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Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi vs Noctua NH-D9L

Updated August 2026The Thermalright Assassin X 120R offers advanced features at a budget price, while the Noctua NH-D9L excels in compact design and quiet operation. Choose based on your specific needs.

The Thermalright Assassin X 120R offers advanced features at a budget price, while the Noctua NH-D9L excels in compact design and quiet operation. Choose based on your specific needs.

Why Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi is better

lower price

Thermalright Assassin X 120R costs C$28.39

digital display

features a digital screen for monitoring

higher fan speed

2000RPM fan for potentially better cooling

Why Noctua NH-D9L is better

compact design

only 110mm tall for small builds

quieter operation

includes Low-Noise Adapter for silent running

ease of installation

SecuFirm2 mounting system simplifies setup

Overall score

Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi
75
Noctua NH-D9L
85

Specifications

SpecThermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPiNoctua NH-D9L
PriceC$28.39C$69.95
Fan Speed2000RPMN/A
Noise LevelN/Aultra-quiet
CompatibilityIntel & AMDIntel & AMD
WarrantyN/A6 years

Dimension comparison

Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPiNoctua NH-D9L

Overview of the Thermalright Assassin X 120R and Noctua NH-D9L

When comparing the Thermalright Assassin X 120R and the Noctua NH-D9L, one can immediately see that they cater to different user requirements and form factors. The Thermalright Assassin X 120R is priced at C$28.39, making it a budget-friendly option that boasts advanced features like a digital screen and a high-speed fan. In contrast, the Noctua NH-D9L comes with a higher price tag of C$69.95, reflecting its compact design and renowned performance, particularly in small form factor builds.

Design and Build Quality

The Thermalright Assassin X 120R features a single tower design with a digital screen top cover, which is not only functional but also adds an aesthetic touch. The design includes four heat pipes that enhance heat dissipation effectiveness. On the other hand, the Noctua NH-D9L adopts a compact dual-tower design that stands at only 110mm tall, making it ideal for tight spaces like HTPCs and small form factor builds. This thoughtful design ensures that it does not overhang the RAM or PCIe slots on most current motherboards, which can be a crucial factor for many users.

Cooling Performance

The Thermalright Assassin X 120R boasts a robust cooling performance driven by its 2000RPM PWM fan. This allows the cooler to adapt its speed based on the motherboard’s temperature, ensuring efficient heat dissipation. Conversely, the Noctua NH-D9L comes equipped with a highly optimised NF-A9 92mm fan, also featuring PWM support, which aids in delivering an ultra-quiet operation. While both coolers excel in their cooling capabilities, the Assassin X 120R's higher fan speed may provide a slight edge in intensive tasks.

Noise Levels

Noise level is a significant consideration for users seeking a quieter system. The Thermalright Assassin X 120R includes silicone corner pads around the fan to reduce noise during operation, though specific decibel levels are not provided. The Noctua NH-D9L, on the other hand, offers a Low-Noise Adapter to ensure that the fan runs quietly, making it a great option for users who prioritise a silent computing environment. Given that both products are designed with noise reduction in mind, the NH-D9L may appeal more to silence-conscious users.

Installation and Compatibility

The installation process for both coolers is designed to be user-friendly. The Thermalright Assassin X 120R supports a wide range of platforms, including various Intel and AMD sockets. It also features a digital screen that displays real-time data, which adds a layer of complexity to the installation but enhances functionality. In comparison, the Noctua NH-D9L comes with the SecuFirm2 mounting system, which simplifies installation on multiple Intel and AMD platforms. The efficient mounting system and compatibility with a range of sockets make the NH-D9L particularly appealing for users looking for an easy setup.

Aesthetic Appeal

Aesthetic considerations can be important for PC builders who want their systems to look as good as they perform. The Thermalright Assassin X 120R features a digital screen that not only displays vital system information but also enhances its visual appeal with RGB lighting. This feature can be particularly attractive for gamers and enthusiasts who want to showcase their builds. In contrast, the Noctua NH-D9L maintains a more utilitarian appearance, focusing on functionality over flashy design. While it may lack the visual flair of the Assassin X 120R, Noctua's reputation for quality craftsmanship may sway users towards its more subdued aesthetics.

Price Comparison

Price is a significant differentiating factor in this comparison. The Thermalright Assassin X 120R is available for C$28.39, making it an accessible option for budget-conscious consumers. In contrast, the Noctua NH-D9L is priced at C$69.95, reflecting its premium quality and performance. While both products offer value in their respective price ranges, the considerable difference in cost may influence the decision for many buyers, especially those on a tight budget.

Which should you buy?

Choosing between the Thermalright Assassin X 120R and the Noctua NH-D9L ultimately depends on your specific needs and preferences. If you are looking for a budget-friendly cooler with advanced features like a digital display and high cooling performance, the Thermalright Assassin X 120R is an excellent choice. However, if you prioritise compactness, ease of installation, and a quieter operation, the Noctua NH-D9L stands out as a premium option, albeit at a higher price point. Each cooler has its strengths, making either a viable choice based on individual requirements.

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Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi vs Noctua NH-D9L | versusfinder