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Thermalright Assassin X 120R Digital ARGB Black CPU Cooler vs Delta A40 ARGB CPU Cooler

Updated August 2026The Thermalright Assassin X 120R offers superior performance and aesthetics, while the Delta A40 is a budget-friendly option with solid capabilities.

The Thermalright Assassin X 120R offers superior performance and aesthetics, while the Delta A40 is a budget-friendly option with solid capabilities.

Why Thermalright Assassin X 120R Digital ARGB Black CPU Cooler is better

performance

Higher airflow and wind pressure

design

More modern aesthetic with digital screen

compatibility

Wider support for Intel and AMD sockets

Why Delta A40 ARGB CPU Cooler is better

price

Significantly lower cost

power handling

Supports up to 220W power dissipation

customization

Easier lighting effect adjustments

Overall score

Thermalright Assassin X 120R Digital ARGB Black CPU Cooler
85
Delta A40 ARGB CPU Cooler
70

Specifications

SpecThermalright Assassin X 120R Digital ARGB Black CPU CoolerDelta A40 ARGB CPU Cooler
Airflow70.84 CFM73 CFM
Fan Speed2000 RPM2000 RPM
Wind Pressure2.63 mmH2O4.3 mmH2O
Noise Level≤29.8 dB(A)≤29 dB(A)
Socket SupportIntel LGA 1851/1700/1150/1151/1155/1156/1200; AMD AM4/AM5Intel LGA 115X/1200/1700/1851; AMD AM4/AM5

Dimension comparison

Thermalright Assassin X 120R Digital ARGB Black CPU CoolerDelta A40 ARGB CPU Cooler

Pricing Comparison

The Thermalright Assassin X 120R Digital ARGB Black CPU Cooler is priced at C$32.90, while the Delta A40 ARGB CPU Cooler is significantly more affordable at C$19.29. This price difference of C$13.61 could make a considerable impact for budget-conscious consumers. While both coolers offer competitive features, the Delta A40 provides a more budget-friendly option without sacrificing essential performance metrics, appealing to those who want decent cooling without breaking the bank.

Design and Aesthetics

The Thermalright Assassin X 120R boasts a striking design with a symmetrical all-aluminum fin structure, enhancing both its aesthetic appeal and heat dissipation capabilities. The digital screen on top adds an element of modernity, effectively merging functionality with style. In contrast, the Delta A40's design features circular elements and a mirror-like finish that enhances its visual appeal. While both have ARGB lighting capabilities, the Delta A40 focuses on a more rounded aesthetic, offering customizable lighting effects for a tailored look.

Cooling Performance

In terms of cooling efficiency, the Thermalright Assassin X 120R can deliver an air volume of 70.84 CFM and operates at a fan speed of 2000 RPM, producing a wind pressure of 2.63 mm H2O. This makes it a robust choice for high-performance CPUs. The Delta A40, however, is also impressive, capable of handling up to 220W of power dissipation, which ensures stable operation under high loads. Its airflow is rated at 73 CFM with a maximum air pressure of 4.3 mm H2O, suggesting that it can also deliver solid cooling performance, albeit at a different operational profile.

Noise Levels

When it comes to noise levels, both coolers maintain a similar operational noise rating of ≤29 dB(A). This makes them both relatively quiet options for users who are sensitive to noise. The Thermalright Assassin X 120R benefits from a PWM fan that helps regulate noise levels during operation. The Delta A40 also features a high-performance silent fan, ensuring that users can enjoy efficient cooling without excessive noise. Thus, both products cater well to users looking for low-noise computing environments.

Compatibility

The Thermalright Assassin X 120R offers wide compatibility across multiple Intel and AMD platforms, including support for Intel's LGA 1851, 1700, 1150, and others, as well as AMD’s AM4 and AM5 sockets. This makes it a versatile choice for users who may upgrade their systems in the future. Similarly, the Delta A40 also supports a range of Intel (LGA 115X, 1200, 1700, 1851) and AMD (AM4, AM5) sockets, allowing for broad compatibility. Both coolers provide installation accessories and guidelines, making them accessible for DIY assembly.

Installation Process

Installation is straightforward for both the Thermalright Assassin X 120R and Delta A40. The Assassin X comes with an installation accessory that simplifies the process, while the Delta A40 features all-metal mounting hardware. This ensures that both coolers can be easily installed on various platforms, catering to both novice and experienced builders. Users can follow included manuals or installation videos for support, making the assembly process less daunting for those new to CPU cooling solutions.

Customization Options

The Thermalright Assassin X 120R allows for ARGB light synchronization with a 5V 3-pin motherboard connection, enabling users to create a dynamic lighting experience that complements their build. The digital screen provides additional customization options through TRCC software, which adds a layer of interactivity. On the other hand, the Delta A40 also supports ARGB functionality, with customizable lighting effects adjustable via control software. Both products offer significant scope for personalization, appealing to gamers and PC builders who prioritise aesthetics alongside performance.

Which should you buy?

Choosing between the Thermalright Assassin X 120R Digital ARGB Black CPU Cooler and the Delta A40 ARGB CPU Cooler ultimately depends on your specific needs and budget. If you are looking for a cooler that combines high performance, aesthetic appeal, and extensive compatibility, the Thermalright Assassin X may be the better choice despite its higher price. However, if affordability and solid performance under high loads are your primary concerns, the Delta A40 presents an enticing option at a significantly lower price point. Both coolers have their strengths, so weigh your priorities carefully before making your decision.

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Thermalright Assassin X 120R Digital ARGB Black CPU Cooler vs Delta A40 ARGB CPU Cooler | versusfinder