Thermalright Assassin X120 Refined SE CPU Air vs Thermalright AXP90 X36 Low Profile ITX CPU Cooler,
Updated July 2026 — Thermalright Assassin X120 Refined SE CPU Air wins on weight and height, Thermalright AXP90 X36 Low Profile ITX CPU Cooler, wins on width.
The Thermalright Assassin X120 offers better cooling performance and broader compatibility, while the AXP90 is ideal for compact builds. Choose based on your specific needs.
Why Thermalright Assassin X120 Refined SE CPU Air is better
Cooling Performance
Higher airflow of 66.17 CFM
Compatibility
Supports more CPU sockets
Price
Lower price at $17.90
Why Thermalright AXP90 X36 Low Profile ITX CPU Cooler, is better
Noise Level
Quieter operation at 22.4 dB(A)
Size
Compact design at 36mm height
Build Quality
Premium low-profile construction
Overall score
Specifications
| Spec | Thermalright Assassin X120 Refined SE CPU Air | Thermalright AXP90 X36 Low Profile ITX CPU Cooler, |
|---|---|---|
| Max RPM | 1550 | 2200 |
| Airflow | 66.17 CFM | 50 CFM |
| Noise Level | 25.6 dB(A) | 22.4 dB(A) |
| Socket Support | LGA 1150/1151/1155/1156/1200/1700/AM4/AM5 | LGA 115X/1200/AM4/AM5 |
| Material | Aluminum | Metal |
Dimension comparison
Overview of Thermalright Products
When it comes to CPU coolers, Thermalright offers a range of high-quality options. In this comparison, we explore two of their popular models: the Thermalright Assassin X120 Refined SE and the Thermalright AXP90 X36. The Assassin X120 is priced at $17.90, while the AXP90 is available for $20.39, making the former about 17% cheaper. Both coolers are designed to cater to different needs, with the Assassin X120 focusing on performance and the AXP90 emphasizing a low-profile design.
Design and Build Quality
The Thermalright Assassin X120 Refined SE features a robust aluminum heatsink and four 6mm heat pipes, making it a solid choice for effective heat dissipation. Measuring 125mm x 71mm x 148mm, it is designed to fit in medium-sized computer cases. In contrast, the AXP90 X36 is a compact cooler with a total height of only 36mm, which makes it ideal for space-constrained ITX builds. Both coolers exhibit high build quality, but the AXP90's low-profile design is particularly advantageous for smaller setups.
Cooling Performance
In terms of cooling performance, the Assassin X120 is equipped with a TL-C12C PWM fan that operates at a maximum speed of 1550 RPM, producing an airflow of 66.17 CFM while maintaining a noise level of 25.6 dB(A). This makes it particularly effective for dissipating heat from CPU-intensive tasks. Meanwhile, the AXP90 X36 also employs four 6mm AGHP heat pipes and a slim PWM fan, producing noise levels of up to 22.4 dB(A). While both coolers are efficient, the Assassin X120 has a higher airflow, suggesting better cooling performance during peak loads.
Compatibility
The compatibility of both coolers is commendable. The Assassin X120 supports a wide range of CPU sockets, including Intel's LGA 1150/1151/1155/1156/1200/1700 and AMD's AM4/AM5. This makes it versatile for various builds. On the other hand, the AXP90 X36 also supports multiple sockets, specifically Intel's LGA 115X/1200 and AMD's AM4/AM5. While both models cover major platforms, the Assassin X120 offers broader compatibility, making it a better choice for users with older Intel CPUs.
Noise Levels
Noise levels are crucial for users who prioritize a quiet computing experience. The Assassin X120 operates at a maximum noise level of 25.6 dB(A), which is relatively quiet, though slightly louder than the AXP90's maximum of 22.4 dB(A). The AXP90's quieter operation may appeal to users building compact, silent systems. However, both coolers maintain reasonable noise levels, allowing for efficient cooling without excessive sound.
Price Comparison
The Thermalright Assassin X120 Refined SE is priced at $17.90, while the AXP90 X36 comes in at $20.39. This makes the AXP90 about 14% more expensive than the Assassin X120. While both products provide value in their respective niches, the lower price of the Assassin X120 may attract budget-conscious consumers. However, the additional cost of the AXP90 might be justified for users needing a low-profile solution.
User Experience and Installation
Both coolers are designed for ease of installation. The Assassin X120 comes with metal fasteners compatible with various Intel and AMD platforms, ensuring a straightforward setup process. Similarly, the AXP90 features an all-metal platform with a back plate fastener, making it easy to install in tight spaces. Users can expect a hassle-free experience with either cooler, although the AXP90's design may require more careful handling due to its compact size.
Which should you buy?
Choosing between the Thermalright Assassin X120 Refined SE and the AXP90 X36 ultimately depends on your specific requirements. If you're looking for superior cooling performance and broader compatibility at a lower price, the Assassin X120 is the better option at $17.90. However, if space is a primary concern and you need a low-profile cooler, the AXP90 X36, priced at $20.39, offers an excellent solution with quieter operation. Consider your system's needs carefully to make the best choice for your build.

