Delta A40 ARGB CPU Cooler vs Thermalright Assassin X 120 SE ARGB CPU Air Cooler
Updated August 2026 — The Delta A40 ARGB CPU Cooler offers better airflow and a lower price, making it a more appealing choice for budget-conscious consumers. However, the Thermalright Assassin X provides quieter operation.
The Delta A40 ARGB CPU Cooler offers better airflow and a lower price, making it a more appealing choice for budget-conscious consumers. However, the Thermalright Assassin X provides quieter operation.
Why Delta A40 ARGB CPU Cooler is better
price
Delta A40 is C$5.00 cheaper
airflow
Delta A40 achieves 73 CFM
aesthetics
Delta A40 features customizable ARGB lighting
Why Thermalright Assassin X 120 SE ARGB CPU Air Cooler is better
noise level
Thermalright Assassin X operates at 25.6 dB(A)
brand reputation
Thermalright has over 20 years of experience
design
Thermalright Assassin X has a robust aluminum heat sink
Overall score
Specifications
| Spec | Delta A40 ARGB CPU Cooler | Thermalright Assassin X 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Power Dissipation | 220W | 225W |
| Airflow | 73 CFM | 66.17 CFM |
| Noise Level | 29 dB(A) | 25.6 dB(A) |
| Compatibility | Intel & AMD | Intel & AMD |
| Fan Type | PWM Silent | PWM |
Dimension comparison
Price Comparison
The Delta A40 ARGB CPU Cooler is priced at C$19.29, while the Thermalright Assassin X 120 SE ARGB CPU Air Cooler costs C$24.29. This puts the Delta A40 at C$5.00 lower than its competitor. This difference in pricing may appeal to budget-conscious consumers looking for effective cooling solutions without overspending. Both coolers offer competitive performance, but the Delta A40 provides a more affordable option for users who want to save some money while enhancing their CPU cooling.
Performance Metrics
The Delta A40 boasts a powerful performance capability supporting up to 220W power dissipation, making it suitable for high-load tasks like gaming and creative work. In comparison, the Thermalright Assassin X has a thermal design power (TDP) range of 125 to 225W. This means both coolers can handle substantial workloads, but the Delta A40 has a slightly higher upper limit. When it comes to airflow, the Delta A40 achieves 73 CFM with a maximum noise level of 29 dB(A), while the Thermalright Assassin X provides 66.17 CFM with a quieter noise level of 25.6 dB(A). This indicates that while both products are efficient, the Delta A40 offers higher airflow, potentially translating to better cooling performance.
Design and Aesthetics
In terms of design, the Delta A40 features a distinctive circular element and a mirror-like top, which adds a unique touch to its appearance. It is also designed to reduce wind resistance and noise, contributing to its aesthetic appeal. On the other hand, the Thermalright Assassin X has a robust design with a focus on functionality, featuring a heat sink made of aluminium and a height of 148mm, making it suitable for medium-sized cases. While both coolers are visually appealing, the Delta A40 may attract users looking for a more striking design with its ARGB lighting effects, which can be easily customized.
Fan Technology
The Delta A40 comes equipped with a 120mm PWM silent cooling fan capable of operating at speeds of 500-2000 RPM and achieving an airflow of 73 CFM. This fan is designed for efficient performance while maintaining low noise levels. Conversely, the Thermalright Assassin X is equipped with a standard 120mm PWM fan that operates at a maximum speed of 1550 RPM, delivering an airflow of 66.17 CFM. The lower RPM and airflow indicate that while both fans are effective, the Delta A40’s fan may provide better cooling performance due to its higher maximum speed and airflow capacity.
Installation and Compatibility
Both the Delta A40 and Thermalright Assassin X are designed for ease of installation and compatibility with various platforms. The Delta A40 includes all-metal mounting hardware, supporting both Intel and AMD mainstream platforms, including Intel LGA 115X/1200/1700/1851 and AMD AM4/AM. The Thermalright Assassin X also supports a range of sockets, including Intel 115X/1200/1700 and AMD AM4, with corresponding mounting plates provided. This ensures that users can easily install either cooler on their systems without compatibility issues.
Cooling Efficiency
When it comes to cooling efficiency, the Delta A40 has an edge with its ability to handle power dissipation up to 220W. This is particularly beneficial for users engaged in demanding tasks. The Thermalright Assassin X, while offering a respectable TDP of up to 225W, also features the AGHP technique, which helps mitigate the inverse gravity effect in different orientations. This technology ensures reliable cooling performance regardless of the cooler's position. Both coolers are designed for high efficiency, but the Delta A40’s slightly higher power dissipation capability gives it an advantage for extreme cooling scenarios.
Noise Levels
In terms of noise levels, the Thermalright Assassin X operates at a maximum of 25.6 dB(A), making it quieter than the Delta A40, which has a noise level of up to 29 dB(A). This difference may be significant for users who prioritize a silent working environment. The Delta A40, while slightly noisier, compensates with higher airflow. Ultimately, users will need to decide whether they prefer higher airflow at a slightly increased noise level or a quieter operation with slightly reduced airflow.
Which should you buy?
Choosing between the Delta A40 ARGB CPU Cooler and the Thermalright Assassin X 120 SE ARGB CPU Air Cooler ultimately depends on your specific needs and preferences. If you're looking for a cost-effective solution with superior airflow and striking aesthetics, the Delta A40 at C$19.29 is the better choice. However, if you prefer a quieter operation with proven reliability and a well-established brand reputation, the Thermalright Assassin X at C$24.29 may be worth the extra investment. Both coolers deliver solid performance, but your decision should hinge on your priorities regarding price, noise levels, and design aesthetics.
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