Thermalright AXP90 X47 Black Low Profile CPU Cooler vs Thermalright Peerless Assassin 120 Mini Black CPU
Updated August 2026 — Thermalright AXP90 X47 Black Low Profile CPU Cooler wins on size compatibili and noise level, Thermalright Peerless Assassin 120 Mini Black CPU wins on fan efficiency and heat dissipation.
The Thermalright AXP90 X47 Black is a more budget-friendly option, while the Peerless Assassin 120 Mini Black offers superior cooling performance.
Why Thermalright AXP90 X47 Black Low Profile CPU Cooler is better
Price
AXP90 X47 Black is $12 cheaper
Noise Level
AXP90 X47 Black operates at 22.4 DBA
Height
AXP90 X47 Black is only 47mm tall
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
Cooling Performance
Peerless Assassin has 6 heat pipes
Airflow
Peerless Assassin delivers 66.87 CFM
Fan Size
Peerless Assassin uses a 120mm fan
Overall score
Specifications
| Spec | Thermalright AXP90 X47 Black Low Profile CPU Cooler | Thermalright Peerless Assassin 120 Mini Black CPU |
|---|---|---|
| Price | $22.39 | $34.39 |
| Noise Level | 22.4 DBA | 25.6 DBA |
| Airflow | N/A | 66.87 CFM |
| Fan Speed | N/A | 1500 RPM |
| Compatibility | AMD AM4/AM5, Intel 115X/1200 | AMD AM4/AM5, Intel LGA 2011/1700/1150/1151/1200 |
Dimension comparison
Overview of the Products
In the realm of low-profile CPU coolers, the Thermalright AXP90 X47 Black and the Thermalright Peerless Assassin 120 Mini Black stand out as two compelling options. The AXP90 X47 Black is priced at $22.39, making it about 17% cheaper than the Peerless Assassin, which retails for $34.39. Both coolers are designed for compact builds, but they cater to slightly different needs and preferences, making a direct comparison essential for potential buyers.
Design and Build Quality
The design of the Thermalright AXP90 X47 Black is sleek and compact, measuring just 47mm in height. This cooler is specifically engineered for ITX builds, ensuring that space constraints don't compromise cooling efficiency. It features a premium-quality all-metal platform with a back plate fastener, highlighting durability and structural integrity. On the other hand, the Peerless Assassin 120 Mini Black boasts a more robust build with six heat pipes that enhance heat dissipation. Its larger dimensions, while still compact, allow for a more extensive cooling surface, which may be beneficial for higher-performance CPUs.
Cooling Performance
When it comes to cooling performance, the Thermalright Peerless Assassin 120 Mini Black edges out with its advanced AGHP technology and six heat pipes. This technology improves heat dissipation efficiency, particularly under load. The 120mm PWM fan operates at a maximum speed of 1500 RPM, delivering an impressive airflow of 66.87 CFM. In contrast, the AXP90 X47 Black features a smaller 92mm fan with a noise level of just 22.4 DBA, which is quieter but may have limitations in cooling under extreme conditions. Therefore, for users prioritizing heat management, the Peerless Assassin may offer superior performance.
Compatibility
Compatibility is crucial when selecting a CPU cooler, and both the AXP90 X47 Black and the Peerless Assassin 120 Mini Black cater to a wide range of Intel and AMD sockets. The AXP90 X47 Black supports AMD AM4 and AM5 as well as Intel 115X/1200, making it versatile for most modern systems. Meanwhile, the Peerless Assassin also supports AMD AM4 and AM5, along with an extensive list of Intel sockets, including LGA 2011, making it equally versatile. This broad compatibility ensures that either cooler can fit into various builds without significant hassle.
Noise Levels
Noise levels are an essential consideration for many PC builders, especially in quiet environments. The Thermalright AXP90 X47 Black operates at a noise level of 22.4 DBA, which is relatively quiet and suitable for users seeking a silent computing experience. In contrast, the Peerless Assassin 120 Mini Black has a maximum noise level of 25.6 DBA. While this difference may seem minor, it could be noticeable in quieter settings. Therefore, if silence is a priority, the AXP90 X47 Black might be the preferable option.
Price Comparison
Price is a significant factor for many consumers, and here the AXP90 X47 Black takes the lead. Priced at $22.39, it offers considerable savings compared to the Peerless Assassin 120 Mini Black, which is priced at $34.39. This represents a savings of about $12, or 34%, making the AXP90 X47 Black a more budget-friendly choice for those who do not require the additional cooling capacity of the larger unit. For budget-conscious buyers, this price difference is a critical aspect to consider.
Brand Reputation
Both products come from Thermalright, a Taiwanese brand known for its high-quality cooling solutions and over 20 years of experience in the market. This long-standing reputation assures buyers of durability and performance. However, the Peerless Assassin's advanced features, like AGHP technology and multiple heat pipes, may attract those who are more performance-oriented. The AXP90 X47 Black, with its compact design and lower price, appeals to users looking for reliability without the need for extreme performance.
Which should you buy?
Deciding between the Thermalright AXP90 X47 Black and the Thermalright Peerless Assassin 120 Mini Black boils down to your specific needs and budget. If you have space constraints and are looking for a cost-effective solution, the AXP90 X47 Black is an excellent choice at $22.39. However, if you prioritize superior cooling performance and can accommodate a slightly larger cooler, the Peerless Assassin 120 Mini Black, priced at $34.39, offers enhanced heat dissipation and is worth considering. Ultimately, both coolers excel in their respective areas, making either a solid investment depending on your requirements.

