Thermalright AXP90 X47 Full Low Profile CPU Cooler vs Thermalright Peerless Assassin 120 SE Black CPU Cooler
Updated August 2026 — The Thermalright AXP90 X47 is ideal for compact builds and quiet operation, while the Peerless Assassin 120 SE Black excels in cooling performance for larger setups.
The Thermalright AXP90 X47 is ideal for compact builds and quiet operation, while the Peerless Assassin 120 SE Black excels in cooling performance for larger setups.
Why Thermalright AXP90 X47 Full Low Profile CPU Cooler is better
Price
AXP90 X47 is cheaper at C$43.39
Height
AXP90 X47 has a low profile of 47mm
Noise Level
AXP90 X47 operates at 22.4dB
Why Thermalright Peerless Assassin 120 SE Black CPU Cooler is better
Cooling Performance
Peerless Assassin has dual fans for better airflow
Heat Dissipation
Peerless Assassin has a larger effective heat dissipation area
Compatibility
Peerless Assassin supports more Intel sockets
Overall score
Specifications
| Spec | Thermalright AXP90 X47 Full Low Profile CPU Cooler | Thermalright Peerless Assassin 120 SE Black CPU Cooler |
|---|---|---|
| Brand | Thermalright | Thermalright |
| Material | Copper | Aluminum |
| Fan Speed | 2700 RPM | 1550 RPM |
| Socket Support | LGA1700/AM4 | LGA1700/AM5 |
| Cooling Tech | AGHP | Dual Tower |
Dimension comparison
Overview of the Thermalright AXP90 X47 and Peerless Assassin 120 SE Black
The Thermalright AXP90 X47 Full Low Profile CPU Cooler and the Thermalright Peerless Assassin 120 SE Black CPU Cooler cater to different needs in the CPU cooling market. While the AXP90 X47 is designed for compact builds, the Peerless Assassin 120 SE Black targets users requiring robust cooling performance in larger cases. At a price of C$43.39, the AXP90 X47 offers a low-profile solution ideal for tight spaces, whereas the Peerless Assassin 120 SE Black is priced at C$46.79, providing enhanced cooling capabilities thanks to its dual tower design and dual fans.
Design and Build Quality
The design and build quality of a CPU cooler can significantly impact its cooling efficiency and compatibility. The AXP90 X47 features a compact design with a total height of just 47mm, making it suitable for HTPC and ITX systems. Its construction includes pure copper material, which enhances its oxidation resistance. In contrast, the Peerless Assassin 120 SE Black has a more substantial build with dimensions of 125mm x 135mm x 155mm, facilitating a dual tower setup that improves airflow. The use of fully electroplated heat pipes and a finely micro-carved copper bottom in the Peerless Assassin allows for a larger effective heat dissipation area, making it better suited for high-performance CPUs.
Cooling Performance
Cooling performance is a critical factor when choosing a CPU cooler. The AXP90 X47 utilizes AGHP technology with four 6mm heat pipes, effectively doubling the cooling performance through enhanced heat transfer. Its 92mm PWM fan operates at a maximum speed of 2700 RPM, generating an air volume of 42.58 CFM with a noise level of just 22.4dB. On the other hand, the Peerless Assassin 120 SE Black excels with its dual PWM fans, each measuring 120mm. These fans produce an impressive air volume of 66.17 CFM at a maximum speed of 1550 RPM while maintaining a noise level of 25.6dB. For users prioritising cooling efficiency, the Peerless Assassin's dual-fan setup offers a significant advantage.
Compatibility
Compatibility with various CPU sockets is essential for ensuring a cooler can be used with a wide range of systems. The AXP90 X47 supports a variety of Intel sockets, including LGA1700, LGA1150, and more, alongside AMD AM4 and AM5 compatibility. This broad compatibility ensures that the AXP90 X47 can fit into many different builds, especially compact ones. The Peerless Assassin 120 SE Black also supports a wide array of sockets, including LGA1150 through to LGA1851 for Intel and AM4/AM5 for AMD. Both coolers come with the necessary mounting fasteners, making installation straightforward, but the Peerless Assassin may be better suited for users with more powerful processors.
Noise Levels
Noise levels are often a significant concern for users looking for a quiet computing experience. The AXP90 X47 operates at a maximum noise level of 22.4dB, making it an excellent choice for users who prefer silence during their computing tasks. In contrast, the Peerless Assassin 120 SE Black, while still relatively quiet, has a maximum noise level of 25.6dB due to its dual-fan configuration. For users who are particularly sensitive to noise, the AXP90 X47 presents a quieter option, although the difference may not be significant for the average user.
Installation and Ease of Use
Installation ease can greatly influence a user's choice of CPU cooler. The AXP90 X47 is designed for straightforward installation with the included manual and installation video, ensuring that even novice builders can set it up without hassle. Its low-profile design allows for easy access in tight spaces. Similarly, the Peerless Assassin 120 SE Black boasts an installation kit that accommodates various CPU socket types, making it flexible for users. However, the larger size of the Peerless Assassin may require more careful consideration of space within the case during installation.
Price Comparison
Price is often a decisive factor when selecting a CPU cooler. The Thermalright AXP90 X47 is priced at C$43.39, making it an attractive option for those on a budget or needing a cooler for compact builds. Meanwhile, the Peerless Assassin 120 SE Black is slightly more expensive at C$46.79, reflecting its enhanced cooling capabilities and larger design. Despite the price difference, both coolers provide good value for their respective target markets, with the AXP90 X47 offering affordability and the Peerless Assassin delivering superior performance.
Which should you buy?
In conclusion, the choice between the Thermalright AXP90 X47 Full Low Profile CPU Cooler and the Peerless Assassin 120 SE Black CPU Cooler ultimately depends on your specific needs. If you require a compact solution for a small form factor build and value quiet operation, the AXP90 X47 is the better choice at C$43.39. On the other hand, if you need superior cooling performance for high-performance CPUs and do not mind the larger size and slightly higher price of C$46.79, the Peerless Assassin 120 SE Black is the way to go. Each cooler has its strengths, making them suitable for different user scenarios.
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