Noctua NM-i17xx-MP78 vs Thermalright Assassin King 120 SE ARGB CPU Air Cooler
Updated August 2026 — The Thermalright Assassin King 120 SE ARGB offers a complete cooling solution with better performance and aesthetics, while the Noctua NM-i17xx-MP78 is a cost-effective mounting upgrade for existing Noctua coolers.
The Thermalright Assassin King 120 SE ARGB offers a complete cooling solution with better performance and aesthetics, while the Noctua NM-i17xx-MP78 is a cost-effective mounting upgrade for existing Noctua coolers.
Why Noctua NM-i17xx-MP78 is better
price
Noctua NM-i17xx-MP78 is cheaper at C$12.95
installation
Noctua NM-i17xx-MP78 has a straightforward installation process
specificity
Noctua NM-i17xx-MP78 is tailored for Noctua coolers
Why Thermalright Assassin King 120 SE ARGB CPU Air Cooler is better
performance
Thermalright Assassin King 120 SE ARGB handles TDP up to 235W
compatibility
Thermalright supports multiple Intel and AMD sockets
aesthetics
Thermalright features vibrant ARGB lighting effects
Overall score
Specifications
| Spec | Noctua NM-i17xx-MP78 | Thermalright Assassin King 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Price | C$12.95 | C$24.59 |
| Socket Support | LGA1851, LGA1700 | LGA115X, LGA1200, LGA1700, AM4, AM5 |
| TDP Rating | N/A | 125 to 235W |
| Fan Speed | N/A | 1550 RPM |
| Airflow | N/A | 66.17 CFM |
Dimension comparison
Overview of the Noctua NM-i17xx-MP78
The Noctua NM-i17xx-MP78 is designed as a mounting upgrade kit specifically for Noctua CPU coolers. Priced at C$12.95, it offers a cost-effective solution for users looking to install compatible coolers on Intel's LGA1851 and LGA1700 sockets. This product features a tailor-made backplate with fixed struts, ensuring outstanding reliability and optimal contact pressure. Additionally, its straightforward installation process allows for the cooler to be installed at a 90° angle if space permits. This versatility makes it a great choice for those upgrading their cooling systems without needing a complete new cooler.
Overview of the Thermalright Assassin King 120 SE ARGB
The Thermalright Assassin King 120 SE ARGB CPU Air Cooler is a more comprehensive cooling solution, priced at C$24.59. This cooler features a 120mm PWM fan that operates at a maximum speed of 1550 RPM, delivering an airflow of 66.17 CFM while maintaining a noise level of only 25.6 dB(A). It incorporates advanced AGHP III technology, designed to counteract the inverse gravity effect caused by orientation. With a TDP rating of 125 to 235W and compatibility with both Intel and AMD platforms, this cooler is well-suited for a wide range of builds, making it a strong contender for effective CPU cooling.
Compatibility Considerations
When it comes to compatibility, the Noctua NM-i17xx-MP78 is specifically tailored for Intel’s LGA1851 and LGA1700 sockets. It is an upgrade kit for users who already possess Noctua coolers and want to adapt them for newer Intel processors. In contrast, the Thermalright Assassin King 120 SE ARGB offers broader compatibility, supporting Intel sockets 115X, 1200, 1700, and 17XX, as well as AMD sockets AM4 and AM5. This versatility allows it to cater to a wider audience, making it a more flexible choice for users building or upgrading their systems across different platforms.
Performance and Cooling Efficiency
In terms of performance, the Thermalright Assassin King 120 SE ARGB stands out with its ability to handle a TDP of up to 235W. This is significantly higher than typical cooling requirements, ensuring excellent thermal management for high-performance CPUs. The combination of a 120mm fan and AGHP technology enhances its cooling efficiency, making it suitable for demanding applications. The Noctua NM-i17xx-MP78, however, is not a cooler itself but rather a mounting kit, meaning its performance is entirely dependent on the Noctua cooler it supports. Therefore, while the NM-i17xx-MP78 facilitates installation, it lacks direct performance metrics.
Noise Levels and User Experience
Noise levels are an important factor in cooling solutions, especially for users seeking a quiet computing environment. The Thermalright Assassin King 120 SE ARGB operates at a maximum noise level of 25.6 dB(A), which is relatively quiet for a cooling solution capable of high airflow. This feature makes it appealing for gamers and PC builders who prefer a silent operation. The Noctua NM-i17xx-MP78 does not provide a noise rating since it is a mounting kit rather than a cooling unit. Thus, while it may support quieter Noctua coolers, any noise considerations would depend on the specific cooler used with the kit.
Installation Process
The installation of the Noctua NM-i17xx-MP78 is designed to be straightforward, with a dedicated backplate and fixed struts that enhance reliability. This ease of installation is a significant advantage for users who may not be as experienced in PC building. Conversely, the Thermalright Assassin King 120 SE ARGB, while also aimed at user-friendliness, comes with a more involved process due to its size and the need for proper mounting across various socket types. Users may need to consider their comfort level with installation when choosing between these products.
Aesthetic Appeal
Aesthetics can play a vital role in a PC build, and the Thermalright Assassin King 120 SE ARGB features vibrant ARGB lighting effects, making it visually appealing for users who want their builds to stand out. With its sleek design and customizable lighting, it adds a modern touch to any setup. The Noctua NM-i17xx-MP78, on the other hand, does not include any aesthetic features, focusing purely on functionality as a mounting kit. Consequently, users prioritizing visual flair may prefer the Thermalright cooler, while those looking solely for a functional upgrade may opt for the Noctua solution.
Which should you buy?
Choosing between the Noctua NM-i17xx-MP78 and the Thermalright Assassin King 120 SE ARGB ultimately depends on your specific needs. If you already have a compatible Noctua cooler and require a mounting upgrade for newer Intel processors, the Noctua kit at C$12.95 is an economical choice. However, if you are looking for a complete cooling solution with effective performance, broad compatibility, and additional aesthetic features, the Thermalright Assassin King 120 SE ARGB at C$24.59 would be the better investment. Consider your current setup, budget, and requirements to make the best decision for your cooling needs.
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