Thermalright Assassin X 120 V2 Plus CPU Cooler 4 Heat Pipes with AGHP Technology vs Noctua NH-D9L
Updated August 2026 — The Noctua NH-D9L offers superior performance and quiet operation, justifying its higher price. The Thermalright Assassin X 120 V2 Plus is a solid budget option.
The Noctua NH-D9L offers superior performance and quiet operation, justifying its higher price. The Thermalright Assassin X 120 V2 Plus is a solid budget option.
Why Thermalright Assassin X 120 V2 Plus CPU Cooler 4 Heat Pipes with AGHP Technology is better
lower price
C$25.90 vs C$69.95
wider compatibility
supports more CPU sockets
larger size
better for spacious cases
Why Noctua NH-D9L is better
quiet operation
ultra-quiet performance with Low-Noise Adaptor
compact design
ideal for small form factor builds
long warranty
6-year manufacturer’s warranty
Overall score
Specifications
| Spec | Thermalright Assassin X 120 V2 Plus CPU Cooler 4 Heat Pipes with AGHP Technology | Noctua NH-D9L |
|---|---|---|
| Cooling Type | Air | Air |
| Socket Support | Intel/AMD | Intel/AMD |
| Fan Control | No | Yes |
| Material | Aluminum | Copper/Aluminum |
| Installation Ease | Moderate | Easy |
Dimension comparison
Overview of Thermalright Assassin X 120 V2 Plus and Noctua NH-D9L
The Thermalright Assassin X 120 V2 Plus and Noctua NH-D9L are two prominent CPU coolers, each targeting different user needs. The Thermalright model is priced at C$25.90, while the Noctua cooler comes in at a significantly higher C$69.95. This price difference suggests that each cooler may offer distinct features and performance levels catering to varying preferences in cooling efficiency and system compatibility.
Thermalright has been a notable player in the cooling market for over 20 years, emphasizing innovation and quality in their products. In contrast, Noctua is renowned for its reliable performance, compact design, and exceptional build quality. Understanding the differences in design, cooling performance, and installation ease is essential when choosing between these two options.
Design and Build Quality
The Thermalright Assassin X 120 V2 Plus is designed with four heat pipes and AGHP technology, which enhances its cooling capability. Its dimensions of 120(L)x96(W)x154(H)mm make it a robust option for various builds. On the other hand, the Noctua NH-D9L features a compact dual-tower design with a height of just 110mm, making it ideal for small form factor cases, such as HTPCs and ITX builds.
While the Thermalright cooler is larger, it may be more suited for users with ample case space who prioritize performance. The Noctua’s smaller design allows for excellent compatibility with RAM and PCIe slots, making it a versatile choice for tighter builds. This difference in size could be pivotal for users with specific case requirements.
Cooling Performance
In terms of cooling performance, the Thermalright Assassin X 120 V2 Plus utilizes its four heat pipes to effectively manage heat dissipation. The use of aluminum in its heat sink construction contributes to its overall cooling efficiency. The Noctua NH-D9L, however, is equipped with a highly optimised NF-A9 92mm fan that offers PWM support, ensuring automatic speed control for ultra-quiet operation while maintaining effective cooling capabilities.
The Thermalright cooler’s AGHP technique is designed to mitigate the inverse gravity effect during various orientations, providing consistent cooling performance regardless of how it is installed. On the other hand, Noctua’s reputation for quiet operation is supported by its Low-Noise Adaptor, making it an excellent choice for users who prioritise low noise levels alongside cooling performance.
Compatibility and Installation
When considering compatibility, the Thermalright Assassin X 120 V2 Plus supports a wide range of CPU sockets, including Intel’s LGA1150 through LGA1700 and AMD’s AM4 and AM5. This makes it a highly versatile option for various builds. The installation process is facilitated by the inclusion of metal fasteners designed for both Intel and AMD platforms.
The Noctua NH-D9L also boasts broad compatibility, supporting Intel’s LGA115x and LGA1700 as well as AMD’s AM4 and AM5 sockets. It comes with a SecuFirm2 mounting system that simplifies installation, making it user-friendly even for those with minimal experience. The ease of installation with the Noctua cooler is a highlight, particularly for users looking for a straightforward setup.
Noise Levels
Noise levels are a significant consideration for many PC builders, especially in home or office environments. The Thermalright Assassin X 120 V2 Plus is designed with S-FDB bearings that minimize fan noise. While specific dB levels are not mentioned, its design aims to keep noise to a minimum during operation.
Conversely, the Noctua NH-D9L is particularly noted for its ultra-quiet performance, thanks to its PWM fan and Low-Noise Adaptor. This model is designed to operate with minimal sound, making it an excellent choice for users who desire a peaceful computing experience. The emphasis on noise reduction in the NH-D9L further enhances its appeal for those building silent systems.
Warranty and Support
Thermalright provides a basic warranty, but specific terms are not detailed in the available information. In contrast, the Noctua NH-D9L is backed by a six-year manufacturer’s warranty, reflecting the brand's confidence in its product quality. This extensive warranty can provide peace of mind for users, ensuring support in case of defects or issues.
The assurance of long-term support speaks volumes about Noctua’s commitment to quality. Users may find this aspect particularly crucial when investing in a higher-priced cooler like the NH-D9L, as it indicates a lasting relationship with the manufacturer.
Price Comparison
The price difference between the two coolers is significant, with the Thermalright Assassin X 120 V2 Plus retailing at C$25.90, while the Noctua NH-D9L is priced at C$69.95. This C$44.05 difference raises questions about the value each cooler offers relative to its cost.
While the Thermalright cooler is more affordable and offers good performance, the Noctua cooler’s higher price reflects its advanced features, including superior noise control and a longer warranty. Users must weigh their budget against the specific performance and features they seek in a CPU cooler.
Which should you buy?
Choosing between the Thermalright Assassin X 120 V2 Plus and the Noctua NH-D9L ultimately depends on your specific needs and preferences. If you are looking for a budget-friendly option that provides solid cooling performance and compatibility, the Thermalright cooler is a commendable choice. However, if you prioritise quiet operation, compact design, and long-term reliability, the Noctua NH-D9L justifies its higher price with exceptional features and a robust warranty. Assessing your build requirements and personal preferences will guide you to the right cooler for your system.
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