CPU Air Cooler is better
price
Thermalright is significantly cheaper at £16.29.
RGB lighting
Thermalright features colorful ARGB lighting effects.
weight
Thermalright is lighter at 0.63kg.
Why Noctua NH-U12S redux is better
performance
Noctua is known for superior cooling performance.
noise level
Noctua operates quieter, especially at idle.
build quality
Noctua has a reputation for high-quality construction.
Overall score
Specifications
| Spec | Thermalright Assassin X120 SE ARGB CPU Air Cooler | Noctua NH-U12S redux |
|---|---|---|
| Price | £16.29 | £65.68 |
| Fan Speed | 1550 RPM | 1700 RPM |
| Noise Level | 25.6 dB(A) | unknown |
| Socket Support | Intel & AMD | Intel & AMD |
| Thermal Paste | No | Yes |
Dimension comparison
Overview of the Thermalright Assassin X120 SE ARGB CPU Air Cooler
The Thermalright Assassin X120 SE ARGB CPU Air Cooler is priced at £16.29, making it an attractive option for budget-conscious builders. This cooler stands out with its enhanced ARGB lighting effects and efficient cooling capabilities, boasting a maximum airflow of 66.17 CFM. Designed for compatibility with various Intel and AMD sockets, it is a versatile choice for many system builds.
Thermalright has a strong reputation, having been in the market for over 20 years, and their focus on the research and development of computer accessories is evident in the design of the Assassin X120. This cooler features a slim profile at 148mm in height, allowing it to fit in medium-sized cases while providing effective cooling performance.
Overview of the Noctua NH-U12S redux
The Noctua NH-U12S redux holds a higher price point at £65.68, but it is widely recognised for its quality and performance. It is a streamlined version of the award-winning NH-U12S heatsink, offering excellent compatibility with most tower cases due to its 158mm height, which ensures it does not overhang RAM slots or block PCIe slots.
Equipped with a quiet NF-P12 redux-1700 fan, the NH-U12S redux operates near silently at idle, while still delivering full cooling performance under load. The inclusion of high-end NT-H1 thermal paste and an easy-to-use SecuFirm2 mounting system further enhances its appeal to users looking for a reliable and easy-to-install CPU cooler.
Cooling Performance Comparison
In terms of cooling performance, the Thermalright Assassin X120 SE ARGB offers an airflow of 66.17 CFM, which is quite efficient for its size. The fan speed can reach up to 1550 RPM, providing a solid cooling solution for mid-range CPUs. The design also utilises the AGHP technique with four 6mm heat pipes, which helps to resolve any inverse gravity effects.
Conversely, the Noctua NH-U12S redux is designed for a balance of performance and quiet operation. While the exact airflow figure isn't provided, its NF-P12 redux-1700 fan is known for delivering reliable cooling at low noise levels. This makes it an excellent choice for users who prioritise a quiet computing environment without sacrificing thermal performance.
Noise Levels and Operation
When considering noise levels, the Thermalright Assassin X120 SE ARGB operates at a maximum noise level of 25.6 dB(A). This low noise output ensures that even under load, users can enjoy a relatively quiet experience during operation.
On the other hand, the Noctua NH-U12S redux is renowned for its silent operation, particularly at idle speeds. The fan's design allows it to run quietly while maintaining effective cooling performance. Both coolers are designed with noise reduction in mind, but Noctua has a longstanding reputation for quiet performance, which may appeal to users who seek a silent workstation or gaming setup.
Installation and Compatibility
The installation process for both coolers is designed to be user-friendly. The Thermalright Assassin X120 SE ARGB comes with metal fasteners compatible with a range of Intel and AMD sockets, including LGA1700 and AM5. This versatility ensures that it can accommodate various CPU models, making it a practical choice for many builders.
In comparison, the Noctua NH-U12S redux also provides excellent compatibility, supporting Intel's LGA1851, LGA1700, LGA1200, and LGA115x, as well as AMD's AM5 and AM4. The inclusion of the SecuFirm2 mounting system simplifies installation, ensuring that both novice and experienced builders can set up the cooler with ease. Overall, both products are designed for broad compatibility, but Noctua’s mounting system is particularly well-regarded for its ease of use.
Aesthetics and Design
Aesthetically, the Thermalright Assassin X120 SE ARGB shines with its colourful ARGB lighting effects, making it a visually striking addition to any build. The cooler's design is not only functional but also adds a flair of colour to the system, appealing to gamers and PC enthusiasts who value aesthetics.
Conversely, the Noctua NH-U12S redux features a more traditional design that is less flashy but still elegant. Its neutral colour scheme allows it to blend seamlessly with most builds. While it may not have RGB lighting, its reputation for quality and performance often outweighs its aesthetic appeal for many users.
Price and Value for Money
When it comes to price, the Thermalright Assassin X120 SE ARGB is significantly more affordable at £16.29, offering great value for those on a budget. Its performance and features, such as the ARGB lighting and efficient cooling, make it a compelling choice for cost-conscious consumers.
In contrast, the Noctua NH-U12S redux, priced at £65.68, represents a higher investment. However, its solid build quality, exceptional cooling performance, and quiet operation can justify the price for users who are willing to spend more for reliability and efficiency. It is important for buyers to consider their specific needs and budget when evaluating the value of each cooler.
Which should you buy?
Choosing between the Thermalright Assassin X120 SE ARGB and the Noctua NH-U12S redux ultimately depends on your priorities. If you are looking for an affordable cooler with good performance and striking aesthetics, the Thermalright Assassin X120 SE ARGB is an excellent choice. However, if you value quiet operation, proven reliability, and are willing to invest more for superior performance, the Noctua NH-U12S redux would be the better option. Assess your needs, budget, and preferences to determine which cooler aligns best with your system requirements.
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