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

Updated August 2026 — Thermalrlght Peerless Assassin 120 SE CPU Air leads on cooling performa and noise level.

The Thermalright Peerless Assassin 120 SE offers better cooling performance with dual fans at a lower price, making it the more attractive option overall.

Why Thermalright Peerless Assassin 120 Mini Black CPU is better

Price

Mini Black is slightly more expensive.

Aesthetics

Mini Black has a fully blackened design.

Installation

Mini Black has a complete mounting kit.

Why Thermalrlght Peerless Assassin 120 SE CPU Air is better

Cooling

SE has dual fans for better cooling.

Price

SE is cheaper by $1.49.

Compatibility

SE has better layout for graphics card.

Overall score

Thermalright Peerless Assassin 120 Mini Black CPU
85
Thermalrlght Peerless Assassin 120 SE CPU Air
90

Specifications

SpecThermalright Peerless Assassin 120 Mini Black CPUThermalrlght Peerless Assassin 120 SE CPU Air
Heat Pipes66
Noise Level≤ 25.6 dB(A)≤ 25.6 dB(A)
MaterialAluminumAluminum/Copper
Socket SupportLGA 1150/1151/1155/1156/1200/1700/1851, AM4/AM5LGA 1150/1151/1155/1156/1200/1700/1851, AM4/AM5
Fan ModelTL-D12BTL-C12C

Dimension comparison

Thermalright Peerless Assassin 120 Mini Black CPUThermalrlght Peerless Assassin 120 SE CPU Air

Overview of the Products

The Thermalright Peerless Assassin 120 Mini Black CPU Cooler is priced at $34.39, while the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler is slightly cheaper at $32.90, making it about 4% less expensive. Both products are designed for effective CPU cooling with advanced features, catering to users who demand high performance for their gaming or computing setups.

Thermalright has established itself as a reliable brand in the CPU cooler market, and both coolers are equipped with AGHP technology, ensuring efficient heat dissipation. Despite their price difference, each model brings unique features catering to various user needs and preferences.

Design and Build Quality

When it comes to design, the Thermalright Peerless Assassin 120 Mini Black features a sleek, fully blackened aesthetic with an antioxidant coating, lending it a stylish look. In contrast, the Thermalrlght Peerless Assassin 120 SE boasts a brushed black top cover that enhances its visual appeal. Both coolers are built using aluminum and copper materials, ensuring durability and efficient thermal conductivity.

The dimensions of the Mini Black are 125mm x 110mm x 135mm, while the SE stands slightly taller at 125mm x 135mm x 155mm. The offset asymmetric layout of the SE model allows for better compatibility with graphics cards and motherboards, making it a strong contender for users with space constraints in their build.

Cooling Performance

Cooling performance is a vital aspect of any CPU cooler, and both models excel in this area. The Thermalright Peerless Assassin 120 Mini Black comes with a single 120mm PWM fan that operates at a maximum speed of 1500 RPM, providing a maximum airflow of 66.87 CFM. On the other hand, the Thermalrlght Peerless Assassin 120 SE incorporates dual 120mm TL-C12C PWM fans, which can reach a speed of 1550 RPM and a slightly lower airflow of 66.17 CFM.

While the Mini Black's single fan may suffice for casual users, the dual fan setup in the SE model offers enhanced cooling potential, especially during heavy usage or overclocking scenarios. This difference could be crucial for gamers or professionals who push their CPUs to the limit.

Noise Levels

Noise levels are a critical factor for many users when selecting a CPU cooler. The Thermalright Peerless Assassin 120 Mini Black operates at a noise level of ≤ 25.6 dB(A), which is quiet enough for most builds. The Thermalrlght Peerless Assassin 120 SE matches this noise level, also maintaining ≤ 25.6 dB(A) during operation.

Both coolers provide a silent operation, making them suitable for users who prefer a noise-free environment, whether for gaming, working, or media consumption. This parity in noise levels means that users can focus more on performance rather than sound output, regardless of their choice.

Installation and Compatibility

Installation ease and compatibility are essential considerations for CPU coolers. The Thermalright Peerless Assassin 120 Mini Black supports a wide range of Intel and AMD socket types, including Intel LGA 1150/1151/1155/1156/1200/1700/1851 and AMD AM4/AM5. It comes with an installation kit that simplifies the process for users.

Similarly, the Thermalrlght Peerless Assassin 120 SE supports the same CPU socket types, but it requires the original motherboard's built-in backplate for AM4 and AM5 installations, which is not included in the package. While both coolers provide excellent compatibility, the Mini Black has a slight edge in installation convenience due to its complete mounting kit.

Heat Dissipation Technology

Both coolers utilize AGHP technology to enhance heat dissipation efficiency. The Thermalright Peerless Assassin 120 Mini Black features six 6mm heat pipes that are fully plated, promoting better heat transfer. The SE model also incorporates six 6mm heat pipes, which are soldered to a copper base, ensuring rapid heat exchange.

The AGHP technology in both models effectively mitigates the gravity effect during vertical and horizontal installation, making them versatile for various setups. This shared technological foundation ensures that users of either cooler can expect reliable performance under high thermal loads.

Price Comparison

In terms of pricing, the Thermalright Peerless Assassin 120 Mini Black is available for $34.39, while the Thermalrlght Peerless Assassin 120 SE is priced at $32.90. This makes the SE about 4% cheaper than the Mini Black. For budget-conscious consumers, the SE offers a compelling value proposition without compromising on core features.

While the price difference may seem minimal, it can add up, especially for those looking to build multiple systems or upgrade existing ones. Choosing the more affordable option can free up budget for other components, enhancing overall system performance.

Which should you buy?

Choosing between the Thermalright Peerless Assassin 120 Mini Black and the Thermalrlght Peerless Assassin 120 SE ultimately depends on your specific needs. If you prioritize a dual-fan setup for enhanced cooling performance, particularly during heavy loads, the SE may be the better choice despite being slightly less visually appealing. Its lower price also adds to its attractiveness for budget buyers.

Conversely, if aesthetics and ease of installation are more critical to you, the Mini Black offers a sleek design and a straightforward installation process, making it an excellent option for users who value style alongside functionality. Ultimately, both coolers promise solid performance, but your individual priorities will dictate the best choice.