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Thermalright Peerless Assassin 120 Black CPU Air vs Thermalright Peerless Assassin 120 Mini Black CPU

Updated August 2026 — Thermalright Peerless Assassin 120 Black CPU Air leads on build quality and fan efficiency.

The Thermalright Peerless Assassin 120 Black offers broader compatibility and a robust design, while the Mini Black is a compact and economical choice. Both provide excellent cooling performance.

Why Thermalright Peerless Assassin 120 Black CPU Air is better

Compatibility

Supports more CPU sockets including LGA 2066 and 2011

Cooling Area

Larger effective cooling surface area of 9600cm

Build Quality

Dual tower structure for enhanced heat dissipation

Why Thermalright Peerless Assassin 120 Mini Black CPU is better

Price

Cheaper by $4.51

Size

More compact design for smaller cases

Weight

Lighter weight at 1.02kg compared to the Black model

Overall score

Thermalright Peerless Assassin 120 Black CPU Air
85
Thermalright Peerless Assassin 120 Mini Black CPU
80

Specifications

SpecThermalright Peerless Assassin 120 Black CPU AirThermalright Peerless Assassin 120 Mini Black CPU
Fan Speed1500 RPM1500 RPM
Airflow66.17 CFM66.87 CFM
Noise Level≤25.6 dB(A)≤25.6 dB(A)
Heat Pipes66
Socket SupportLGA 2066, 2011LGA 1851, 1700

Dimension comparison

Thermalright Peerless Assassin 120 Black CPU AirThermalright Peerless Assassin 120 Mini Black CPU

Overview of the Thermalright Peerless Assassin 120 Black and Mini Black CPU Coolers

The Thermalright Peerless Assassin 120 Black is priced at $38.90, while the Mini Black version is slightly cheaper at $34.39, making it about 17% less expensive. Both coolers utilize six heat pipes and AGHP technology, but they differ in size and design, catering to various user needs. This comparison will delve into their features, performance, and overall value, helping you make an informed choice.

Design and Build Quality

The Thermalright Peerless Assassin 120 Black boasts a robust design with an aluminum heatsink cover and dual tower structure, ensuring maximum heat dissipation. Measuring 125mm in length, 135mm in width, and 157mm in height, it provides an effective cooling surface area of 9600cm. In contrast, the Mini Black model is more compact at 125mm long, 110mm wide, and 135mm high. This smaller footprint makes it an excellent choice for cramped PC cases while maintaining a stylish black finish with CNC precision micro-engraved features. Both coolers are designed for durability, with a focus on aesthetic appeal that suits modern builds.

Cooling Performance

Cooling performance is a critical factor when choosing a CPU cooler, and both the Peerless Assassin 120 Black and Mini Black excel in this area. The Black model features dual PWM fans that can reach a fan speed of 1500 RPM, delivering an airflow of 66.17 CFM at a noise level of ≤25.6 dB(A). The Mini Black, while slightly smaller, matches this performance with its own 120mm PWM fan, also achieving 1500 RPM and a maximum airflow of 66.87 CFM, maintaining the same noise level. This parity in cooling efficiency means both products are capable of handling high thermal loads, making either a solid option for intense gaming or heavy multitasking.

Compatibility and Installation

When it comes to compatibility, both coolers support a wide range of CPU sockets, including Intel's LGA 1150/1151/1155/1156/1200/1700/1851 and AMD's AM4/AM5. However, the Black version supports additional sockets like LGA 2066 and 2011, giving it an edge for users with older or more specialized setups. Installation is straightforward for both coolers, as they come with metal fasteners and mounting plates tailored for different platforms. This thoughtful design simplifies the user experience, ensuring that even those new to PC building can achieve a hassle-free setup.

Noise Levels

Noise levels are an essential consideration for users who prioritize a quiet computing environment. Both the Thermalright Peerless Assassin 120 Black and Mini Black operate at a noise level of ≤25.6 dB(A), which is relatively quiet and suitable for most environments. This means that while they excel in cooling performance, they do so without becoming a distraction. Users can enjoy powerful cooling capabilities without compromising on peace, making either cooler an excellent choice for quiet builds.

Brand Reputation and Warranty

Thermalright has established itself as a reputable brand in the cooling market with over 20 years of experience. Known for its commitment to innovation and quality, the company has developed a loyal customer base. Although specific warranty details for these products are not provided, Thermalright's longstanding presence and positive reputation suggest a reliable product backed by customer support. This brand confidence is an important factor to consider when investing in cooling solutions for your PC.

Price and Value Proposition

The Thermalright Peerless Assassin 120 Black retails for $38.90, while the Mini Black is priced at $34.39. This represents a savings of $4.51, making the Mini Black the more economical choice if budget is a primary consideration. However, the additional features and broader compatibility of the Black model may justify the higher price for users with specific needs. Ultimately, both coolers provide significant value for their price points, ensuring effective thermal management for a range of systems.

Which should you buy?

Choosing between the Thermalright Peerless Assassin 120 Black and the Mini Black depends on your specific needs and preferences. If you have a compact case and are looking for a slightly cheaper option, the Mini Black is an excellent choice, offering comparable performance and compatibility. On the other hand, if you value a wider range of socket support and a robust cooling solution, the Peerless Assassin 120 Black may be worth the extra investment. Both models deliver impressive cooling performance, making either a solid addition to your PC build.