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Thermalright Assassin X 120R Digital ARGB Black vs Thermalright Peerless Assassin 120 Mini Black CPU

Updated August 2026 — Thermalright Assassin X 120R Digital ARGB Black leads on fan technology and cooling performa.

The Thermalright Assassin X 120R offers superior cooling performance and additional features at a lower price, making it the better choice overall.

Why Thermalright Assassin X 120R Digital ARGB Black is better

Cooling Performance

Higher fan speed of 2000RPM

Price

Lower price at $22.90

Features

Includes digital screen and ARGB lighting

Why Thermalright Peerless Assassin 120 Mini Black CPU is better

Heat Pipes

More heat pipes (6 vs 4)

Compact Size

Smaller dimensions for tight builds

Noise Level

Specified noise level of 25.6dB(A)

Overall score

Thermalright Assassin X 120R Digital ARGB Black
85
Thermalright Peerless Assassin 120 Mini Black CPU
78

Specifications

SpecThermalright Assassin X 120R Digital ARGB BlackThermalright Peerless Assassin 120 Mini Black CPU
Fan Speed2000RPM1500RPM
Price$22.90$34.39
Heat Pipe TechAGHPAGHP
ARGB LightingYesNo
Noise LevelNot specified25.6dB(A)

Dimension comparison

Thermalright Assassin X 120R Digital ARGB BlackThermalright Peerless Assassin 120 Mini Black CPU

Overview of the Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler

The Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler is priced at $22.90. It features a robust design with a 2000RPM PWM fan, making it an excellent choice for high-performance cooling. This cooler is equipped with four heat pipes utilizing AGHP technology, optimizing heat dissipation performance and ensuring compatibility with a variety of CPU sockets including AM4, AM5, and Intel LGA1700.

The cooler’s height of 151mm allows it to fit in most cases without sacrificing cooling efficiency. Additionally, the digital screen on the top cover not only enhances its aesthetic appeal but also provides real-time temperature information when connected to the motherboard. With a price that undercuts many competitors, the Thermalright Assassin X offers great value for users seeking effective cooling solutions.

Overview of the Thermalright Peerless Assassin 120 Mini Black CPU Cooler

The Thermalright Peerless Assassin 120 Mini Black CPU Cooler comes at a higher price point of $34.39. This cooler distinguishes itself with six heat pipes, which are also designed with AGHP technology, providing superior heat dissipation capabilities. It operates with a slightly lower fan speed of 1500RPM, yet still manages to deliver impressive cooling performance.

The design of the Peerless Assassin 120 Mini is compact, measuring 125mm x 110mm x 135mm. This makes it a suitable option for smaller builds where space is at a premium. The cooler is compatible with a wide range of CPU sockets, similar to the Assassin X, supporting both AMD and Intel platforms. Although it is more expensive, the additional heat pipes may justify the investment for users looking for enhanced cooling in tight spaces.

Cooling Performance Comparison

In terms of cooling performance, the Thermalright Assassin X 120R stands out with its higher fan speed of 2000RPM compared to the 1500RPM of the Peerless Assassin 120 Mini. This difference translates into potentially better airflow and cooling efficiency, particularly under heavy loads. The Assassin X’s four heat pipes efficiently manage heat dissipation, but the additional two heat pipes in the Peerless Assassin may provide marginally better thermal performance due to increased surface area for heat transfer.

While both coolers utilize AGHP technology, the effectiveness of heat management can vary based on system configuration and workload. Enthusiasts may prefer the Assassin X for its higher RPM and design features, while those with constrained space might lean towards the Peerless Assassin for its compact form factor.

Aesthetics and Design Features

When it comes to aesthetics, the Thermalright Assassin X 120R includes a digital screen on the top cover that enhances its modern look and provides functional monitoring of CPU temperature when connected to the motherboard. The ARGB lighting adds a vibrant touch, allowing for color synchronization with other components, which is a significant draw for gamers and PC builders who prioritize visual appeal.

On the other hand, the Thermalright Peerless Assassin 120 Mini features a fully blackened body with an antioxidant coating and CNC precision micro-engraved copper base. Although it lacks the digital screen of the Assassin X, its sleek design and symmetrical mech-type fins offer a clean and professional appearance. Users looking for aesthetics may find both coolers appealing, albeit for different reasons.

Noise Level and Fan Technology

Noise levels are an essential factor when selecting a CPU cooler, and the thermal performance can be influenced by the noise produced during operation. The Thermalright Assassin X features a PWM fan that operates quietly and can adjust its speed based on temperature demands. The noise levels are not explicitly stated, but the design aims to minimize sound during operation.

Conversely, the Peerless Assassin 120 Mini specifies a maximum noise level of 25.6dB(A), which is relatively quiet for a CPU cooler of its class. The S-FDB bearing technology employed in both coolers suggests durability and low noise levels, but users seeking the quietest option may prefer the Peerless Assassin given its explicitly defined noise specifications.

Compatibility and Installation

Both the Thermalright Assassin X and the Peerless Assassin 120 Mini offer extensive compatibility with various CPU sockets, including AMD and Intel platforms. The Assassin X is compatible with AM4, AM5, and several Intel LGA sockets, making it versatile for different builds. Its height of 151mm also ensures it fits in most standard cases.

The Peerless Assassin 120 Mini, while slightly more compact, is equally adaptable, supporting the same range of CPU sockets. However, its smaller dimensions and lighter weight may make it easier to install in cramped environments. Both coolers come with appropriate mounting kits, simplifying the installation process for users.

Price and Value Assessment

The Thermalright Assassin X 120R is priced at $22.90, making it about 17% cheaper than the Thermalright Peerless Assassin 120 Mini, which retails for $34.39. The price difference may be significant for budget-conscious consumers, particularly given that both products offer commendable cooling performance.

For users who prioritize value, the Assassin X provides an excellent balance of price and performance, especially with its additional features like the digital screen and higher RPM. In contrast, the Peerless Assassin, while more expensive, may attract those looking for a compact solution with enhanced heat pipe technology.

Which should you buy?

Choosing between the Thermalright Assassin X 120R and the Peerless Assassin 120 Mini largely depends on your specific needs and preferences. If you need a powerful cooler with higher RPM and additional features like a digital screen and ARGB lighting, the Assassin X is a compelling choice at $22.90. However, if you're working with a small form factor build and prefer a cooler that is still effective yet more compact, the Peerless Assassin Mini may be worth the higher investment at $34.39. Ultimately, both coolers deliver excellent performance, making them solid options in the CPU cooler market.