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Noctua NF-A14 PWM vs Thermalright Assassin X 120R Digital ARGB Black

Updated August 2026 — Noctua NF-A14 PWM wins on noise level and ease of install, Thermalright Assassin X 120R Digital ARGB Black wins on aesthetics.

The Noctua NF-A14 PWM excels in quiet operation and versatility, while the Thermalright Assassin X 120R offers aggressive cooling with aesthetic features. Choose based on your specific needs.

Why Noctua NF-A14 PWM is better

Noise Level

Quieter operation at 24.6 dB(A)

Versatility

Suitable for various cooling applications

Build Quality

Premium construction with anti-vibration mounts

Why Thermalright Assassin X 120R Digital ARGB Black is better

Price

Slightly cheaper at $22.90

Cooling Performance

Higher max speed of 2000 RPM

Aesthetics

Digital ARGB lighting for customization

Overall score

Noctua NF-A14 PWM
88
Thermalright Assassin X 120R Digital ARGB Black
82

Specifications

SpecNoctua NF-A14 PWMThermalright Assassin X 120R Digital ARGB Black
Max Noise24.6 dB(A)Not specified
PWM FunctionalityYesYes
CompatibilityVariousAM4/AM5, Intel
Cooling TypeFanAir Cooler
ARGB LightingNoYes

Dimension comparison

Noctua NF-A14 PWMThermalright Assassin X 120R Digital ARGB Black

Overview of the Noctua NF-A14 PWM and Thermalright Assassin X 120R

The Noctua NF-A14 PWM is a premium quiet fan designed for a variety of cooling applications, while the Thermalright Assassin X 120R is a CPU air cooler that combines performance with aesthetic features. The Noctua fan is priced at $24.95, and the Thermalright cooler is slightly cheaper at $22.90, making it about 4% less expensive. Each product serves a different purpose in the cooling ecosystem, appealing to different user needs and preferences.

Design and Build Quality

The Noctua NF-A14 PWM features a square frame design that is ideal for multiple uses such as water cooling radiators, cabinet ventilation, and more. This design allows for optimal airflow and is complemented by its premium build quality. In contrast, the Thermalright Assassin X 120R has a height of 151mm, making it compatible with most cases without compromising on cooling performance. Its digital screen top cover enhances both functionality and aesthetics, giving it a modern look. The differences in design reflect their intended applications, with the Noctua focusing on versatile performance and the Thermalright on CPU cooling with added visual appeal.

Performance Specifications

In terms of performance, the Noctua NF-A14 PWM boasts a maximum speed of 1500 RPM with a noise level of just 24.6 dB(A), offering a quiet cooling solution. The Thermalright Assassin X 120R, on the other hand, features a higher maximum fan speed of 2000 RPM, allowing for more aggressive cooling while still maintaining a quiet operation due to its PWM functionality. The choice between these two will depend on how much cooling performance the user requires and how much noise they can tolerate.

Noise Levels and Acoustic Performance

Noise levels are a key factor in any cooling solution. The Noctua NF-A14 PWM operates at a maximum of 24.6 dB(A), making it one of the quieter options available, ideal for users who prioritize a silent operation. In contrast, while the Thermalright Assassin X 120R does not specify its noise levels directly, its design includes silicone corner pads to minimize noise due to rotation. Users who are particularly sensitive to noise may lean towards the Noctua fan, but those looking for more aggressive cooling without excessive noise might find the Thermalright cooler sufficient.

Installation and Compatibility

The Noctua NF-A14 PWM comes with anti-vibration mounts and accessories that facilitate easy installation, making it user-friendly. Its compatibility with various setups means it can be utilized in multiple scenarios, such as case fans or radiators. The Thermalright Assassin X 120R also emphasizes compatibility, with its height allowing it to fit in most cases and its design catering to both AM4/AM5 and Intel sockets including LGA1700 and LGA1151. This versatility may make the Thermalright cooler a better choice for users upgrading or building systems with specific CPU requirements.

Aesthetic Features

When it comes to aesthetics, the Noctua NF-A14 PWM has a classic brown and beige color scheme that is characteristic of the brand, appealing to users who appreciate a more understated look. In contrast, the Thermalright Assassin X 120R offers digital ARGB lighting, allowing users to synchronize colors with their motherboard’s lighting for a more vibrant appearance. This feature may attract gamers and those who enjoy customizing the appearance of their systems, making it a strong contender for users focused on aesthetics.

Price Consideration

The Noctua NF-A14 PWM is priced at $24.95, while the Thermalright Assassin X 120R is available for $22.90, making the latter about 4% cheaper. This minor price difference may influence budget-conscious consumers, especially considering the competitive options available in the CPU cooling market. However, the decision should also factor in the specific cooling needs and preferences of the user, as they may find that the additional investment in the Noctua fan is justified by its quieter operation and versatile design.

Which should you buy?

Choosing between the Noctua NF-A14 PWM and the Thermalright Assassin X 120R ultimately depends on your specific cooling needs and aesthetic preferences. If you prioritize quiet operation and versatility, the Noctua fan is an excellent choice, particularly for broader applications beyond CPU cooling. However, if you're looking for a more aggressive cooling solution with aesthetic features like ARGB lighting and a slightly lower price point, the Thermalright Assassin X 120R could be the better option. Each has its strengths, and the ideal choice will align with your individual requirements for performance and design.