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Thermalright Assassin X 120R SE V2 CPU Cooler, 4× vs Thermalright Peerless Assassin 120 SE V2 CPU

Updated August 2026 — Thermalright Assassin X 120R SE V2 CPU Cooler, 4× wins on noise level and value for money, Thermalright Peerless Assassin 120 SE V2 CPU wins on cooling efficien and build quality.

The Thermalright Peerless Assassin 120 SE V2 offers superior cooling performance and efficiency, making it the better choice for high-demand tasks. However, the Assassin X 120R SE V2 is a more budget-friendly option for basic computing needs.

Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better

Price

Assassin X 120R SE V2 is significantly cheaper.

Noise Level

Quieter operation at 25.6 dB(A).

Compact Design

More suitable for smaller cases.

Why Thermalright Peerless Assassin 120 SE V2 CPU is better

Cooling Performance

Higher airflow of 88.89 CFM.

Heat Pipes

More heat pipes (6 vs 4) for better heat dissipation.

Fan Speed

Higher max fan speed of 1850 RPM.

Overall score

Thermalright Assassin X 120R SE V2 CPU Cooler, 4×
75
Thermalright Peerless Assassin 120 SE V2 CPU
88

Specifications

SpecThermalright Assassin X 120R SE V2 CPU Cooler, 4×Thermalright Peerless Assassin 120 SE V2 CPU
Max RPM15501850
Airflow66.17 CFM88.89 CFM
Noise Level25.6 dB(A)29.5 dB(A)
Socket SupportAMD AM4/AM5, Intel LGA1150-1700AMD AM4/AM5, Intel LGA1700/1851
Fan TypePWM RGBPWM

Dimension comparison

Thermalright Assassin X 120R SE V2 CPU Cooler, 4×Thermalright Peerless Assassin 120 SE V2 CPU

Overview of the Thermalright Assassin X 120R SE V2 CPU Cooler

The Thermalright Assassin X 120R SE V2 is a budget-friendly CPU cooler priced at $16.59. This model is designed for users seeking efficient cooling solutions without the hefty price tag. It features a single tower design, equipped with four 6mm heat pipes and a 120mm RGB PWM fan that operates at a maximum speed of 1550 RPM. The cooler's efficient airflow and noise level of 25.6 dB(A) make it suitable for quiet computing environments. Additionally, it is compatible with a wide range of AMD and Intel sockets, ensuring versatility for various builds.

Overview of the Thermalright Peerless Assassin 120 SE V2 CPU Cooler

In contrast, the Thermalright Peerless Assassin 120 SE V2 is positioned at a higher price point of $38.99. This cooler features a dual tower design with six heat pipes and two 120mm PWM fans that can reach a speed of up to 1850 RPM. With an airflow capacity of 88.89 CFM and a noise level of 29.5 dB(A), it aims to provide superior cooling performance, especially for high-load tasks such as gaming and multitasking. Its compatibility with both AMD and Intel platforms makes it a solid choice for modern desktop builds.

Design and Build Quality

The design of the Thermalright Assassin X 120R SE V2 emphasizes compactness and efficiency. Measuring 120(L)x71(W)x148(H) mm, it fits well in medium-sized cases, while its aluminum heat sink and metal fasteners enhance durability. The RGB fan adds an aesthetic touch, appealing to gamers and PC builders who value visuals.

On the other hand, the Thermalright Peerless Assassin 120 SE V2, measuring 125mm x 110mm x 155mm without fans, boasts a dual tower structure that significantly improves thermal performance. The dual fans and six heat pipes work together to maximize heat dissipation, making it a robust option for high-performance systems. The use of pure copper in its base enhances thermal conductivity, further solidifying its build quality.

Cooling Performance

When it comes to cooling performance, the Thermalright Assassin X 120R SE V2 provides commendable cooling for its size, primarily due to its four heat pipes. However, it operates at a maximum fan speed of 1550 RPM, which may limit its performance in high-demand scenarios.

Conversely, the Peerless Assassin 120 SE V2 shines with its dual fan setup and six heat pipes, allowing for a maximum fan speed of 1850 RPM. This increased airflow (88.89 CFM) results in superior cooling capabilities, making it more suitable for gaming and multitasking. Users looking for exceptional cooling performance will likely find the Peerless model to be the better option, especially under heavy loads.

Noise Levels

Noise output is an essential factor for many users, especially those who prioritize a quiet work environment. The Thermalright Assassin X 120R SE V2 operates at a maximum noise level of 25.6 dB(A), which is relatively quiet for a CPU cooler. This characteristic makes it an excellent choice for users who want efficient cooling without the distraction of loud fans.

In comparison, the Thermalright Peerless Assassin 120 SE V2 has a maximum noise level of 29.5 dB(A). While this is slightly higher than its counterpart, the increased performance may justify the trade-off for users who require better cooling under load. Ultimately, both coolers are relatively quiet, but the Assassin X 120R SE V2 offers a more silent operation.

Compatibility

Compatibility is a crucial aspect when choosing a CPU cooler, and both models offer broad socket support. The Thermalright Assassin X 120R SE V2 supports Intel sockets including LGA1150, 1151, 1155, 1156, 1200, and 1700, as well as AMD AM4 and AM5. This versatility makes it a practical option for various builds.

Similarly, the Thermalright Peerless Assassin 120 SE V2 is compatible with AMD AM4 and AM5 and Intel LGA1851 and 1700 sockets. This compatibility ensures that both coolers can cater to a wide range of modern processors, making them suitable for most users looking to upgrade their cooling solutions without worrying about socket mismatch.

Price Comparison

Price is a significant differentiator between the two coolers. The Thermalright Assassin X 120R SE V2 is priced at $16.59, making it a budget-friendly option, about 57% cheaper than the Peerless Assassin 120 SE V2, which retails for $38.99. This price difference can be a decisive factor for users who are building or upgrading their systems on a tight budget.

However, while the Peerless model is more expensive, it offers enhanced performance and cooling capabilities that may justify the additional cost for users engaged in demanding tasks. The value proposition of each cooler largely depends on the user’s specific cooling needs and budget constraints.

Which should you buy?

In conclusion, the decision between the Thermalright Assassin X 120R SE V2 and the Thermalright Peerless Assassin 120 SE V2 boils down to your cooling requirements and budget. If you're looking for a cost-effective and quiet solution for basic computing, the Assassin X 120R SE V2 is an excellent choice at just $16.59. However, if you require superior cooling performance for gaming or high-load applications, the Peerless Assassin 120 SE V2, despite its higher price of $38.99, delivers better thermal efficiency and airflow. Ultimately, consider your specific needs and budget to make the best choice.