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Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler, vs Thermalright Peerless Assassin 120 SE V3 CPU Air

Updated August 2026 — Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler, wins on size compatibili and noise level, Thermalright Peerless Assassin 120 SE V3 CPU Air wins on cooling performa and build quality.

The Thermalright AXP90-X53 is ideal for compact builds with its low profile and quiet operation, while the Peerless Assassin excels in cooling performance for high-end CPUs. Choose based on your specific needs.

Why Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler, is better

Price

AXP90-X53 is $19.39, significantly cheaper than Peerless Assassin at $35.90.

Noise Level

AXP90-X53 operates at 22.4 dBA, quieter than Peerless Assassin at 29.8 dBA.

Size

AXP90-X53 is only 53mm tall, suitable for compact cases.

Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better

Cooling Performance

Peerless Assassin has dual fans and 70.84 CFM airflow.

Heat Pipe Count

Peerless Assassin features 6 heat pipes compared to AXP90-X53's 4.

Build Quality

Peerless Assassin has a more robust dual-tower design.

Overall score

Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler,
75
Thermalright Peerless Assassin 120 SE V3 CPU Air
85

Specifications

SpecThermalright AXP90-X53 White Low Profile ITX CPU Air Cooler,Thermalright Peerless Assassin 120 SE V3 CPU Air
Fan Speed2700 RPM2000 RPM
Heat Pipes46
TDP150WN/A
MaterialAluminumAluminum
CompatibilityLGA1700/AM4LGA1851/AM4

Dimension comparison

Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler,Thermalright Peerless Assassin 120 SE V3 CPU Air

Overview of the Products

The Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler is priced at $19.39, while the Thermalright Peerless Assassin 120 SE V3 CPU Air Cooler comes at $35.90. The AXP90-X53 is significantly cheaper, about 46% less than the Peerless Assassin. Each product targets different needs, with the AXP90-X53 designed for compact systems and the Peerless Assassin suited for larger setups.

Design and Size

The AXP90-X53 features a low-profile design, measuring just 53mm in height, making it an excellent choice for small ITX motherboards and cases. Its compact construction ensures that users won't face memory clearance issues, which can be a significant hurdle in limited spaces. In contrast, the Peerless Assassin stands taller at 155mm, with a double-tower configuration that allows it to house more powerful cooling components. This design approach enables it to handle higher thermal loads but may be less suitable for compact builds.

Cooling Performance

When it comes to cooling performance, the Peerless Assassin has a clear edge due to its dual-fan setup, providing an air volume of 70.84 CFM at 2000RPM. This design allows for superior heat dissipation, especially under heavy workloads. The AXP90-X53, while efficient with its single 92mm fan, delivers a maximum airflow of 42.58 CFM at 2700RPM, but being a low-profile cooler, it is optimized for quieter operation rather than peak cooling performance. Therefore, users with high-performance CPUs may prefer the Peerless Assassin for its robust cooling capabilities.

Noise Levels

Noise levels are an essential consideration for many users. The AXP90-X53 operates at a noise level of just 22.4 dBA, making it one of the quieter options available, perfect for silent builds or home theater PCs. On the other hand, the Peerless Assassin's maximum noise level reaches up to 29.8 dBA, which may be acceptable for gamers and high-performance users but could be a drawback for those prioritizing silence. If noise is a significant concern, the AXP90-X53 offers a distinct advantage.

Compatibility

Compatibility is crucial when choosing a CPU cooler. The AXP90-X53 supports a wide range of Intel and AMD sockets, including LGA1700, AM4, and AM5, which provides versatility for various builds. The Peerless Assassin also boasts broad compatibility, covering Intel and AMD platforms from LGA 1150 to AM5. However, its larger size may limit installation options in compact cases, while the AXP90-X53 is specifically designed to fit smaller configurations without issues.

Installation

Installation ease varies between the two coolers. The AXP90-X53 comes with all necessary mounting hardware and a manual, making it user-friendly for DIY builders, especially in tight spaces. The Peerless Assassin also includes mounting accessories and installation guidance, but users may find it slightly more complex due to its larger size and dual-fan assembly. For builders who prioritize a straightforward setup, the AXP90-X53 may be the preferred choice.

Aesthetics

Aesthetically, the AXP90-X53 showcases a clean white design that can complement various builds, particularly those with a minimalist or modern look. Its compact form factor allows it to blend seamlessly into smaller cases. The Peerless Assassin, with its blackened anodic matte finish and dual-tower design, presents a striking visual appeal that may attract users looking for a more aggressive appearance. Ultimately, the choice comes down to personal preference regarding the visual aspects of the build.

Which should you buy?

Choosing between the Thermalright AXP90-X53 and the Thermalright Peerless Assassin 120 SE V3 boils down to your specific needs. If you're building a compact system where space is a constraint, the AXP90-X53 is the clear winner with its low-profile design, quieter operation, and significantly lower price of $19.39. However, for those who require superior cooling performance for high-end CPUs and have the space to accommodate it, the Peerless Assassin at $35.90 offers a more robust cooling solution. Therefore, assess your priorities—whether it's size, cooling efficiency, noise levels, or budget—to make the best choice for your system.