Thermalright AXP90 X47 Black Low Profile CPU Cooler vs Thermalright Peerless Assassin 120 SE V3 CPU Air
Updated August 2026 — Thermalright AXP90 X47 Black Low Profile CPU Cooler wins on size and noise level, Thermalright Peerless Assassin 120 SE V3 CPU Air wins on cooling performa and aesthetics.
The Thermalright AXP90 X47 is ideal for compact builds, while the Peerless Assassin 120 SE V3 excels in high-performance cooling. Choose based on your system needs.
Why Thermalright AXP90 X47 Black Low Profile CPU Cooler is better
Compact Size
Ideal for small form factor cases
Lower Price
More budget-friendly option
Quieter Operation
Operates at 22.4 DBA
Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better
Higher Performance
Better cooling for demanding CPUs
Dual Fans
Enhanced airflow with dual 120mm fans
More Heat Pipes
Six heat pipes for improved heat dissipation
Overall score
Specifications
| Spec | Thermalright AXP90 X47 Black Low Profile CPU Cooler | Thermalright Peerless Assassin 120 SE V3 CPU Air |
|---|---|---|
| Noise Level | 22.4 DBA | 29.8 DBA |
| Max RPM | N/A | 2000 RPM |
| Air Volume | N/A | 70.84 CFM |
| Socket Support | Intel 115X, AMD AM4/AM5 | Intel LGA 1851/1700, AMD AM4/AM5 |
| Cooling Type | Low Profile | Air Cooler |
Dimension comparison
Overview of CPU Coolers
When comparing the Thermalright AXP90 X47 Black Low Profile CPU Cooler and the Thermalright Peerless Assassin 120 SE V3 CPU Air Cooler, a key takeaway is the difference in size and intended application. The AXP90 X47 is designed for compact builds, while the Peerless Assassin targets users seeking high-performance cooling for larger setups. Understanding the unique features of each can help determine which cooler aligns better with your needs.
Design and Build Quality
The Thermalright AXP90 X47 features a compact design with a height of just 47mm, making it an excellent choice for small form factor cases. It utilizes an all-metal platform and a premium black nickel plating process, enhancing its durability against corrosion and providing a sleek aesthetic. In contrast, the Peerless Assassin 120 SE V3 boasts a more robust structure with a double-tower dual-fan system, ensuring superior heat dissipation. With its six heat pipes and aluminum heatsink cover, the Peerless Assassin is built for heavy-duty performance, showcasing a design aimed at maximizing airflow and cooling efficiency.
Cooling Performance
Cooling performance is a significant differentiator between the two coolers. The AXP90 X47 incorporates four 6mm heat pipes with a noise level of 22.4 DBA, making it relatively quiet while effectively managing heat in compact spaces. On the other hand, the Peerless Assassin 120 SE V3 is equipped with dual 120mm fans that can reach speeds of up to 2000 RPM, delivering a maximum air volume of 70.84 CFM. This higher performance allows the Peerless Assassin to excel in dissipating heat from more demanding CPUs, making it better suited for overclocking and high-performance setups.
Compatibility
Compatibility is another crucial factor to consider when choosing between these coolers. The AXP90 X47 supports a range of socket types for both Intel and AMD, including Intel 115X and AMD AM4/AM5. This broad compatibility ensures that it can fit into many ITX builds. Conversely, the Peerless Assassin 120 SE V3 also supports a wide array of sockets, including Intel LGA 1851 and AMD AM4/AM5, making it versatile for various systems. However, due to its larger size, system builders need to ensure there is sufficient clearance in their cases for the Peerless Assassin.
Noise Levels
Noise levels can significantly impact the user experience, particularly in quiet environments. The AXP90 X47 operates at a maximum noise level of 22.4 DBA, which is notably quiet, making it suitable for users who prioritize a silent operation. In comparison, the Peerless Assassin 120 SE V3, with its dual fans, has a maximum noise level of 29.8 DBA. While still relatively quiet for a performance cooler, it's essential to consider this difference, especially for users who prefer a noiseless environment.
Price Comparison
Pricing is a critical factor for many buyers. The Thermalright AXP90 X47 is priced at $22.39, whereas the Thermalright Peerless Assassin 120 SE V3 retails for $35.90. This makes the AXP90 X47 about 37% cheaper than the Peerless Assassin. Budget-conscious consumers or those building compact systems may find the AXP90 X47 a more attractive option without sacrificing too much in terms of cooling performance.
Target Audience
The target audience for each cooler differs based on performance needs and system design. The AXP90 X47 is ideal for users with smaller cases who still want reliable cooling performance without the bulk of larger coolers. It appeals to casual gamers or those looking for efficient cooling in a small form factor. In contrast, the Peerless Assassin 120 SE V3 caters to gamers and PC enthusiasts who demand maximum cooling efficiency and have the space to accommodate a larger cooler. Its premium features and enhanced cooling capabilities make it suitable for high-performance builds.
Which should you buy?
Deciding between the Thermalright AXP90 X47 Black Low Profile CPU Cooler and the Thermalright Peerless Assassin 120 SE V3 CPU Air Cooler ultimately depends on your specific needs and system setup. If you’re building a compact ITX system and are looking for an affordable, quiet cooling solution, the AXP90 X47 is an excellent choice at $22.39. However, if you require enhanced cooling performance for a more demanding build and have the space for a larger cooler, the Peerless Assassin 120 SE V3, priced at $35.90, offers superior heat dissipation and versatility. Consider your budget, case size, and cooling requirements before making your decision.

