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Noctua NH-U9S chromax.Black, vs Thermalright Peerless Assassin 120 Digital ARGB

Updated August 2026 — Noctua NH-U9S chromax.Black, leads on warranty and build quality.

The Noctua NH-U9S chromax.Black offers superior performance and quieter operation, making it the better choice for users prioritizing quality and reliability. However, the Thermalright Peerless Assassin 120 Digital is a solid budget option with good aesthetics.

Why Noctua NH-U9S chromax.Black, is better

Performance

Noctua cooler has received over 100 awards for its cooling efficiency.

Noise Level

Noctua operates quieter due to its advanced fan technology.

Warranty

Noctua offers a six-year warranty, indicating higher reliability.

Why Thermalright Peerless Assassin 120 Digital ARGB is better

Price

Thermalright is significantly cheaper at $45.90.

Aesthetics

Thermalright features a modern digital screen top cover.

Size

Thermalright's larger design may appeal to users with more space.

Overall score

Noctua NH-U9S chromax.Black,
85
Thermalright Peerless Assassin 120 Digital ARGB
75

Specifications

SpecNoctua NH-U9S chromax.Black,Thermalright Peerless Assassin 120 Digital ARGB
Cooling TypeAirAir
Fan SpeedPWM1850 RPM
Socket CompatibilityLGA115x, AM4LGA1700, AM4
Warranty6 yearsN/A
Heat Pipes06

Dimension comparison

Noctua NH-U9S chromax.Black,Thermalright Peerless Assassin 120 Digital ARGB

Price Comparison

The Noctua NH-U9S chromax.Black is priced at $74.95, making it significantly more expensive than the Thermalright Peerless Assassin 120 Digital, which is available for $45.90. This represents a price difference of about 38%. If you are budget-conscious, the Thermalright option may be more appealing, offering solid performance at a lower price point. However, the Noctua cooler is renowned for its premium quality and effective cooling capabilities, which may justify the higher cost for users seeking reliability and performance.

Design and Aesthetics

The Noctua NH-U9S chromax.Black features an all-black design that is visually appealing and complements various color schemes, making it a stylish addition to most builds. In contrast, the Thermalright Peerless Assassin 120 Digital also has a sleek black appearance but stands out with its digital screen top cover, showcasing a modern aesthetic that may attract tech enthusiasts. While both coolers have their own design merits, the Noctua's compact 92mm size allows for excellent compatibility with cases, RAM, and PCIe slots, potentially making it more versatile in tighter builds compared to the larger 162mm height of the Thermalright.

Cooling Performance

When it comes to cooling performance, the Noctua NH-U9S chromax.Black is equipped with a renowned NF-A9 92mm fan, which is designed to provide full cooling performance under load while remaining whisper-quiet at idle. This design has earned the cooler numerous awards and recommendations from hardware websites, showcasing its effectiveness. On the other hand, the Thermalright Peerless Assassin 120 Digital utilizes a dual tower design with dual fans and six heat pipes, promising good heat dissipation. Its fan operates at a speed of 1850 RPM, delivering an air volume of 88.89 CFM. While both coolers offer strong performance, the choice may come down to personal preference regarding noise levels and aesthetics.

Installation and Compatibility

The Noctua NH-U9S chromax.Black includes the SecuFirm2 mounting system, which facilitates easy installation on a wide range of Intel and AMD sockets, including LGA1700 and AM4. Its compact design ensures compatibility with most tower cases and does not obstruct RAM slots or PCIe slots. Meanwhile, the Thermalright Peerless Assassin 120 Digital is compatible with various platforms, including AM4 and LGA1700, and comes with dual-platform mounting clips. However, its larger size may limit compatibility in smaller cases. For users with space constraints, the Noctua cooler may be the more practical choice.

Noise Levels

Noise levels are a crucial consideration for many PC builders, especially those who prioritize a quiet workspace. The Noctua NH-U9S chromax.Black is engineered to operate quietly, thanks to its low-noise adaptor and PWM fan control, which adjusts the fan speed based on temperature. This allows for optimal cooling performance without the noise that can come with higher RPMs. In comparison, the Thermalright Peerless Assassin 120 Digital operates at a maximum noise level of 25.6 dB(A), which is competitive but may not match the quiet operation of the Noctua cooler. Users particularly sensitive to noise might lean towards the Noctua for its superior acoustics.

Warranty and Brand Reputation

Noctua is known for its reliability, backed by a six-year manufacturer's warranty, which reinforces the brand's commitment to quality. This extensive warranty period is a testament to the durability and performance of the NH-U9S chromax.Black. Thermalright, while also a reputable brand, does not advertise a specific warranty period in the provided data. The confidence in Noctua's products, along with their numerous awards, makes it a strong contender for users seeking long-term reliability in their cooling solutions.

User Experience and Reviews

The Noctua NH-U9S chromax.Black has received accolades for its performance and has garnered over 100 awards and recommendations from international hardware websites, highlighting its positive reception among users and reviewers alike. The Thermalright Peerless Assassin 120 Digital likewise boasts a solid reputation, particularly for its innovative features like the magnetic top cover and dual fans. However, specific user reviews and experiences with the Thermalright cooler are not detailed in the provided data, making it challenging to fully assess its standing compared to the well-established Noctua model.

Which should you buy?

Deciding between the Noctua NH-U9S chromax.Black and the Thermalright Peerless Assassin 120 Digital ultimately comes down to your specific needs and preferences. If you prioritize quiet operation, compact design, and long-term reliability backed by a solid warranty, the Noctua cooler may be worth the extra investment at $74.95. However, if you are looking for a more budget-friendly option with strong performance and appealing aesthetics, the Thermalright model at $45.90 could be the better choice, especially in builds with sufficient space for its larger size. Each cooler has its unique strengths, making either a viable option depending on your priorities.