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Thermalright Assassin X 120R Digital ARGB Black vs Thermalright PS120SE ARGB CPU Air Cooler, 7 Heat

Updated August 2026 — Thermalright Assassin X 120R Digital ARGB Black wins on aesthetics and cooling performa, Thermalright PS120SE ARGB CPU Air Cooler, 7 Heat wins on noise level.

The Thermalright Assassin X 120R offers better cooling performance and a lower price, while the PS120SE excels in quiet operation and advanced lighting features.

Why Thermalright Assassin X 120R Digital ARGB Black is better

Cooling Performance

Higher RPM and airflow

Price

More affordable at $24.90

Heat Pipes

Fewer heat pipes but effective design

Why Thermalright PS120SE ARGB CPU Air Cooler, 7 Heat is better

Noise Levels

Quieter operation at 25.6 dB(A)

Fan Technology

Dual fan setup for better cooling under load

Lighting Effects

17 ARGB lighting modes

Overall score

Thermalright Assassin X 120R Digital ARGB Black
85
Thermalright PS120SE ARGB CPU Air Cooler, 7 Heat
78

Specifications

SpecThermalright Assassin X 120R Digital ARGB BlackThermalright PS120SE ARGB CPU Air Cooler, 7 Heat
Fan Speed2000 RPM1500 RPM
Heat Pipes47
CompatibilityIntel/AMDIntel/AMD
MaterialAluminumAluminum
ARGB SupportYesYes

Dimension comparison

Thermalright Assassin X 120R Digital ARGB BlackThermalright PS120SE ARGB CPU Air Cooler, 7 Heat

Introduction to CPU Coolers

When it comes to efficiently cooling your CPU, choosing the right cooler is crucial. The Thermalright Assassin X 120R Digital ARGB Black CPU Cooler and the Thermalright PS120SE ARGB CPU Air Cooler represent two compelling options in this category. While both products share a brand, their specifications and features differ significantly, making it essential for consumers to understand what each cooler brings to the table.

Design and Aesthetics

The design elements of these coolers set them apart. The Thermalright Assassin X 120R Digital features a sleek black finish combined with a digital screen top cover that displays real-time CPU and GPU temperatures, enhancing both functionality and aesthetics. In contrast, the Thermalright PS120SE has a more traditional dual-fan setup with an emphasis on ARGB lighting effects, offering up to 17 different lighting modes. While the Assassin X is priced at $24.90, the PS120SE is about 40% more expensive at $34.94. This price difference can be attributed to its dual fan design and advanced lighting capabilities.

Cooling Performance

Cooling performance is a critical aspect when selecting a CPU cooler. The Thermalright Assassin X 120R Digital boasts a single tower design with a 2000 RPM fan, achieving a maximum air volume of 70.84 CFM. Its unique digital screen helps users monitor temperatures effectively. On the other hand, the Thermalright PS120SE employs a dual fan configuration that operates at a slightly lower speed of 1500 RPM but still manages to deliver a respectable airflow of 66.17 CFM. While both coolers are effective, the Assassin X has a slight edge in airflow and RPM, making it potentially better for high-performance cooling at a lower price point.

Noise Levels

When choosing a CPU cooler, noise levels are a significant consideration. The Thermalright Assassin X 120R operates at a maximum noise level of 29.8 dB(A), which is relatively quiet for a high-performance cooler. Meanwhile, the PS120SE is quieter, with a maximum noise level of just 25.6 dB(A). If noise reduction is a priority for you, the PS120SE might be the better choice, despite its higher cost. The difference in noise levels could mean a quieter gaming or working environment, especially during long sessions.

Compatibility

Both the Thermalright Assassin X 120R and the Thermalright PS120SE offer wide compatibility with various CPU sockets. The Assassin X supports both Intel and AMD platforms, including Intel LGA 1851/1700/1150/1151/1155/1156/1200 and AMD AM4/AM5. The PS120SE offers similar compatibility, covering Intel LGA 1700/1851/1150/1151/1155/1156/1200 and AMD AM4/AM5. This ensures that either cooler will fit most modern builds. However, the Assassin X's installation is noted to require the original backplate for AMD platforms, which may require additional effort during setup.

Heat Pipe Technology

Heat pipe technology plays a vital role in a cooler's effectiveness. The Thermalright Assassin X 120R is equipped with four heat pipes that help dissipate heat effectively, whereas the PS120SE features an advanced design with seven heat pipes and AGHP 4.0 technology. This technology allows for improved heat transfer and can result in better cooling efficiency over prolonged periods. While the PS120SE has more heat pipes, the actual performance will depend on the specific use case and thermal load of the CPU.

Fan Technology

Fan technology is essential for effective cooling. The Thermalright Assassin X 120R utilizes a TL-P12-S PWM fan that operates at a high speed of 2000 RPM, offering a good balance between airflow and noise. Conversely, the PS120SE uses dual TL-C12B-S V2 PWM fans which provide a maximum airflow of 66.17 CFM at a lower RPM of 1500. The dual fan setup may enhance cooling performance, especially under load, but comes at the expense of a higher price point. The choice between a single high-speed fan and dual fans ultimately depends on individual cooling requirements and budget constraints.

Price Comparison

Price is often a decisive factor when selecting a CPU cooler. The Thermalright Assassin X 120R is priced at $24.90, making it about 29% cheaper than the Thermalright PS120SE, which retails for $34.94. This price difference reflects the varying features and performance levels of the two coolers. If budget constraints are a priority, the Assassin X offers an exceptional balance of performance and price, while the PS120SE may justify its higher cost with its dual-fan design and advanced ARGB features.

Which should you buy?

Choosing between the Thermalright Assassin X 120R and the Thermalright PS120SE ultimately depends on your specific needs and preferences. If you prioritize a lower price, high RPM, and effective cooling performance, the Assassin X is an excellent choice. However, if you favor quieter operation, advanced lighting effects, and enhanced cooling technology, the PS120SE may be worth the additional investment. Both options provide solid performance, but understanding their differences will help you make a more informed decision for your build.