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Thermalright Peerless Assassin 120 SE CPU Cooler vs Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi

Updated August 2026The Thermalright Peerless Assassin 120 SE offers superior performance and quieter operation, making it the better choice for high-end builds. However, the Assassin X 120R provides excellent value for budget-conscious users.

The Thermalright Peerless Assassin 120 SE offers superior performance and quieter operation, making it the better choice for high-end builds. However, the Assassin X 120R provides excellent value for budget-conscious users.

Why Thermalright Peerless Assassin 120 SE CPU Cooler is better

better airflow

Peerless has 66.17 CFM vs Assassin X's unspecified airflow

quieter operation

Peerless operates at 25.6 dB(A) vs Assassin X's higher noise

dual tower design

Peerless features a dual tower configuration for better heat dissipation

Why Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi is better

lower price

Assassin X is priced at C$28.39 vs Peerless at C$48.90

higher fan speed

Assassin X fan speed reaches 2000 RPM vs Peerless's 1550 RPM

digital display

Assassin X includes a digital screen for monitoring temperatures

Overall score

Thermalright Peerless Assassin 120 SE CPU Cooler
85
Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi
75

Specifications

SpecThermalright Peerless Assassin 120 SE CPU CoolerThermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi
Max RPM15502000
Airflow66.17 CFMunknown
Noise Level25.6 dB(A)higher
Socket CompatibilityIntel/AMDIntel/AMD
ARGB Fans21

Dimension comparison

Thermalright Peerless Assassin 120 SE CPU CoolerThermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi

Overview of Thermalright Peerless Assassin 120 SE CPU Cooler

The Thermalright Peerless Assassin 120 SE CPU Cooler is priced at C$48.90 and designed for high performance. This cooler boasts a dual tower heatsink configuration that enhances heat dissipation through its six 6mm copper heat pipes equipped with AGHP technology. The cooler dimensions are 125mm x 135mm x 155mm, fitting well in mid to large cases. It features two high-performance ARGB fans that operate at a maximum speed of 1550 RPM, contributing to an air flow of 66.17 CFM while maintaining a noise level of 25.6 dB(A). Its compatibility spans a wide range of Intel and AMD sockets, making it a versatile choice for many builds.

Overview of Thermalright Assassin X 120R Digital ARGB White CPU Cooler

The Thermalright Assassin X 120R Digital ARGB White CPU Cooler is a more budget-friendly option at C$28.39, yet it still offers impressive performance. This single-tower cooler is equipped with four 6mm heat pipes and features a high-speed fan capable of reaching 2000 RPM, allowing for effective heat dissipation. The cooler includes a digital screen on the top cover that displays real-time CPU and GPU temperatures, as well as usage metrics, providing valuable monitoring information. Its design, which incorporates AGHP technology, ensures optimal performance whether mounted vertically or horizontally, and it is compatible with a variety of Intel and AMD sockets.

Performance Comparison

In terms of performance, the Peerless Assassin 120 SE outshines the Assassin X 120R with its dual tower configuration and superior airflow of 66.17 CFM compared to the latter’s single tower design. The Peerless operates at a maximum fan speed of 1550 RPM, which is lower than the Assassin X's 2000 RPM but compensates with its dual fans for better heat dissipation. Additionally, the Peerless boasts a quieter operation with a noise level of 25.6 dB(A), while the Assassin X’s higher fan speed may result in increased noise. This makes the Peerless a better choice for users prioritizing thermal performance and low noise.

Design and Aesthetics

When it comes to design, both coolers feature ARGB lighting, but the Peerless Assassin 120 SE shines with its dual ARGB fans that create a vibrant lighting effect. The Assassin X 120R, however, includes a unique digital screen on its top cover that not only adds a modern touch but also provides real-time data on CPU and GPU temperatures. While the aesthetic appeal of the Peerless lies in its lighting, the Assassin X offers an innovative functional design that enhances user experience by allowing monitoring without additional software.

Noise Levels

Noise levels are an essential consideration for many users looking for a CPU cooler. The Peerless Assassin 120 SE operates at a maximum noise level of 25.6 dB(A), making it a quieter option for those who work in noise-sensitive environments. On the other hand, the Assassin X 120R, with its higher maximum fan speed of 2000 RPM, may produce more noise, especially under load. This difference in operational sound means that the Peerless may be more suitable for gaming or professional setups where silence is valued.

Installation and Compatibility

Both coolers offer wide compatibility with various Intel and AMD sockets, making them versatile choices for most builds. However, the Peerless requires the original motherboard backplate for installation on AM4 and AM5 sockets, which may complicate installation for some users. Conversely, the Assassin X does not mention this requirement, potentially making it easier to install. Additionally, the Peerless comes with a more robust installation system, ensuring better contact with the CPU for optimal heat transfer.

Durability and Build Quality

Durability is a key factor when selecting a CPU cooler, and both models demonstrate high-quality build materials. The Peerless Assassin 120 SE features a combination of aluminum and copper in its heatsink, providing excellent thermal conductivity. The Assassin X 120R also uses nickel-plated heat pipes, enhancing corrosion resistance. While both coolers are built to last, the Peerless may have the edge in thermal performance due to its dual-tower design and the advanced materials used.

Which should you buy?

Choosing between the Thermalright Peerless Assassin 120 SE and the Assassin X 120R comes down to your specific needs. If you prioritize performance, quieter operation, and superior heat dissipation, the Peerless Assassin 120 SE is worth the extra investment at C$48.90. However, if you're looking for a more budget-friendly option that still offers solid performance and unique features like a digital temperature display, the Assassin X 120R at C$28.39 is an excellent choice. Ultimately, both coolers are solid options, but your decision will depend on whether you value performance over aesthetics or vice versa.

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Thermalright Peerless Assassin 120 SE CPU Cooler vs Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi | versusfinder