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Delta A40 ARGB CPU Cooler vs Thermalright Assassin King 120 SE ARGB CPU Air Cooler

Updated August 2026The Delta A40 ARGB CPU Cooler offers better airflow and a lower price, making it a great choice for budget-conscious users. However, the Thermalright Assassin King 120 SE provides quieter operation and slightly higher TDP capacity.

The Delta A40 ARGB CPU Cooler offers better airflow and a lower price, making it a great choice for budget-conscious users. However, the Thermalright Assassin King 120 SE provides quieter operation and slightly higher TDP capacity.

Why Delta A40 ARGB CPU Cooler is better

airflow

Delta A40 has 73 CFM vs Thermalright's 66.17 CFM

price

Delta A40 costs C$19.29 vs Thermalright's C$24.59

design

Delta A40 features a unique circular design

Why Thermalright Assassin King 120 SE ARGB CPU Air Cooler is better

noise level

Thermalright operates at 25.6 dB(A) vs Delta's 29 dB(A)

TDP capacity

Thermalright supports up to 235W vs Delta's 220W

brand reputation

Thermalright has over 20 years of experience

Overall score

Delta A40 ARGB CPU Cooler
85
Thermalright Assassin King 120 SE ARGB CPU Air Cooler
78

Specifications

SpecDelta A40 ARGB CPU CoolerThermalright Assassin King 120 SE ARGB CPU Air Cooler
Airflow73 CFM66.17 CFM
Noise Level29 dB(A)25.6 dB(A)
PriceC$19.29C$24.59
TDP220W235W
ARGB LightingYesYes

Dimension comparison

Delta A40 ARGB CPU CoolerThermalright Assassin King 120 SE ARGB CPU Air Cooler

Overview of the Delta A40 ARGB CPU Cooler

The Delta A40 ARGB CPU Cooler is designed for efficient performance, supporting up to 220W power dissipation. It features customizable ARGB lighting effects, making it not only functional but visually appealing. The cooler is equipped with a 120mm PWM silence cooling fan that balances performance with noise levels, operating at a maximum of 29 dB(A).

This cooler's unique design includes circular elements and refined textures, enhancing both aesthetics and tactile experience. The family fin array design minimizes wind resistance and noise, while its easy assembly process makes it compatible with various Intel and AMD platforms. Priced at C$19.29, it offers a budget-friendly option for gamers and creators looking for reliable cooling solutions.

Overview of the Thermalright Assassin King 120 SE ARGB CPU Air Cooler

The Thermalright Assassin King 120 SE ARGB CPU Air Cooler, priced at C$24.59, is a well-established product from a brand with over 20 years of experience in the market. This cooler supports a TDP of 125 to 235W and is equipped with 5 heat pipes that utilize AGHP III technology, mitigating inverse gravity effects that can occur in various orientations.

The cooler features a 120mm PWM fan that operates at a maximum speed of 1,550 RPM and maintains a low noise level of 25.6 dB(A). Its height of 148mm makes it suitable for medium-sized cases, and it comes with compatibility for both Intel and AMD platforms, ensuring versatile installation options. The ARGB lighting adds a vibrant touch, making it an attractive choice for those looking to enhance their PC aesthetics.

Performance Comparison

In terms of cooling performance, the Delta A40 supports a maximum power dissipation of 220W, which is impressive for demanding tasks such as gaming or video editing. Its fan offers a substantial airflow of 73 CFM, allowing for efficient heat dissipation even under high loads. The noise level of 29 dB(A) is relatively low, ensuring a quieter operation.

On the other hand, the Thermalright Assassin King 120 SE has a slightly higher maximum TDP rating of 235W, which may provide a marginal advantage for overclocked systems. However, its airflow is rated at 66.17 CFM, slightly lower than that of the Delta A40. The fan's quieter operation at 25.6 dB(A) could appeal to users prioritizing a silent experience. Overall, while both coolers excel in performance, the Delta A40 edges ahead in airflow capabilities.

Design and Aesthetics

Aesthetically, the Delta A40 ARGB cooler stands out with its circular design elements and mirror-like surface that catch the eye. The customizable ARGB lighting effects allow users to tailor their cooling solution's appearance to match their build or personal style.

Conversely, the Thermalright Assassin King 120 SE also boasts vibrant ARGB lighting but features a more classic cooler design. Its robust construction with aluminum heat sink material and metal fasteners ensures durability while maintaining a professional look. Both coolers offer appealing designs, but the Delta A40’s unique visual style may attract those looking for something distinctive.

Installation and Compatibility

Both coolers are designed for easy installation and compatibility with a range of CPU sockets. The Delta A40 comes with all-metal mounting hardware, supporting Intel LGA 115X/1200/1700/1851 and AMD AM4/AM5 platforms. This wide compatibility ensures that users can easily integrate it into their current systems.

Similarly, the Thermalright Assassin King 120 SE also caters to a variety of platforms, including Intel 115X/1200/1700/17XX and AMD AM4/AM5 sockets. Its installation process is straightforward, with provided fasteners enhancing user convenience. While both coolers excel in compatibility, the Delta A40’s emphasis on user-friendly assembly may give it a slight edge for first-time builders.

Noise Levels

Noise levels are a crucial factor for many PC builders, especially those seeking a quieter environment. The Delta A40 operates at a maximum noise level of 29 dB(A), which is quite reasonable considering its airflow capabilities. This makes it suitable for both gaming and office environments where noise can be an issue.

In contrast, the Thermalright Assassin King 120 SE operates even quieter at a maximum of 25.6 dB(A). This makes it an appealing choice for users who prioritize silence over performance, especially in compact or noise-sensitive setups. While both coolers are relatively quiet, the Thermalright's lower noise output may be a deciding factor for some users.

Price Consideration

When it comes to pricing, the Delta A40 is more budget-friendly at C$19.29, making it an attractive option for those looking to save money without compromising too much on performance. It provides excellent value given its features and performance capabilities.

On the other hand, the Thermalright Assassin King 120 SE is priced at C$24.59, which reflects its additional features and slightly higher performance ratings. While the price difference is not substantial, budget-conscious consumers may find the Delta A40 to be a better fit for their needs.

Which should you buy?

In conclusion, both the Delta A40 ARGB CPU Cooler and the Thermalright Assassin King 120 SE ARGB CPU Air Cooler offer solid performance and aesthetic appeal. The Delta A40 excels in airflow and price, making it an excellent choice for gamers and budget-conscious builders. However, the Thermalright Assassin King 120 SE provides a quieter operation and slightly higher TDP capacity, catering to users who may need that extra cooling power. Ultimately, your choice should depend on your specific needs—whether you prioritise performance, aesthetics, noise levels, or budget.

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Delta A40 ARGB CPU Cooler vs Thermalright Assassin King 120 SE ARGB CPU Air Cooler | versusfinder