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Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi vs Noctua NH-L9x65 chromax.Black

Updated August 2026The Thermalright Assassin X 120R offers great value and features for budget-conscious users, while the Noctua NH-L9x65 excels in quiet operation and compact design. Choose based on your specific needs.

The Thermalright Assassin X 120R offers great value and features for budget-conscious users, while the Noctua NH-L9x65 excels in quiet operation and compact design. Choose based on your specific needs.

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

price

Thermalright is significantly cheaper at C$28.39.

features

Includes a digital screen for real-time monitoring.

aesthetic

More vibrant design with ARGB lighting.

Why Noctua NH-L9x65 chromax.Black is better

noise

Designed for ultra-quiet operation.

size

Low-profile design fits in compact builds.

reputation

Noctua is known for high-quality cooling solutions.

Overall score

Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi
75
Noctua NH-L9x65 chromax.Black
85

Specifications

SpecThermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPiNoctua NH-L9x65 chromax.Black
Max RPM20001400
Socket CompatibilityIntel/AMDIntel/AMD
Noise Level30 dB20 dB
MaterialPBT+PCAluminum
Warranty2 years6 years

Dimension comparison

Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPiNoctua NH-L9x65 chromax.Black

Overview of the Thermalright Assassin X 120R Digital ARGB White and Noctua NH-L9x65 chromax.Black

In the realm of CPU coolers, the Thermalright Assassin X 120R Digital ARGB White and the Noctua NH-L9x65 chromax.Black stand out as compelling choices, each catering to different user needs. Priced at C$28.39, the Thermalright cooler is a budget-friendly option with advanced features, while the Noctua model is a premium choice at C$101.95, known for its compact design and high performance. Understanding the strengths and weaknesses of each can help you make an informed decision.

Design and Aesthetics

The design of the Thermalright Assassin X 120R is striking, featuring a digital screen top cover that displays real-time CPU and GPU metrics. This unique aspect enhances its appeal for users who appreciate visual feedback on system performance. In contrast, the Noctua NH-L9x65 chromax.Black opts for a more understated approach, showcasing an all-black design that fits seamlessly into many builds, especially in HTPCs and SFF setups. While the Thermalright cooler has a more flashy aesthetic, the Noctua’s minimalistic look is ideal for users prioritizing elegance and simplicity.

Cooling Performance

When it comes to cooling efficiency, the Thermalright Assassin X 120R boasts a high-speed fan reaching up to 2000 RPM. This is paired with advanced AGHP heat pipe technology, which significantly enhances heat dissipation. The Noctua NH-L9x65, on the other hand, features a slim NF-A9x14 fan designed for low noise and effective cooling in compact spaces. While the Thermalright offers higher RPM and potential cooling performance, the Noctua's design is tailored for quieter operation, making it suitable for builds where noise minimization is crucial.

Compatibility

Compatibility is a critical consideration for CPU coolers. The Thermalright Assassin X 120R supports a wide range of platforms, including various Intel and AMD sockets, ensuring versatility for different builds. The Noctua NH-L9x65 also offers broad compatibility, specifically designed for Intel LGA1851, LGA1700, LGA1200, LGA115x, and AMD AM5 & AM4 sockets. However, its low-profile design allows it to fit into smaller cases without obstructing RAM or PCIe slots, a significant advantage for users with compact setups.

Installation Process

Both coolers are designed for user-friendly installation, but they employ different methods. The Thermalright Assassin X 120R utilizes a straightforward mounting system that is compatible with dual platforms, making it accessible for DIY builders. The Noctua NH-L9x65 features the SecuFirm2 mounting system, which is praised for its ease of installation and secure fitting. While both coolers facilitate relatively hassle-free setups, the Noctua's mounting system is often highlighted for its reliability and ease, especially for newcomers to PC building.

Noise Levels

Noise levels can greatly impact the user experience, especially in quiet environments. The Thermalright Assassin X 120R includes silicone corner pads to reduce operational noise, yet its 2000 RPM fan can produce more sound under heavy loads compared to the Noctua NH-L9x65. The Noctua cooler is specifically designed for ultra-quiet operation, featuring a Low-Noise Adapter to automatically control fan speed. For users who prioritize silence, the Noctua may be the preferable choice, especially in noise-sensitive situations.

Price and Value

At C$28.39, the Thermalright Assassin X 120R offers impressive features for its price, making it an excellent value for budget-conscious consumers. The Noctua NH-L9x65, priced at C$101.95, sits in a higher price bracket but is often regarded as a premium product due to its performance and build quality. While the Thermalright presents a more accessible option for general use, the Noctua aims at enthusiasts seeking top-tier efficiency and noise control, justifying its higher cost.

User Feedback and Reputation

The reputation of both brands plays a crucial role in consumer choices. Thermalright is known for delivering solid performance at competitive prices, while Noctua has built a strong following for its high-quality, reliable products that excel in noise reduction and cooling efficiency. Users of the Thermalright Assassin X 120R appreciate its innovative features and value for money, while Noctua NH-L9x65 users often highlight its quiet operation and compatibility with small form factors as key benefits.

Which should you buy?

Choosing between the Thermalright Assassin X 120R Digital ARGB White and the Noctua NH-L9x65 chromax.Black ultimately hinges on your specific needs and build requirements. If budget is a primary concern and you seek a cooler with vibrant aesthetics and good performance, the Thermalright Assassin X 120R is an excellent choice. However, if you prioritize low noise levels, compact design, and premium build quality, the Noctua NH-L9x65 justifies its higher price tag with superior performance in small form factor builds. Each cooler has its merits, making your decision dependent on what features matter most to you.

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Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi vs Noctua NH-L9x65 chromax.Black | versusfinder