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Thermalright Assassin X 120R SE V2 CPU Cooler, 4× vs Thermalright Phantom Spirit 120 SE Black CPU

Updated August 2026 — Thermalright Phantom Spirit 120 SE Black CPU leads on build quality and cooling.

The Thermalright Assassin X 120R SE V2 offers excellent value for budget-conscious users, while the Phantom Spirit 120 SE Black provides enhanced cooling performance and aesthetics. Choose based on your specific needs.

Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better

Price

Assassin X 120R SE V2 is significantly cheaper at $16.59

Size

More compact dimensions for smaller cases

Single Fan

Simpler design may appeal to some users

Why Thermalright Phantom Spirit 120 SE Black CPU is better

Cooling

Dual fans provide better cooling performance

Heat Pipes

More heat pipes enhance heat dissipation

Aesthetics

More stylish design with blackened finish

Overall score

Thermalright Assassin X 120R SE V2 CPU Cooler, 4×
75
Thermalright Phantom Spirit 120 SE Black CPU
85

Specifications

SpecThermalright Assassin X 120R SE V2 CPU Cooler, 4×Thermalright Phantom Spirit 120 SE Black CPU
Fan RPM15501500
Airflow (CFM)66.1766.17
Noise Level≤25.6 dB(A)≤25.6 dB(A)
Socket SupportLGA1150/1151/1155/1156/1200/1700/AM4/AM5LGA1851/1700/AM4/AM5
InstallationEasy with instructionsEasy with instructions

Dimension comparison

Thermalright Assassin X 120R SE V2 CPU Cooler, 4×Thermalright Phantom Spirit 120 SE Black CPU

Overview of the Products

In the realm of CPU coolers, the Thermalright Assassin X 120R SE V2 CPU Cooler is priced at $16.59, while the Thermalright Phantom Spirit 120 SE Black CPU Cooler costs $39.90. This represents a significant difference of about 140%, making the Assassin X 120R SE V2 a far more economical choice. However, price isn’t the only factor to consider; performance and features also play crucial roles in determining which cooler might be a better fit for your needs.

Design and Build Quality

The Thermalright Assassin X 120R SE V2 features a compact design with dimensions of 120(L)x71(W)x148(H) mm, making it suitable for various computer cases. Its robust aluminum construction and four 6mm heat pipes promise excellent heat dissipation. On the other hand, the Phantom Spirit 120 SE Black has a slightly larger dimension of 125(L)x135(W)x154(H) mm and boasts seven heat pipes with a blackened nano coating, enhancing its effective heat dissipation area. The aesthetic appeal of the Phantom Spirit, with its anodized black finish, adds a stylish touch to any build.

Cooling Performance

When it comes to cooling performance, the Assassin X 120R SE V2 utilizes a 1550 RPM PWM fan, providing airflow of 66.17 CFM while maintaining a noise level of ≤25.6 dB(A). This design promotes both efficient cooling and quiet operation. In contrast, the Phantom Spirit 120 SE Black employs dual TL-C12B V2 PWM fans that operate at a slightly lower 1500 RPM but also achieve 66.17 CFM airflow with the same noise level. The dual fans of the Phantom Spirit may offer enhanced cooling capabilities, especially in high-demand scenarios, making it a strong contender for users seeking optimal thermal performance.

Compatibility

Both coolers support a wide range of CPU sockets, making them versatile options for various builds. The Assassin X 120R SE V2 is compatible with Intel sockets LGA1150, 1151, 1155, 1156, 1200, 1700, and 1851 as well as AMD AM4 and AM5. Similarly, the Phantom Spirit 120 SE Black supports Intel LGA1851, 1700, and the same AMD sockets. This broad compatibility ensures that both coolers can be used with a variety of modern processors, catering to both AMD and Intel users.

Noise Levels

Noise levels are critical for many users, particularly those who prioritize a quiet computing experience. Both the Assassin X 120R SE V2 and the Phantom Spirit 120 SE Black maintain a noise level of ≤25.6 dB(A), which is relatively quiet and conducive to a peaceful working environment. The Assassin X employs a single fan design, while the Phantom Spirit utilizes dual fans, which may distribute noise more evenly. However, both models are engineered to minimize sound, making them suitable for noise-sensitive applications.

Installation Process

Ease of installation is another important factor to consider when choosing a CPU cooler. The Assassin X 120R SE V2 comes with metal fasteners for both Intel and AMD platforms and includes installation videos or instructions for user convenience. The Phantom Spirit 120 SE Black also provides necessary mounting plates and fasteners, with clear installation instructions. Both coolers are designed for straightforward setup, ensuring that even novice users can install them without difficulty.

Aesthetic Appeal

Aesthetics can impact user preference when selecting a cooler. The Assassin X 120R SE V2 features a simple and functional design, with a self-luminous fan that lights up upon connection. In contrast, the Phantom Spirit 120 SE Black offers a more sophisticated and modern appearance with its blackened finish and dual fan setup. This aesthetic can be particularly appealing in builds where visual design is essential, making the Phantom Spirit potentially more attractive for users who value style alongside performance.

Which should you buy?

Ultimately, the decision between the Thermalright Assassin X 120R SE V2 and the Thermalright Phantom Spirit 120 SE Black comes down to your specific needs and budget. The Assassin X 120R SE V2 offers impressive cooling performance at a very low price of $16.59, making it an excellent choice for budget-conscious users or those with moderate cooling needs. However, if you're looking for enhanced cooling capabilities, a dual-fan setup, and a more stylish design, the Phantom Spirit 120 SE Black at $39.90 might be worth the investment. Each cooler has its strengths, so consider your priorities carefully when making your choice.