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Thermalright Assassin X120 Refined SE CPU Air vs Thermalright Phantom Spirit 120SE CPU Air Cooler,

Updated July 2026 — Thermalright Assassin X120 Refined SE CPU Air wins on weight, Thermalright Phantom Spirit 120SE CPU Air Cooler, wins on width and height.

The Thermalright Phantom Spirit 120SE offers superior cooling performance and features, while the Assassin X120 is a budget-friendly option. Choose based on your cooling needs and budget.

Why Thermalright Assassin X120 Refined SE CPU Air is better

Price

Assassin X120 is significantly cheaper at $17.90.

Noise Level

Both operate at ≤25.6 dB(A), but single fan may be quieter under load.

Size

Assassin X120 has a smaller footprint, making it easier to fit in compact cases.

Why Thermalright Phantom Spirit 120SE CPU Air Cooler, is better

Cooling Performance

Phantom Spirit has 7 heat pipes for better heat dissipation.

Fan Configuration

Dual fans provide better airflow and thermal management.

Build Quality

Phantom Spirit includes a copper base for improved thermal conductivity.

Overall score

Thermalright Assassin X120 Refined SE CPU Air
75
Thermalright Phantom Spirit 120SE CPU Air Cooler,
85

Specifications

SpecThermalright Assassin X120 Refined SE CPU AirThermalright Phantom Spirit 120SE CPU Air Cooler,
Price$17.90$35.90
Fan RPM15501500
Airflow66.17 CFM66.17 CFM
Noise Level≤25.6 dB(A)≤25.6 dB(A)
Socket CompatibilityLGA 1150/1151/1155/1200/1700/AM4/AM5LGA 1851/1700/1150/1151/1155/1200/AM4/AM5

Dimension comparison

Thermalright Assassin X120 Refined SE CPU AirThermalright Phantom Spirit 120SE CPU Air Cooler,

Overview of the Thermalright Assassin X120 Refined SE and Phantom Spirit 120SE

The Thermalright Assassin X120 Refined SE is priced at $17.90, while the Thermalright Phantom Spirit 120SE is more expensive at $35.90. This makes the Assassin X120 about 50% cheaper than the Phantom Spirit. Both products are designed for effective CPU cooling, but they cater to different user needs and budgets.

The Assassin X120 features four heat pipes and is equipped with a single TL-C12C PWM fan, while the Phantom Spirit boasts seven heat pipes and dual TL-C12B V2 PWM fans. This difference in design suggests that the Phantom Spirit may offer superior cooling performance, particularly under heavy loads. However, the lower price of the Assassin X120 makes it an attractive option for budget-conscious users.

Cooling Performance Comparison

When it comes to cooling performance, the Phantom Spirit 120SE stands out with its seven heat pipes, compared to the four found in the Assassin X120. The increased number of heat pipes in the Phantom Spirit can enhance heat dissipation, making it more suitable for high-performance CPUs.

Both coolers employ the AGHP technology, which helps mitigate the inverse gravity effect, ensuring efficient cooling regardless of orientation. The TL-C12B V2 fans in the Phantom Spirit can push the same airflow of 66.17 CFM as the TL-C12C fan in the Assassin X120, but the dual fan setup likely provides better thermal management overall.

Design and Build Quality

In terms of design, the Phantom Spirit 120SE has a slightly larger footprint, measuring 125(L)x135(W)x154(H)mm, while the Assassin X120 measures 125(L)x71(W)x148(H)mm. This larger size of the Phantom Spirit allows it to house more heat pipes and dual fans, contributing to its enhanced cooling capabilities.

Both coolers utilize aluminum for their heatsinks, but the Phantom Spirit also incorporates a finely carved pure copper base for improved thermal conductivity. This combination of materials in the Phantom Spirit suggests a focus on maximizing cooling performance without compromising on aesthetics, as evidenced by its anodized black frosted top.

Noise Levels During Operation

Both the Assassin X120 and the Phantom Spirit operate at a noise level of ≤25.6 dB(A), making them relatively quiet options for CPU cooling. The PWM fans in both models are designed to adjust their speed based on the CPU temperature, ensuring that noise is kept to a minimum during regular operation.

However, the dual fan configuration of the Phantom Spirit may allow it to run at lower RPMs while maintaining the same airflow as the single fan in the Assassin X120. This could translate to quieter performance under load, making the Phantom Spirit a better choice for users focused on silent operation.

Compatibility with CPU Sockets

Both CPU coolers are compatible with a variety of Intel and AMD sockets. The Assassin X120 supports Intel sockets LGA 1150/1151/1155/1200/1700 and AMD AM4/AM5, while the Phantom Spirit extends compatibility to Intel LGA 1851 and other sockets.

This broader compatibility makes the Phantom Spirit a versatile choice for users who may want to upgrade their systems in the future. However, both coolers come with mounting plates and fasteners needed for installation, ensuring that users can easily set them up regardless of their chosen platform.

Price and Value Proposition

The Assassin X120 is priced at $17.90, making it a budget-friendly option for users looking to improve their cooling without breaking the bank. In contrast, the Phantom Spirit comes in at $35.90, which is about 100% more expensive than the Assassin X120.

While the higher price of the Phantom Spirit reflects its more advanced features, such as dual fans and additional heat pipes, the value of the Assassin X120 should not be overlooked, especially for users who do not require extreme cooling capabilities.

Brand Reputation and Warranty

Thermalright has over 20 years of experience in the cooling market, establishing a solid reputation for quality and performance. Both coolers come from the same brand, which is known for its commitment to research and development in computer accessories.

While specific warranty details are not provided, the longevity of the products, supported by the use of S-FDB bearings for both coolers, suggests that users can expect reliable performance over time. This makes both models trustworthy choices for consumers seeking effective cooling solutions.

Which should you buy?

Choosing between the Thermalright Assassin X120 Refined SE and the Phantom Spirit 120SE ultimately depends on your specific needs and budget. If you are looking for an affordable, reliable cooler for moderate use, the Assassin X120 at $17.90 offers excellent value for money. However, if you require superior cooling performance for high-end CPUs, the Phantom Spirit at $35.90, with its enhanced features and dual fans, may be worth the investment.