Thermalright Assassin X 120R SE V2 CPU Cooler, 4× vs Thermalright AXP90 X47 Black Low Profile CPU Cooler
Updated August 2026 — Thermalright Assassin X 120R SE V2 CPU Cooler, 4× wins on cooling and aesthetics, Thermalright AXP90 X47 Black Low Profile CPU Cooler wins on size.
The Thermalright Assassin X 120R SE V2 offers superior cooling performance and value, while the AXP90 X47 Black excels in low-profile design and quieter operation.
Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better
Cooling Performance
Assassin X has a larger fan and higher airflow.
Price
Assassin X is cheaper by 17%.
Dimensions
Assassin X supports larger cases.
Why Thermalright AXP90 X47 Black Low Profile CPU Cooler is better
Noise Level
AXP90 operates quieter at 22.4 dB(A).
Build Quality
AXP90 features black nickel plating for durability.
Low Profile
AXP90 is suitable for compact builds.
Overall score
Specifications
| Spec | Thermalright Assassin X 120R SE V2 CPU Cooler, 4× | Thermalright AXP90 X47 Black Low Profile CPU Cooler |
|---|---|---|
| Max RPM | 1550 | 0 |
| Airflow | 66.17 CFM | 0 |
| Noise Level | 25.6 dB(A) | 22.4 dB(A) |
| Socket Support | LGA1150/1700 | LGA115X/1200 |
| Material | Aluminum | Metal |
Dimension comparison
Introduction to the Products
In the competitive world of CPU coolers, the Thermalright Assassin X 120R SE V2 and the Thermalright AXP90 X47 Black stand out as two compelling options. The former is priced at $16.59, while the latter costs $22.39, making the Assassin X about 17% cheaper than the AXP90. Both products target different user needs, making it essential to compare their features and performance to determine which cooler might be the best fit for your setup.
Design and Build Quality
Design-wise, the Thermalright Assassin X features a robust structure with dimensions of 120(L)x71(W)x148(H)mm and includes four 6mm heat pipes for effective heat dissipation. Its aluminum heat sink is complemented by a 120mm PWM fan, ensuring good airflow with a maximum noise level of 25.6 dB(A). On the other hand, the AXP90 X47 Black is a low-profile cooler measuring just 47mm in height, making it suitable for compact builds. Both coolers are made from high-quality materials, but the AXP90's black nickel plating offers additional corrosion resistance, giving it a slight edge in aesthetics and durability.
Cooling Performance
When it comes to cooling performance, the Assassin X is equipped with a powerful fan that can reach speeds of 1550 RPM and an airflow capacity of 66.17 CFM. This makes it highly effective for cooling larger CPUs. Conversely, the AXP90 X47 utilizes a 92mm slim PWM fan, which, while still efficient, operates at a lower maximum noise level of 22.4 dB(A). While the AXP90's performance is commendable for its size, the Assassin X offers superior cooling capabilities due to its larger fan and heat sink design.
Compatibility
Both coolers support a range of CPU sockets, making them versatile choices for various builds. The Assassin X is compatible with Intel sockets including LGA1150, LGA1151, LGA1200, and AMD's AM4 and AM5. The AXP90 X47 also supports a variety of Intel and AMD sockets, including LGA 115X, LGA 1200, and AM4/AM5. This compatibility ensures that users can find a suitable installation regardless of their platform, making both products appealing for different configurations.
Noise Levels
Noise levels can greatly impact the user experience when building a PC. The Assassin X operates up to 25.6 dB(A), which is quite reasonable for a cooler of its size and cooling capacity. However, the AXP90 X47 takes the lead with a slightly quieter operation at a maximum of 22.4 dB(A). If a silent operation is a priority for you, the AXP90 may be a more attractive choice, especially for small form-factor builds where every decibel counts.
User Installation
Ease of installation is a crucial aspect for many PC builders. The Assassin X comes with metal fasteners designed for both Intel and AMD platforms, along with clear installation instructions. This thoughtful design makes the installation process straightforward and user-friendly. The AXP90 X47 also offers a simple installation experience with its all-metal platform and back plate fastener, ensuring that both seasoned builders and newcomers can set them up without issues.
Price and Value
Price is often a deciding factor when purchasing hardware. The Assassin X is priced at $16.59, while the AXP90 X47 comes in at $22.39, making the latter about 35% more expensive. For users on a budget, the Assassin X presents a compelling value proposition with its extensive features and performance. However, if you are looking for a low-profile cooler with excellent build quality, the AXP90 may justify its higher price.
Which should you buy?
Ultimately, the decision between the Thermalright Assassin X 120R SE V2 and the Thermalright AXP90 X47 Black boils down to your specific needs and preferences. If you are looking for a cost-effective solution with superior cooling performance and are not limited by space, the Assassin X is the better option. However, if you need a low-profile cooler that operates more quietly and fits into a compact case, the AXP90 is worth the extra investment. Both coolers are excellent in their own right, but discerning your priorities will guide you to the right choice.

