Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for vs Thermalrlght Peerless Assassin 120 SE CPU Air
Updated August 2026 — Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for wins on installation, Thermalrlght Peerless Assassin 120 SE CPU Air wins on cooling and build quality.
The Thermalrlght Peerless Assassin 120 SE offers superior cooling performance and versatility, making it the better choice for comprehensive CPU cooling needs.
Why Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for is better
Price
Noctua kit is significantly cheaper at $9.95.
Simplicity
Noctua kit provides straightforward installation.
Compatibility
Noctua kit is tailored for Noctua coolers.
Why Thermalrlght Peerless Assassin 120 SE CPU Air is better
Cooling
Thermalrlght cooler has superior heat management.
Performance
Thermalrlght features dual fans and six heat pipes.
Versatility
Thermalrlght supports multiple CPU platforms.
Overall score
Specifications
| Spec | Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit for | Thermalrlght Peerless Assassin 120 SE CPU Air |
|---|---|---|
| Price | $9.95 | $32.90 |
| Cooling Type | Mounting Kit | Air Cooler |
| Socket Compatibility | AM5/AM4 | AM4/AM5/Intel |
| Fan Count | 0 | 2 |
| Airflow | N/A | 66.17 CFM |
Dimension comparison
Overview of the Products
When it comes to CPU cooling solutions, the Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit is a mounting upgrade kit, while the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler is a complete cooling unit. The Noctua kit is priced at $9.95, making it quite economical, whereas the Thermalrlght cooler retails for $32.90, which is about 230% more expensive. This price difference highlights the distinct purposes of these products, with the Noctua kit serving as an accessory and the Thermalrlght cooler being a comprehensive solution for heat management.
Design and Build Quality
The design of the Noctua NM-AM5/4-MP83 SecuFirm2 focuses on functionality, allowing for the installation of compatible Noctua CPU coolers on AMD’s AM5 and AM4 sockets. It utilizes the motherboard's stock AMD backplate, ensuring a straightforward installation process. In contrast, the Thermalrlght Peerless Assassin 120 SE boasts an aluminum and copper construction, along with a distinctive anodized brushed black top cover. This cooler incorporates six heat pipes and dual 120mm fans for optimal airflow and heat dissipation. The use of high-quality materials and an innovative design in the Thermalrlght cooler contributes to its robust performance.
Performance and Cooling Efficiency
In terms of cooling performance, the Thermalrlght Peerless Assassin 120 SE is designed for superior heat management. It features six heat pipes and dual high-performance fans, allowing for a rated airflow of 66.17 CFM with a noise level of 25.6 dB(A). This is crucial for maintaining lower CPU temperatures, especially during demanding tasks. On the other hand, the Noctua NM-AM5/4-MP83 does not provide cooling capabilities itself; rather, it enables the use of existing Noctua coolers on new motherboard sockets. Therefore, if cooling performance is your primary concern, the Thermalrlght cooler stands out significantly.
Compatibility with Processors
The Noctua NM-AM5/4-MP83 is specifically tailored for AMD’s AM5 and AM4 sockets, facilitating the use of Noctua coolers with Ryzen 5, 7, and 9 processors. This compatibility is essential for users looking to upgrade their cooling solutions without replacing their entire setup. Conversely, the Thermalrlght Peerless Assassin 120 SE is versatile, supporting both AMD AM4 and AM5 sockets as well as multiple Intel platforms, including LGA 1700 and 1150 series. This wider compatibility makes the Thermalrlght cooler a more flexible choice for those using various CPU brands.
Installation Process
The installation process for the Noctua NM-AM5/4-MP83 is straightforward, leveraging the motherboard’s stock backplate for mounting. This means users can easily upgrade their cooling without needing additional tools or hardware, enhancing convenience. The Thermalrlght Peerless Assassin 120 SE also includes a user-friendly installation system, but it requires checking for compatibility with cases and motherboards to ensure a proper fit. While both products aim for ease of installation, the Noctua kit's reliance on existing hardware may be perceived as an advantage for some users.
Price Comparison
The price point is a significant differentiator between these two products. The Noctua NM-AM5/4-MP83 is priced at $9.95, making it a budget-friendly option for individuals who need a mounting kit. In contrast, the Thermalrlght Peerless Assassin 120 SE is priced at $32.90, which is about 230% higher than the Noctua option. This substantial price difference reflects the additional features and overall cooling capabilities of the Thermalrlght cooler, which may justify the investment for users seeking high-performance cooling solutions.
Brand Reputation and Reliability
Noctua is well-known for its commitment to quality and reliability in the cooling industry. The NM-AM5/4-MP83 is backed by the renowned SecuFirm2 quality, ensuring outstanding reliability and optimal contact pressure. On the other hand, Thermalrlght has established itself as a reputable brand as well, with the Peerless Assassin 120 SE designed to deliver stable performance and better graphics card compatibility. Both brands hold a positive reputation, but Noctua's focus on quality and user satisfaction may give it an edge for those prioritizing reliability.
Which should you buy?
Deciding between the Noctua NM-AM5/4-MP83 SecuFirm2 Mounting-Kit and the Thermalrlght Peerless Assassin 120 SE depends on your specific needs. If you require a budget-friendly mounting solution for existing Noctua coolers, the Noctua kit at $9.95 is a sensible choice. However, for those looking for a comprehensive cooling solution that provides superior performance and versatility across various platforms, the Thermalrlght cooler at $32.90 is the better investment. Ultimately, your choice should align with whether you prioritize a simple mounting solution or extensive cooling capabilities.

