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Thermalright Assassin X 120R Digital ARGB Black vs Thermalrlght Peerless Assassin 120 SE CPU Air

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

The Thermalright Assassin X 120R offers excellent value with real-time monitoring, while the Peerless Assassin 120 SE excels in cooling performance and quieter operation.

Why Thermalright Assassin X 120R Digital ARGB Black is better

Price

Assassin X 120R is cheaper at $24.90

Digital Display

Real-time monitoring of CPU and GPU stats

Compact Size

Fits in most cases easily

Why Thermalrlght Peerless Assassin 120 SE CPU Air is better

Cooling Performance

Dual tower design with better heat dissipation

Noise Level

Quieter operation at 25.6 dB(A)

Build Quality

Robust design with AGHP technology

Overall score

Thermalright Assassin X 120R Digital ARGB Black
75
Thermalrlght Peerless Assassin 120 SE CPU Air
82

Specifications

SpecThermalright Assassin X 120R Digital ARGB BlackThermalrlght Peerless Assassin 120 SE CPU Air
Fan Speed2000RPM1550RPM
Heat Pipes46
CompatibilityAM4/AM5, LGA 1851/1700AM4/AM5, LGA 1150/1151/1155/1156/1200/1700
MaterialAluminumAluminum/Copper
Installation EaseEasyModerate

Dimension comparison

Thermalright Assassin X 120R Digital ARGB BlackThermalrlght Peerless Assassin 120 SE CPU Air

Introduction

When it comes to CPU coolers, the Thermalright Assassin X 120R Digital ARGB Black and the Thermalrlght Peerless Assassin 120 SE stand out as two compelling options. Both coolers are designed to enhance your CPU's performance, but they offer different features and price points. The Assassin X 120R is priced at $24.90, while the Peerless Assassin 120 SE is available for $32.90, making the latter about 32% more expensive. This article will delve into various aspects of each cooler to help you determine which one meets your needs.

Design and Aesthetics

The Assassin X 120R features a sleek design with a digital screen top cover that displays real-time CPU and GPU statistics. Its dimensions are compact at 120x71x151mm, allowing it to fit in most cases without compromising heat dissipation. In contrast, the Peerless Assassin 120 SE boasts an anodized brushed black top cover and a more robust build with a dual tower design, measuring 125x135x155mm. While both coolers have an appealing aesthetic, the digital display on the Assassin X 120R may be more attractive to users who appreciate real-time monitoring.

Cooling Performance

Cooling performance is crucial for maintaining optimal CPU temperatures. The Assassin X 120R employs a single tower design with a 2000RPM fan that can push an air volume of 70.84CFM. This setup is designed to effectively dissipate heat while operating at a noise level of 29.8 dB(A). On the other hand, the Peerless Assassin 120 SE features a dual tower configuration and two high-performance fans that operate at a maximum speed of 1550RPM, producing 66.17CFM and a quieter noise level of 25.6 dB(A). While the Assassin X 120R has a higher airflow capacity, the dual fans in the Peerless SE may provide more stable cooling over extended periods.

Compatibility

Both coolers offer wide compatibility with Intel and AMD sockets. The Assassin X 120R supports Intel LGA 1851/1700/1150/1151/1155/1156/1200 and AMD AM4/AM5 platforms. Similarly, the Peerless Assassin 120 SE is compatible with Intel LGA 1150/1151/1155/1156/1200/1700 and AMD AM4/AM5 as well. However, it's worth noting that both coolers require the use of the motherboard's original backplate for installation on AMD platforms. This level of compatibility makes either cooler a solid choice for users with various CPU setups.

Installation Ease

When it comes to installation, both coolers come with their own sets of challenges. The Assassin X 120R includes installation accessories and is designed for straightforward setup, aided by installation videos and manuals. Conversely, the Peerless Assassin 120 SE features an SS2 install system that is intended to enhance contact with the CPU. However, it may require more attention to ensure the dual tower heatsink aligns properly. While both coolers aim for user-friendly installation, the Assassin X 120R may have a slight edge due to its focus on simplicity.

Noise Level

Noise levels are an important consideration for users who prioritize a quiet computing environment. The Assassin X 120R operates at a maximum noise level of 29.8 dB(A), which is noticeable but not overly disruptive. The Peerless Assassin 120 SE, with its dual fans, operates at a lower maximum noise level of 25.6 dB(A). This means that if silence is a priority, the Peerless Assassin 120 SE might be the better choice, offering a quieter experience while maintaining effective cooling performance.

Technology Features

The Assassin X 120R comes equipped with a digital screen that allows users to monitor CPU temperature, usage, and even graphics card status in real-time. This feature adds a level of interactivity that some users may find appealing. In contrast, the Peerless Assassin 120 SE does not offer such a display but incorporates AGHP technology with six heat pipes designed for efficient heat transfer. While the technology in the Peerless SE is focused on enhancing cooling performance, the digital display of the Assassin X 120R may be more attractive to tech enthusiasts.

Price Point

The price difference between these two coolers is significant, with the Assassin X 120R retailing at $24.90 and the Peerless Assassin 120 SE at $32.90. This means that the Peerless SE is about 32% more expensive than the Assassin X 120R. While the higher price may be justified by its dual-fan design and additional heat pipes, the Assassin X 120R offers excellent value for those seeking a budget-friendly option without sacrificing essential cooling capabilities.

Which should you buy?

Choosing between the Thermalright Assassin X 120R Digital ARGB Black and the Thermalrlght Peerless Assassin 120 SE ultimately depends on your specific needs. If you're looking for a cost-effective solution with real-time monitoring capabilities, the Assassin X 120R at $24.90 stands out as an excellent option. However, if you prioritize cooling performance, quieter operation, and advanced technology, the Peerless Assassin 120 SE, despite its higher price of $32.90, may be the better investment. Both coolers offer solid performance, but your choice should align with your cooling needs, aesthetic preferences, and budget considerations.