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Gamma A40 ARGB BK CPU Cooler vs Thermalright Assassin King 120 SE ARGB CPU Air Cooler

Updated August 2026The Thermalright Assassin King 120 SE offers superior cooling performance and a broader TDP range at a lower price, making it the better choice for performance-oriented users.

The Thermalright Assassin King 120 SE offers superior cooling performance and a broader TDP range at a lower price, making it the better choice for performance-oriented users.

Why Gamma A40 ARGB BK CPU Cooler is better

compact design

Gamma A40 has a height of 133mm, making it suitable for smaller cases.

aesthetic appeal

Gamma A40 features a unique top cover design.

easy installation

Gamma A40 promotes straightforward installation for users.

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

cooling performance

Assassin King supports a TDP range of 125 to 235W.

fan size

Assassin King uses a larger 120mm fan for better airflow.

price value

Assassin King is priced lower while offering better specs.

Overall score

Gamma A40 ARGB BK CPU Cooler
70
Thermalright Assassin King 120 SE ARGB CPU Air Cooler
85

Specifications

SpecGamma A40 ARGB BK CPU CoolerThermalright Assassin King 120 SE ARGB CPU Air Cooler
BrandOcypusThermalright
Current PriceC$29.09C$24.59
Cooling TDP200W125-235W
Fan SpeedN/A1550rpm
Noise LevelN/A≤25.6dB(A)

Dimension comparison

Gamma A40 ARGB BK CPU CoolerThermalright Assassin King 120 SE ARGB CPU Air Cooler

Introduction to CPU Coolers

When it comes to cooling your CPU, choosing the right cooler can significantly impact performance and system stability. In this comparison, we will evaluate the Gamma A40 ARGB BK CPU Cooler and the Thermalright Assassin King 120 SE ARGB CPU Air Cooler. Both coolers are tailored for different needs, with varying features and price points, making them contenders in the CPU cooler market.

Design and Build Quality

The design of a CPU cooler is crucial not only for aesthetics but also for compatibility and performance. The Gamma A40 boasts a compact height of 133mm, making it suitable for various cases without sacrificing cooling capabilities. On the other hand, the Thermalright Assassin King 120 SE features a slightly taller design at 148mm, which may limit its compatibility with smaller cases but offers robust cooling performance. Both coolers are designed to support Intel and AMD platforms, providing versatility across different systems.

Cooling Performance

Cooling efficiency is a critical aspect of any CPU cooler. The Gamma A40 supports up to 200W TDP, which is impressive for its size, ensuring that it can handle mid-range to high-end CPUs effectively. In contrast, the Thermalright Assassin King 120 SE has a broader TDP range of 125 to 235W, making it suitable for even more powerful processors. This higher TDP rating suggests that the Assassin King may provide superior cooling performance under heavy loads, making it a better option for overclockers or users with demanding applications.

Fan Technology

Both coolers employ high-performance fans to ensure optimal cooling. The Gamma A40 features a 100mm fan, which is noted for better performance compared to standard compact cooler fans. Meanwhile, the Thermalright Assassin King is equipped with a standard size 120mm PWM fan that operates at a speed of 1550rpm. This larger fan not only enhances airflow but also maintains a noise level of ≤25.6dB(A), ensuring a quieter operation. The combination of size and technology in the Assassin King may lead to quieter and more efficient cooling when compared to the Gamma A40.

Aesthetics and RGB Features

Aesthetics can play a significant role in your choice of CPU cooler, especially for builds with transparent cases. The Gamma A40 comes with a brand-new top cover featuring classic round dot matrix elements, enhancing its visual appeal. The Thermalright Assassin King 120 SE also features colourful ARGB lighting effects, allowing users to customize their build's look further. While both coolers offer aesthetic enhancements, the Assassin King's ARGB lighting may provide a more vibrant and dynamic visual experience.

Installation Process

Ease of installation is essential for both novice and experienced builders. The Gamma A40 promotes easy installation and supports mainstream platforms from both Intel and AMD. Similarly, the Thermalright Assassin King includes metal fasteners tailored for Intel and AMD platforms, ensuring a secure fit. Both coolers are designed to simplify the installation process, making them accessible to a wide range of users. However, the additional mounting options with the Assassin King may offer a slight edge in flexibility.

Price Comparison

When it comes to price, the Gamma A40 is listed at C$29.09, while the Thermalright Assassin King is slightly more affordable at C$24.59. This price difference of C$4.50 may not seem significant, but it could influence buyers on a budget. The Thermalright Assassin King offers a broader TDP range and potentially better cooling performance at a lower price, making it an appealing choice for those looking to maximize value.

Brand Reputation and Support

Brand reputation can influence consumer trust and product selection. Ocypus, the brand behind the Gamma A40, is relatively newer compared to Thermalright, which has over 20 years of experience in the market. Thermalright has established itself as a reputable brand known for its quality and performance, which may give it an edge in consumer confidence. Buyers may feel more assured when investing in a product from a brand with a long-standing presence in the cooling sector.

Which should you buy?

Choosing between the Gamma A40 ARGB BK CPU Cooler and the Thermalright Assassin King 120 SE ARGB CPU Air Cooler ultimately depends on your specific needs. If you prioritise a compact design and aesthetic appeal without breaking the bank, the Gamma A40 may be the right choice for you. However, if you're looking for superior cooling performance, a wider TDP range, and a more established brand reputation at a lower price, the Thermalright Assassin King stands out as the better option. Weighing the cooling capabilities against the price, the Thermalright Assassin King 120 SE is likely the smarter buy for performance-oriented users.

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