Thermalright AXP90 X36 Low Profile ITX CPU Cooler, vs Thermalright Peerless Assassin 120 Mini Black CPU
Updated August 2026 — Thermalright AXP90 X36 Low Profile ITX CPU Cooler, wins on noise level, Thermalright Peerless Assassin 120 Mini Black CPU wins on ease of install and cooling power.
The Thermalright AXP90 X36 is a budget-friendly option ideal for compact builds, while the Peerless Assassin 120 Mini excels in cooling performance. Choose based on your priorities.
Why Thermalright AXP90 X36 Low Profile ITX CPU Cooler, is better
Price
AXP90 is $20.39, significantly cheaper than Peerless Assassin at $34.39.
Noise Level
AXP90 operates at a quieter 22.4 dBA.
Compact Size
AXP90's 36mm height is ideal for low-profile builds.
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
Cooling Performance
Peerless Assassin has superior heat dissipation with 6 heat pipes.
Airflow
Peerless Assassin provides 66.87 CFM airflow.
Compatibility
Peerless Assassin supports a wider range of CPU sockets.
Overall score
Specifications
| Spec | Thermalright AXP90 X36 Low Profile ITX CPU Cooler, | Thermalright Peerless Assassin 120 Mini Black CPU |
|---|---|---|
| Price | $20.39 | $34.39 |
| Noise Level | 22.4 dBA | 25.6 dBA |
| Airflow | N/A | 66.87 CFM |
| Heat Pipes | 4x6mm | 6x6mm |
| Fan Speed | N/A | 1500 RPM |
Dimension comparison
Overview of the Products
The Thermalright AXP90 X36 Low Profile ITX CPU Cooler is priced at $20.39, while the Thermalright Peerless Assassin 120 Mini Black CPU Cooler costs $34.39. This makes the AXP90 about 40% cheaper than its counterpart. The AXP90 is designed for compact builds, while the Peerless Assassin aims for higher cooling performance with its advanced technology. Both products cater to users seeking reliable CPU cooling solutions, but their target audiences and applications differ significantly.
Design and Build Quality
The AXP90 features a compact design with a height of just 36mm, making it suitable for low-profile builds. Its all-metal platform and nickel plating enhance durability and corrosion resistance. In contrast, the Peerless Assassin measures 125mm in length and 135mm in height, delivering a more robust cooling capacity due to its six heat pipes and larger 120mm PWM fan. The fully blackened aesthetic of the Peerless Assassin adds a modern touch, appealing to users focused on visual appeal alongside performance.
Cooling Performance
The AXP90 utilizes four 6mm AGHP heat pipes and operates at a noise level of just 22.4 dBA, making it an excellent choice for users prioritizing silence. However, the Peerless Assassin, with its six heat pipes and a fan speed of 1500 RPM, produces a maximum airflow of 66.87 CFM, which allows it to dissipate heat more effectively. While the AXP90 excels in low-noise applications, the Peerless Assassin offers higher cooling performance, suitable for overclocking and demanding tasks.
Compatibility
Both coolers support a range of CPU sockets, including AMD AM4 and AM5 as well as Intel's LGA series. The AXP90 is compatible with Intel's 115X/1200 series and provides a straightforward installation process with its backplate fastener. The Peerless Assassin offers broader compatibility with Intel LGA 2011 alongside the same Intel and AMD sockets as the AXP90. This extended compatibility makes the Peerless Assassin a more versatile option for users with a wider array of CPU choices.
Noise Levels
The AXP90 operates at a maximum noise level of 22.4 dBA, making it exceptionally quiet. This feature is ideal for users who prioritize a silent computing environment. On the other hand, the Peerless Assassin has a slightly higher noise level of up to 25.6 dBA. While still relatively quiet, it may not be as suitable for users who are particularly sensitive to noise. The trade-off comes down to the AXP90's focus on silence versus the Peerless Assassin's emphasis on performance.
Price and Value
The AXP90, priced at $20.39, is significantly more budget-friendly than the Peerless Assassin, which retails for $34.39. This price difference of approximately $14 is about 40%, making the AXP90 an attractive option for budget-conscious consumers. However, the increased cost of the Peerless Assassin can be justified by its superior cooling capabilities and expanded compatibility. Value is subjective, depending on whether the user prioritizes cost or performance.
Brand Reputation
Thermalright has a longstanding reputation in the cooling market, with over 20 years of experience. Both products carry the Thermalright brand, which is known for its commitment to quality and innovation. The Peerless Assassin benefits from advanced AGHP technology, showcasing Thermalright's dedication to improving cooling efficiency. Meanwhile, the AXP90 stands as a testament to the brand's ability to deliver compact and effective solutions for smaller builds, reinforcing their strong presence in the industry.
Which should you buy?
Choosing between the Thermalright AXP90 X36 Low Profile ITX CPU Cooler and the Thermalright Peerless Assassin 120 Mini Black CPU Cooler ultimately depends on your specific needs. If you're looking for a budget-friendly, low-profile solution that emphasizes silence, the AXP90 is the clear choice at $20.39. However, if you require superior cooling performance and expanded compatibility for more demanding tasks, the Peerless Assassin at $34.39 offers significant advantages. Consider your priorities—budget constraints versus cooling needs—before making your decision.

