Thermalright Phantom Spirit 120 SE Black CPU Air Cooler vs Thermalright Assassin X 120 SE CPU Air Cooler
Updated August 2026 — The Thermalright Phantom Spirit 120 SE Black offers superior cooling performance and build quality, while the Assassin X 120 SE is a budget-friendly option with decent efficiency.
The Thermalright Phantom Spirit 120 SE Black offers superior cooling performance and build quality, while the Assassin X 120 SE is a budget-friendly option with decent efficiency.
Why Thermalright Phantom Spirit 120 SE Black CPU Air Cooler is better
Cooling Performance
Phantom Spirit has a larger heat sink and advanced cooling technology.
Build Quality
Phantom Spirit features a premium design with anodized finishes.
Height Compatibility
Phantom Spirit's height of 154mm allows for better compatibility with tall RAM.
Why Thermalright Assassin X 120 SE CPU Air Cooler is better
Price
Assassin X is significantly cheaper at C$25.59.
Noise Level
Assassin X operates at a lower maximum noise level of 25.6 dB(A).
Weight
Assassin X is lighter at 0.645 kg compared to Phantom Spirit.
Overall score
Specifications
| Spec | Thermalright Phantom Spirit 120 SE Black CPU Air Cooler | Thermalright Assassin X 120 SE CPU Air Cooler |
|---|---|---|
| Price | C$46.71 | C$25.59 |
| TDP | N/A | 125-225W |
| Fan Speed | N/A | 1550 RPM |
| Airflow | N/A | 66.17 CFM |
| Socket Support | LGA1150/1700, AM4/AM5 | 115X/1200, AM4 |
Dimension comparison
Overview of the Thermalright Phantom Spirit 120 SE Black
The Thermalright Phantom Spirit 120 SE Black CPU Air Cooler is designed for superior heat dissipation in a compact form factor. Priced at C$46.71, it features a double tower radiator that stands at 154mm high, making it suitable for various PC builds without interference with ATX motherboards or tall RAM modules. The cooler employs a combination of advanced materials, including a blackened nano coating and a finely carved copper base, which enhances its heat dissipation capabilities significantly.
The Phantom Spirit incorporates a 7x6mm heat pipe system that utilises AGHP upgraded technology, supporting both vertical and horizontal orientations. It boasts a promising industrial service life of up to 20,000 hours. With compatibility for Intel LGA1150 through LGA1700 and AMD AM4/AM5 sockets, it caters to a wide range of CPU setups, making it a versatile choice for gamers and PC enthusiasts.
Overview of the Thermalright Assassin X 120 SE
The Thermalright Assassin X 120 SE CPU Air Cooler is another solid option priced at C$25.59, making it a more budget-friendly choice compared to the Phantom Spirit. This cooler has a slightly lower height of 148mm, which also permits compatibility with medium-sized computer cases. The Assassin X is constructed primarily from aluminium, ensuring durability while maintaining a light weight of 0.645 kg (1.42 lb).
Equipped with a PWM fan that operates at a speed of 1550 RPM, the Assassin X delivers an airflow of up to 66.17 CFM while maintaining a noise level of ≤25.6 dB(A). It employs a 4x6mm heat pipe system, which, like the Phantom Spirit, uses AGHP technology to combat the inverse gravity effect in various orientations. Compatibility is also broad, supporting Intel 115X and 1200 sockets, as well as AMD AM4 configurations.
Cooling Performance Comparison
When it comes to cooling performance, the Thermalright Phantom Spirit 120 SE Black has a distinct advantage due to its larger heat sink and advanced cooling technologies. With a double tower design and a height of 154mm, it provides a greater surface area for heat dissipation compared to the Assassin X's single tower design at 148mm.
The Phantom Spirit’s innovative materials and design lead to superior heat management capabilities. Its 7x6mm heat pipes are designed to maximise thermal conductivity, making it particularly effective for high-performance CPUs. In contrast, the Assassin X, while still efficient, has a lower thermal design power (TDP) rating of 125 to 225W and a smaller heat pipe configuration, which may limit its performance under heavy loads.
Noise Levels and Operational Efficiency
Noise levels are crucial for a cooling solution, especially for users who value a quiet computing environment. The Thermalright Assassin X 120 SE operates at a maximum noise level of 25.6 dB(A), which is relatively quiet, allowing for an unobtrusive user experience. Its PWM fan adjustment also contributes to maintaining lower noise during lighter loads.
On the other hand, while the Phantom Spirit does not specify its noise output, the larger design may potentially lead to a slightly noisier operation, especially under heavy loads. However, both coolers utilize high-quality S-FDB bearings, ensuring longevity and consistent performance. Users seeking peace and quiet might lean towards the Assassin X for its proven low-noise capabilities.
Build Quality and Design Aesthetics
Both the Thermalright Phantom Spirit 120 SE Black and the Assassin X 120 SE exhibit impressive build quality. The Phantom Spirit features a sleek, all-black aesthetic with anodised finishes that not only enhance its visual appeal but also contribute to its durability. The fine micro-carved copper base and fully electroplated heat pipes add an element of sophistication to its design.
Conversely, the Assassin X also boasts a robust aluminium construction, ensuring it can withstand the rigours of everyday use. However, its simpler design may not appeal to those looking for a more premium look. Both products reflect Thermalright’s commitment to quality, but the Phantom Spirit stands out with its more modern and stylish appearance.
Compatibility and Installation
In terms of compatibility, both coolers support a wide range of Intel and AMD sockets. The Phantom Spirit supports Intel LGA1150 through LGA1700 and AMD AM4/AM5, providing a comprehensive solution for most recent builds. Similarly, the Assassin X covers Intel 115X and 1200 sockets and the AMD AM4 socket, making it versatile as well.
Installation for both coolers is straightforward, with each product coming with the necessary mounting hardware. However, it's noted that the Phantom Spirit requires the use of the original motherboard backplate for AMD installations. This could be a consideration for users who prefer an easier installation process, particularly with the Assassin X's inclusive mounting solutions.
Price Point Analysis
The pricing difference between the two coolers is quite significant. The Thermalright Phantom Spirit 120 SE Black is priced at C$46.71, while the Assassin X 120 SE is more affordable at C$25.59. This price gap may influence purchasing decisions, especially for budget-conscious consumers or those building entry-level systems.
While the Phantom Spirit offers superior cooling performance and a more premium build, the Assassin X provides solid performance at a lower price point. Potential buyers should weigh their budget against the features that matter most to them—whether it be cooling efficiency, noise levels, or aesthetics.
Which should you buy?
Deciding between the Thermalright Phantom Spirit 120 SE Black and the Assassin X 120 SE ultimately hinges on individual needs and preferences. If you're seeking exceptional cooling performance and don't mind investing a bit more, the Phantom Spirit is the clear choice with its advanced features and superior heat dissipation capabilities. However, if budget constraints are a priority and you desire a reliable, quieter cooler for mid-range builds, the Assassin X offers great value without compromising on essential performance features. Each cooler has its merits, making it essential to consider what aspects are most important for your specific use case.
versusfinder.com is a participant in the Amazon.ca Associates Program. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

