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

Updated August 2026The Thermalright Assassin X 120 SE offers superior cooling performance and a lower price, making it the better choice overall.

The Thermalright Assassin X 120 SE offers superior cooling performance and a lower price, making it the better choice overall.

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

higher TDP

supports up to 225W TDP

lower price

priced at C$24.29

better airflow

66.17 CFM airflow

Why Gamma A40 ARGB BK CPU Cooler is better

compact design

height of 133mm

direct-touch heatpipe

increases contact area

high-performance fan

100mm fan for better performance

Overall score

Thermalright Assassin X 120 SE ARGB CPU Air Cooler
85
Gamma A40 ARGB BK CPU Cooler
75

Specifications

SpecThermalright Assassin X 120 SE ARGB CPU Air CoolerGamma A40 ARGB BK CPU Cooler
BrandThermalrightOcypus
PriceC$24.29C$29.09
Noise Level≤25.6 dB(A)not specified
Fan RPM1550not specified
Socket SupportIntel/AMDIntel/AMD

Dimension comparison

Thermalright Assassin X 120 SE ARGB CPU Air CoolerGamma A40 ARGB BK CPU Cooler

Brand Overview

When comparing the Thermalright Assassin X 120 SE ARGB CPU Air Cooler and the Gamma A40 ARGB BK CPU Cooler, both brands offer solid reputations in the cooling market. Thermalright, a Taiwanese brand, has over 20 years of development experience and has established a strong presence in both domestic and international markets. In contrast, Ocypus, the brand behind the Gamma A40, is newer but also focuses on providing efficient cooling solutions. Both brands aim to cater to gamers and PC enthusiasts looking for reliable cooling performance.

Cooling Performance

In terms of cooling efficiency, the Thermalright Assassin X 120 SE supports a thermal design power (TDP) of 125 to 225W, making it suitable for a wide range of CPUs, from mid-range to high-end. The Gamma A40, on the other hand, supports up to 200W TDP, which is also impressive but slightly lower than what the Thermalright offers. This difference in TDP indicates that while both coolers can handle substantial heat output, the Thermalright may be more versatile for overclockers or users with more demanding processors.

Design and Dimensions

The Thermalright Assassin X 120 SE has a height of 148mm, while the Gamma A40 boasts a compact design with a height of 133mm. This makes the Gamma A40 more versatile for smaller cases, ensuring compatibility without sacrificing performance. The larger height of the Thermalright cooler could be a concern for users with limited space in their PC builds. The design of both coolers is tailored to provide effective airflow, but the compact nature of the Gamma A40 may appeal more to those prioritizing case compatibility.

Fan Performance

Fan performance is crucial for efficient cooling, and both coolers offer notable specifications. The Thermalright features a standard size PWM fan operating at 1550 RPM, producing a maximum airflow of 66.17 CFM with a noise level of ≤25.6 dB(A). In comparison, the Gamma A40 employs a 100mm fan, which is designed to deliver better performance than comparable compact coolers. Although the exact airflow and noise levels for the Gamma A40 are not specified, the focus on a high-performance fan indicates a commitment to minimizing noise while maximizing cooling efficiency.

Installation and Compatibility

Both coolers are designed with user-friendliness in mind, offering easy installation for a variety of CPU socket platforms. The Thermalright Assassin X 120 SE supports Intel sockets 115X, 1200, 1700, and 17XX, as well as AMD's AM4. Similarly, the Gamma A40 supports mainstream Intel and AMD platforms, making both options versatile for different builds. This compatibility ensures that users can easily install either cooler, regardless of their chosen CPU.

Price Comparison

In terms of cost, the Thermalright Assassin X 120 SE is priced at C$24.29, while the Gamma A40 is slightly more expensive at C$29.09. This price difference of C$4.80 could influence a buyer's decision, especially if they are budget-conscious. While both coolers provide good value for their price points, the Thermalright cooler offers a more economical choice without compromising on essential features and performance.

Material and Build Quality

The Thermalright Assassin X 120 SE is constructed with high-quality aluminum and features industrial-grade materials that ensure durability. The cooler is equipped with metal fasteners for both Intel and AMD platforms, enhancing its reliability. The Gamma A40, although not detailed in its material composition, emphasizes a compact design that supports efficient cooling. The focus on a direct-touch heat pipe system in the Gamma A40 also suggests a commitment to maximizing heat transfer efficiency, but the specifics of the materials used remain less transparent compared to the Thermalright.

Which should you buy?

Ultimately, the choice between the Thermalright Assassin X 120 SE ARGB CPU Air Cooler and the Gamma A40 ARGB BK CPU Cooler will depend on your specific needs and preferences. If you're looking for superior cooling capabilities and a slightly lower price, the Thermalright Assassin X 120 SE is the better option, offering a higher TDP capacity and a proven brand reputation. However, if you prioritise compact design and space-saving features, the Gamma A40 may be the right fit for your build, especially if you're working with a smaller case. Both coolers provide solid performance, making either a worthwhile investment for effective CPU cooling.

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