Thermalright Assassin X 120R Digital ARGB Black CPU Cooler vs Noctua NH-D15S chromax.Black
Updated August 2026 — The Noctua NH-D15S chromax.Black offers superior performance and build quality, making it the better choice for users seeking reliability and efficiency. However, the Thermalright Assassin X 120R is a budget-friendly option with solid features.
The Noctua NH-D15S chromax.Black offers superior performance and build quality, making it the better choice for users seeking reliability and efficiency. However, the Thermalright Assassin X 120R is a budget-friendly option with solid features.
Why Thermalright Assassin X 120R Digital ARGB Black CPU Cooler is better
price
Thermalright is significantly cheaper at C$32.90
size
Thermalright has a more compact design at 151mm height
RGB features
Thermalright includes ARGB lighting for aesthetic appeal
Why Noctua NH-D15S chromax.Black is better
performance
Noctua provides superior cooling performance
noise levels
Noctua operates quieter under load
warranty
Noctua offers a 6-year warranty for peace of mind
Overall score
Specifications
| Spec | Thermalright Assassin X 120R Digital ARGB Black CPU Cooler | Noctua NH-D15S chromax.Black |
|---|---|---|
| Fan Speed | 2000 RPM | PWM controlled |
| Max Noise | ≤ 29.8 dB(A) | whisper quiet |
| Socket Support | Intel/AMD | Intel/AMD |
| Thermal Paste | none specified | NT-H1 included |
| Design Awards | none | 150+ awards |
Dimension comparison
Overview of the Thermalright Assassin X 120R Digital ARGB Black and Noctua NH-D15S chromax.Black
The Thermalright Assassin X 120R Digital ARGB Black is priced at C$32.90, making it a budget-friendly option for those looking for a CPU cooler. In contrast, the Noctua NH-D15S chromax.Black comes in at a significantly higher price of C$149.95, reflecting its premium features and performance. This price difference is a key consideration when deciding between these two CPU coolers.
The Thermalright model offers a compact design with a height of 151mm, suitable for most cases, while the Noctua, at 160mm, also caters to high compatibility but prioritises performance with its dual-tower design. This section sets the stage for a deeper analysis of both products.
Design and Build Quality
In terms of design, the Noctua NH-D15S chromax.Black boasts an all-black aesthetic that fits seamlessly into various colour schemes. Its asymmetrical, single-fan design allows for dual-tower performance while maintaining high compatibility, as it measures 160mm in height and ensures 65mm RAM clearance. This design prevents blockage of the PCIe slot on most ATX and Micro-ATX motherboards.
Conversely, the Thermalright Assassin X 120R features a symmetrical all-aluminum fin structure and a compact size of 120x71x151mm. Its top cover includes a digital screen, enhancing its aesthetic appeal alongside its functional performance. While both coolers have commendable designs, the Noctua's higher-end materials and awards, with more than 150 recognitions from hardware websites, may appeal to users prioritising build quality and aesthetics.
Cooling Performance
Cooling performance is a crucial aspect of any CPU cooler. The Noctua NH-D15S is renowned for its effectiveness, featuring the award-winning NF-A15 140mm fan, which operates quietly at idle and provides full cooling performance under load. It includes a Low-Noise Adaptor and PWM for automatic speed control, ensuring optimal cooling without compromising noise levels.
The Thermalright Assassin X 120R, with a fan speed of 2000 RPM and an air volume of 70.84 CFM, offers competitive cooling performance as well. Its wind pressure of 2.63mm H2O indicates solid heat dissipation capabilities. However, it operates at a maximum noise level of ≤ 29.8 dB(A), which, while reasonably quiet, may not match the ultra-quiet operation of the Noctua model under load.
Compatibility
Compatibility is a strong point for both coolers, albeit with different approaches. The Noctua NH-D15S chromax.Black supports a wide range of Intel and AMD sockets, including LGA1700, AM5, and AM4, making it versatile for various builds. Its SecuFirm2 mounting system simplifies installation, ensuring that users can set it up with ease.
On the other hand, the Thermalright Assassin X 120R is compatible with dual platforms—Intel's 14th and 15th Gen, as well as AMD Ryzen 7000 series. It comes with installation accessories, although it requires the original backplate of the motherboard for AMD installations. Both coolers cater to a broad audience, but Noctua's extensive compatibility may give it an edge for users with diverse setups.
Noise Levels
When considering noise levels, the Noctua NH-D15S excels with its ability to maintain quiet operation, even under load. Its design includes features that promote low noise levels, making it an excellent choice for users who prioritise a quiet computing experience.
In comparison, the Thermalright Assassin X 120R operates at a maximum noise level of ≤ 29.8 dB(A). While this is relatively quiet and suitable for most users, it may not provide the same level of silence as the Noctua under high-stress conditions. For audiophiles or those who work in noise-sensitive environments, the Noctua's performance may be more appealing.
Installation Process
Installation ease can significantly affect user experience. The Noctua NH-D15S comes with a high-end thermal paste and a well-designed mounting system that simplifies the installation process across various platforms, ensuring compatibility with Intel and AMD sockets without hassle.
The Thermalright Assassin X 120R also includes installation accessories, but users must pay attention to its requirement for the original backplate on AMD setups. While both coolers aim for user-friendliness, Noctua's reputation for straightforward installation may make it a more attractive option for some users.
Warranty and Support
Warranty and support can influence long-term satisfaction with a product. The Noctua NH-D15S is backed by a generous 6-year manufacturer's warranty, a testament to the company's confidence in its quality and durability. This extended warranty provides peace of mind, especially for users investing a significant amount of money.
The Thermalright Assassin X 120R does not specify a warranty period, which could raise concerns for potential buyers regarding long-term support and reliability. The warranty and support commitment from Noctua may sway buyers looking for assurance in their investment.
Which should you buy?
The choice between the Thermalright Assassin X 120R Digital ARGB Black and the Noctua NH-D15S chromax.Black ultimately comes down to your specific needs and budget. If you are looking for an affordable cooler that still offers solid performance and aesthetic appeal, the Thermalright model at C$32.90 is a compelling option.
However, if you prioritise premium features, superior cooling performance, and a quieter operation, the Noctua NH-D15S at C$149.95 is worth the investment. Its extensive compatibility, award-winning design, and long warranty provide excellent value for users seeking reliability and efficiency. Ultimately, both coolers have their strengths, catering to different segments of the market.
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