Thermalright AXP90 X47 Full Low Profile CPU Cooler vs Thermalright Assassin X 120 SE CPU Air Cooler
Updated August 2026 — The Thermalright AXP90 X47 is ideal for compact builds with silent operation, while the Assassin X 120 SE offers better cooling performance at a lower price.
The Thermalright AXP90 X47 is ideal for compact builds with silent operation, while the Assassin X 120 SE offers better cooling performance at a lower price.
Why Thermalright AXP90 X47 Full Low Profile CPU Cooler is better
Low Profile
AXP90 X47 is designed for compact builds.
Noise Level
AXP90 X47 operates at a quieter 22.4 dB(A).
Compatibility
AXP90 X47 supports a wider range of CPU sockets.
Why Thermalright Assassin X 120 SE CPU Air Cooler is better
Price
Assassin X 120 SE is more affordable at C$25.59.
Airflow
Assassin X 120 SE provides higher airflow at 66.17 CFM.
Size
Assassin X 120 SE fits medium-sized cases.
Overall score
Specifications
| Spec | Thermalright AXP90 X47 Full Low Profile CPU Cooler | Thermalright Assassin X 120 SE CPU Air Cooler |
|---|---|---|
| Max RPM | 2700 | 1550 |
| Noise Level | 22.4 dB(A) | 25.6 dB(A) |
| Socket Support | LGA1700/AM4 | 115X/AM4 |
| Material | Copper | Aluminum |
| Installation Ease | Easy | Easy |
Dimension comparison
Brand Overview
Both the Thermalright AXP90 X47 Full Low Profile CPU Cooler and the Thermalright Assassin X 120 SE CPU Air Cooler come from the well-established Thermalright brand, which has over 20 years of experience in developing computer accessories. This extensive background contributes to the reliability and performance of both products. However, the AXP90 X47 is tailored specifically for low-profile applications, making it ideal for compact builds, while the Assassin X 120 SE is designed for medium-sized computer cases, offering a different focus on cooling performance.
Price Comparison
The Thermalright AXP90 X47 is priced at C$43.39, while the Thermalright Assassin X 120 SE is significantly more affordable at C$25.59. This price difference of C$17.80 might be a crucial factor for budget-conscious consumers. The AXP90 X47 justifies its higher price point with its low-profile design and advanced AGHP technology, which enhances cooling efficiency, but for users with larger cases, the lower cost of the Assassin X 120 SE could be more appealing.
Design and Dimensions
In terms of design, the AXP90 X47 measures 94.5mm x 95mm with a height of just 47mm, making it an excellent choice for small form-factor builds, including HTPCs and ITX systems. In contrast, the Assassin X 120 SE has larger dimensions of 125mm x 71mm and a height of 148mm, making it suitable for medium-sized cases. The compact design of the AXP90 X47 alleviates memory clearance issues, while the larger size of the Assassin X 120 SE may provide better cooling performance due to increased surface area for heat dissipation.
Cooling Performance
The cooling performance of both products is noteworthy, but they cater to different performance needs. The AXP90 X47 features a 92mm PWM fan that operates at up to 2700 RPM, generating a maximum airflow of 42.58 CFM with a noise level of just 22.4 dB(A). This makes it particularly quiet, an important factor for users prioritizing a silent operation. Conversely, the Assassin X 120 SE is equipped with a 120mm PWM fan capable of 66.17 CFM at a maximum speed of 1550 RPM, albeit with a slightly higher noise level of 25.6 dB(A). This difference indicates that while the AXP90 X47 excels in noise reduction, the Assassin X 120 SE may offer superior cooling efficiency for users with sufficient case space.
Compatibility
Both coolers boast broad compatibility with various CPU sockets, but they cater to different user needs. The AXP90 X47 supports Intel sockets LGA1700, 1150, 1151, 1155, 1156, 1200, and AMD sockets AM4 and AM5. On the other hand, the Assassin X 120 SE supports Intel sockets 115X, 1200, 1700, and AMD AM4. This wider range of compatibility in the AXP90 X47 may be beneficial for users with newer or diverse systems, while the Assassin X 120 SE remains compatible with most mainstream setups.
Installation Process
Ease of installation is another critical factor, and both coolers come with metal mounting fasteners for their respective CPU socket types. The AXP90 X47 is designed to be user-friendly with an accompanying manual or installation video, ensuring a straightforward setup. The Assassin X 120 SE similarly provides necessary mounting plates or fastener parts, supporting a hassle-free installation. The straightforward installation process for both makes them accessible for users of varying technical skill levels.
Noise Levels
Noise levels play a significant role in user satisfaction for CPU coolers. The AXP90 X47 operates at a maximum noise level of 22.4 dB(A), making it one of the quieter options available, ideal for users who prioritize a silent working environment. In contrast, while the Assassin X 120 SE is a bit louder at 25.6 dB(A), it still maintains a low noise level for a cooler of its size, indicating that it balances performance and quiet operation well. Users who are particularly sensitive to noise might lean towards the AXP90 X47 for its quieter performance.
Which should you buy?
Choosing between the Thermalright AXP90 X47 Full Low Profile CPU Cooler and the Thermalright Assassin X 120 SE CPU Air Cooler ultimately depends on your specific needs and build requirements. If you’re working with a compact case and desire a cooler that offers silent operation and excellent compatibility with a range of CPU sockets, the AXP90 X47 at C$43.39 is a worthy investment. Conversely, if you have a medium-sized case and need a more budget-friendly option that still delivers strong cooling performance, the Assassin X 120 SE at C$25.59 is a solid choice. Each cooler has its strengths, making the decision largely dependent on your unique setup and preferences.
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