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Noctua NH-U9S chromax.Black, vs Thermalright Peerless Assassin 120 SE V2 CPU

Updated August 2026 — Noctua NH-U9S chromax.Black, wins on durability and design, Thermalright Peerless Assassin 120 SE V2 CPU wins on compatibility.

The Noctua NH-U9S chromax.Black excels in quiet operation and compact design, while the Thermalright Peerless Assassin 120 SE V2 offers superior cooling performance at a lower price. Choose based on your priorities.

Why Noctua NH-U9S chromax.Black, is better

Noise Level

Quieter operation under load

Design

Sleek all-black aesthetic

Installation

Easier installation process

Why Thermalright Peerless Assassin 120 SE V2 CPU is better

Cooling Performance

Better heat dissipation with dual tower design

Price

More budget-friendly option

Airflow

Higher airflow with dual 120mm fans

Overall score

Noctua NH-U9S chromax.Black,
85
Thermalright Peerless Assassin 120 SE V2 CPU
75

Specifications

SpecNoctua NH-U9S chromax.Black,Thermalright Peerless Assassin 120 SE V2 CPU
Socket CompatibilityLGA115x, LGA1200, LGA1700, AM4/AM5LGA1700/1851, AM4/AM5
Max RPM15001850
Noise LevelQuiet29.5 dBA
Warranty6 years3 years
Cooling TypeSingle TowerDual Tower

Dimension comparison

Noctua NH-U9S chromax.Black,Thermalright Peerless Assassin 120 SE V2 CPU

Overview of the Noctua NH-U9S chromax.Black and Thermalright Peerless Assassin 120 SE V2

The Noctua NH-U9S chromax.Black is a compact, single-tower CPU cooler, while the Thermalright Peerless Assassin 120 SE V2 offers a dual-tower design. The price difference is significant: the Noctua cooler is priced at $74.95, whereas the Thermalright is about 48% cheaper at $38.99. This substantial price gap reflects the differing designs and capabilities of each cooler, making their comparison essential for potential buyers.

Design and Build Quality

The Noctua NH-U9S chromax.Black features a sleek, all-black design that enhances the aesthetic of any build. Its compact 92mm size allows it to fit easily in most tower cases, ensuring compatibility with RAM and PCIe slots. Meanwhile, the Thermalright Peerless Assassin 120 SE V2 boasts a robust dual-tower structure with six heat pipes, which enhances its thermal efficiency. This cooler's design is aimed at delivering superior heat dissipation, especially during high-load scenarios like gaming or multitasking. The distinct designs cater to different user preferences, with the Noctua appealing to those who prioritize space and aesthetics, while the Thermalright is suited for users seeking maximum cooling performance.

Cooling Performance

In terms of cooling performance, the Thermalright Peerless Assassin 120 SE V2 is built for efficiency with its dual tower and six heat pipes, which significantly improve heat transfer compared to standard coolers. The dual 120mm PWM fans can run up to 1850 RPM, providing a strong airflow of 88.89 CFM. On the other hand, the Noctua NH-U9S employs a renowned NF-A9 92mm fan, known for its whisper-quiet operation and effective cooling under load. While the Noctua is designed for quieter performance, the Thermalright offers more aggressive cooling, making it a better option for high-performance systems.

Compatibility

Both coolers are compatible with a wide range of CPU sockets, making them versatile choices for various builds. The Noctua NH-U9S supports Intel LGA115x, LGA1200, LGA1700, LGA1851, and AMD AM4/AM5 sockets. Similarly, the Thermalright Peerless Assassin 120 SE V2 supports AMD AM4/AM5 and Intel LGA1700/1851 platforms. This broad compatibility ensures that both coolers can be easily integrated into most modern desktop systems, appealing to a wide audience of builders.

Noise Levels

In terms of noise levels, the Noctua NH-U9S is designed for quiet operation, especially with its Low-Noise Adaptor, making it an excellent choice for users who prioritize silence in their builds. This cooler is known for maintaining a low noise profile even under load. Conversely, while the Thermalright Peerless Assassin 120 SE V2 operates at a higher RPM, it generates a maximum noise level of 29.5 dBA, which is relatively quiet for a dual-tower cooler. Users looking for silence may lean towards the Noctua, while those who need higher cooling performance at the cost of some noise might prefer the Thermalright.

Installation Process

The installation process can significantly impact the user experience when setting up a CPU cooler. The Noctua NH-U9S comes with a SecuFirm2 mounting system, which is designed for easy installation across various sockets, including both Intel and AMD platforms. This added convenience is a notable benefit for users who may be new to building PCs. The Thermalright Peerless Assassin 120 SE V2, while also offering a straightforward installation process, might require more effort due to its larger size and dual-tower design. Thus, while both coolers are relatively easy to install, the Noctua may have an edge in user-friendliness.

Price Comparison

The financial aspect is a crucial factor when choosing between these two coolers. The Noctua NH-U9S is priced at $74.95, while the Thermalright Peerless Assassin 120 SE V2 is offered at $38.99. This price difference of approximately 48% means that the Thermalright is the more economical choice for budget-conscious consumers. However, the Noctua's price reflects its premium design and quieter operation, appealing to users willing to pay more for enhanced aesthetics and performance.

Which should you buy?

Choosing between the Noctua NH-U9S chromax.Black and the Thermalright Peerless Assassin 120 SE V2 ultimately depends on your specific needs and preferences. If you prioritize a compact solution with quiet operation and premium aesthetics, the Noctua is an excellent choice, though at a higher price point of $74.95. On the other hand, if you are looking for superior cooling performance and a more budget-friendly option, the Thermalright, priced at $38.99, offers great value with its dual-tower design and efficient heat dissipation. Assess your build requirements and budget to determine which cooler aligns best with your needs.