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Noctua NH-U12S Redux vs Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm

Updated August 2026The Noctua NH-U12S Redux excels in quiet operation and ease of installation, while the Thermalright Peerless Assassin offers superior cooling performance and aesthetics. Choose based on your priorities.

The Noctua NH-U12S Redux excels in quiet operation and ease of installation, while the Thermalright Peerless Assassin offers superior cooling performance and aesthetics. Choose based on your priorities.

Why Noctua NH-U12S Redux is better

quieter operation

Noctua operates nearly silent at idle

ease of installation

SecuFirm2 mounting system simplifies setup

compact design

Fits most cases without obstructing RAM

Why Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm is better

better cooling

Dual fans provide superior heat dissipation

modern aesthetics

Digital ARGB lighting enhances visual appeal

monitoring features

TRCC software allows real-time temperature monitoring

Overall score

Noctua NH-U12S Redux
85
Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm
78

Specifications

SpecNoctua NH-U12S ReduxThermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm
Fan Speed1700 RPM1850 RPM
Noise Level≤25 dB(A)≤25.6 dB(A)
CompatibilityLGA 1851, LGA 1700ATX compatible
Thermal PasteNT-H1 includednot specified
Cooling TypeSingle towerDual tower

Dimension comparison

Noctua NH-U12S ReduxThermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm

Overview of CPU Coolers

When searching for a reliable CPU cooler, the Noctua NH-U12S Redux and the Thermalright Peerless Assassin 120 Digital ARGB Black stand out as two strong contenders in the market. Priced at C$62.95 and C$62.90 respectively, both coolers offer impressive cooling performance and compatibility with a range of CPUs. However, they differ significantly in design, cooling technology, and additional features, making it essential to consider which cooler best suits your specific needs.

Design and Aesthetics

The Noctua NH-U12S Redux boasts a streamlined, compact design that measures 158mm in height, ensuring excellent compatibility with most tower cases and allowing for unobstructed access to RAM slots and PCIe slots. In contrast, the Thermalright Peerless Assassin stands taller at 162mm and features a dual-tower design enhanced with digital ARGB lighting. The aesthetic appeal of the Thermalright cooler with its black finish and digital display offers a modern look, while the Noctua cooler prioritizes functionality and performance over flashy visuals.

Cooling Performance

Cooling performance is a critical aspect when selecting a CPU cooler. The Noctua NH-U12S Redux features a quiet NF-P12 redux-1700 120mm fan, which operates with PWM for automatic speed control, ensuring effective cooling under load while remaining nearly silent at idle. On the other hand, the Thermalright Peerless Assassin employs dual fans that can reach speeds of 1850 RPM, with a wind pressure of 2.21mm H2O and an airflow of 88.89 CFM. This configuration allows for superior heat dissipation, making it a potentially better choice for overclocked CPUs or high-performance systems.

Noise Levels

Noise production is another important consideration for any CPU cooler. The Noctua NH-U12S Redux is designed for near-silent operation, especially at idle, making it an excellent choice for users who value a quiet computing environment. Although the Thermalright Peerless Assassin can generate noise levels of up to 25.6 dB(A), its dual fans provide robust cooling performance, which may be more noticeable under heavy loads. If noise levels are a priority, the Noctua cooler may be the more appealing option.

Compatibility

Both coolers offer broad compatibility with various CPU sockets. The Noctua NH-U12S Redux supports Intel LGA 1851, LGA 1700, LGA 1200, LGA 115x, and AMD AM5 & AM4 sockets. The Thermalright Peerless Assassin is also compatible with mainstream ATX chassis, allowing it to fit a wide variety of systems. However, the Noctua cooler stands out with its slim design, which not only fits most cases but also does not obstruct RAM slots or PCIe lanes, enhancing its versatility.

Installation Process

Ease of installation is crucial for any CPU cooler. The Noctua NH-U12S Redux comes with the SecuFirm2 mounting system, which simplifies the installation process across various platforms. In comparison, the Thermalright Peerless Assassin also offers a straightforward installation due to its user-friendly design, but it lacks the same level of established reputation for ease as Noctua. For those who may be installing a cooler for the first time, the Noctua might provide a slightly less stressful experience.

Additional Features

When it comes to additional features, the Thermalright Peerless Assassin has a distinct advantage with its TRCC software, which allows users to monitor CPU and GPU temperatures and customize the ARGB lighting. This feature can enhance the overall user experience by providing real-time feedback on system performance. The Noctua NH-U12S Redux, while lacking these advanced features, compensates with its high-quality NT-H1 thermal paste included in the package, ensuring optimal thermal conductivity right out of the box.

Pricing

Price is often a deciding factor when choosing between products. The Noctua NH-U12S Redux is priced at C$62.95, slightly higher than the Thermalright Peerless Assassin, which retails at C$62.90. This minor difference may influence budget-conscious buyers, but it’s essential to weigh the performance and features against the price to determine the better value.

Which should you buy?

In conclusion, the choice between the Noctua NH-U12S Redux and the Thermalright Peerless Assassin 120 Digital ARGB Black ultimately depends on your specific requirements. If you prioritize a compact design, quieter operation, and ease of installation, the Noctua NH-U12S Redux is the superior choice. However, if you're looking for enhanced cooling performance, improved aesthetics, and additional monitoring features, the Thermalright Peerless Assassin may be the better option for your build. Both coolers provide excellent value, but understanding their differences will help you make an informed decision that aligns with your cooling needs.

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Noctua NH-U12S Redux vs Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm | versusfinder