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Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for vs Thermalright Assassin X 120R Digital ARGB Black

Updated August 2026 — Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for wins on installation eas and compatibility, Thermalright Assassin X 120R Digital ARGB Black wins on aesthetics and cooling performa.

The Noctua NM-AM5/4-MP83 is a reliable mounting kit, while the Thermalright Assassin X 120R offers comprehensive cooling performance and features. Choose based on your specific needs.

Why Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for is better

Price

Noctua kit is significantly cheaper

Installation

Easier installation process

Compatibility

Designed specifically for Noctua coolers

Why Thermalright Assassin X 120R Digital ARGB Black is better

Cooling

Superior cooling performance with 2000 RPM fan

Features

Includes ARGB lighting and digital screen

Versatility

Compatible with Intel sockets as well

Overall score

Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for
75
Thermalright Assassin X 120R Digital ARGB Black
88

Specifications

SpecNoctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit forThermalright Assassin X 120R Digital ARGB Black
TypeMounting KitCPU Cooler
Socket CompatibilityAM4/AM5AM4/AM5, Intel
Fan TypeN/APWM Fan
Price$9.95$22.90
InstallationEasyModerate

Dimension comparison

Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit forThermalright Assassin X 120R Digital ARGB Black

Overview of the Products

In this comparison, we will examine the Noctua NM-AM5/4-MP83 SecuFirm2 Mounting Kit and the Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler. The Noctua kit is priced at $9.95, while the Thermalright cooler retails for $22.90, making it about 130% more expensive than the Noctua product. Both products are designed for AMD’s AM4 and AM5 sockets, but they serve different purposes within the CPU cooling ecosystem.

Design and Build Quality

The Noctua NM-AM5/4-MP83 is specifically designed as a mounting upgrade kit, ensuring compatibility with Noctua CPU coolers and AMD sockets. It utilizes the motherboard’s stock AMD backplate for installation, which simplifies the setup process. This kit is renowned for its reliability and optimal contact pressure during installation. In contrast, the Thermalright Assassin X 120R features a more complex design with a height of 151mm and includes a digital screen top cover, enhancing both aesthetics and functionality. Its 2000 RPM PWM fan offers adjustable speeds based on the motherboard temperature, showcasing a blend of design and performance.

Cooling Performance

When it comes to cooling performance, the Thermalright Assassin X 120R stands out with its four heat pipes and a powerful 2000 RPM fan. This configuration allows for efficient heat dissipation, maintaining optimal CPU temperatures even under load. The Noctua NM-AM5/4-MP83, however, does not provide cooling on its own, as it is merely a mounting kit for existing coolers. Thus, if you're looking for effective cooling performance, the Thermalright option is the clear choice, while the Noctua kit is essential for those who already own compatible Noctua coolers.

Compatibility

Both products are designed for AMD's AM4 and AM5 sockets, making them compatible with a range of Ryzen processors. The Noctua NM-AM5/4-MP83 focuses on ensuring that Noctua coolers can be installed effectively on these sockets, using the existing motherboard backplate. On the other hand, the Thermalright Assassin X 120R not only supports AMD sockets but also accommodates various Intel socket types, including LGA1700 and LGA1151. This broader compatibility could make the Thermalright cooler a more versatile option for users with different setups.

Noise Levels

The Thermalright Assassin X 120R is equipped with features designed to minimize noise, including silicone corner pads that help reduce noise from fan vibrations. However, the specifics of its noise output in decibels are not provided, making it difficult to quantify its performance in this area. Conversely, the Noctua NM-AM5/4-MP83 does not have a noise level rating since it is not a cooling unit itself. Users seeking a quieter operation might lean towards the Thermalright cooler, which is built to address noise concerns, especially at higher fan speeds.

Price and Value

The Noctua NM-AM5/4-MP83 is priced at $9.95, presenting an economical solution for those who need a mounting kit for compatible Noctua coolers. The Thermalright Assassin X 120R, at $22.90, is about 130% more expensive. While the Noctua kit provides essential mounting capabilities, the Thermalright cooler offers comprehensive cooling solutions along with additional features such as ARGB lighting and a digital screen. Depending on what you need—basic installation support or full cooling functionality—the value proposition differs significantly between the two.

User Experience

The Noctua NM-AM5/4-MP83 is praised for its straightforward installation process, allowing users to quickly and easily mount their Noctua coolers on the latest AMD sockets. Its design emphasizes reliability and optimal contact pressure, ensuring that users can trust its performance. In contrast, the Thermalright Assassin X 120R, with its digital ARGB features and high-performance fan, may appeal more to users looking for both aesthetics and functionality. However, the complexity of its installation may be slightly higher due to the additional components involved.

Which should you buy?

Deciding between the Noctua NM-AM5/4-MP83 SecuFirm2 Mounting Kit and the Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler depends heavily on your specific needs. If you already own a compatible Noctua cooler and need a reliable mounting solution, the Noctua kit is an excellent choice at just $9.95. However, if you are in the market for a complete cooling solution with advanced features and performance capabilities, the Thermalright cooler is worth the investment at $22.90. Ultimately, your selection should align with whether you prioritize fundamental mounting support or comprehensive cooling performance and aesthetics.