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Thermalright Assassin X 120 SE ARGB CPU Air Cooler vs Thermalright Peerless Assassin 120 SE V2 CPU Cooler

Updated August 2026The Thermalright Peerless Assassin 120 SE V2 offers superior cooling performance and features, making it the better choice for high-performance systems, while the Assassin X 120 SE ARGB is a budget-friendly option.

The Thermalright Peerless Assassin 120 SE V2 offers superior cooling performance and features, making it the better choice for high-performance systems, while the Assassin X 120 SE ARGB is a budget-friendly option.

Why Thermalright Assassin X 120 SE ARGB CPU Air Cooler is better

lower price

C$24.29 vs C$54.90

quieter operation

25.6 dB(A) vs 29.5 dB(A)

compact size

height of 148mm vs 155mm

Why Thermalright Peerless Assassin 120 SE V2 CPU Cooler is better

higher TDP

265W vs 225W

better airflow

88.19 CFM vs 66.17 CFM

dual fans

two fans vs one fan

Overall score

Thermalright Assassin X 120 SE ARGB CPU Air Cooler
65
Thermalright Peerless Assassin 120 SE V2 CPU Cooler
85

Specifications

SpecThermalright Assassin X 120 SE ARGB CPU Air CoolerThermalright Peerless Assassin 120 SE V2 CPU Cooler
TDP225W265W
Airflow66.17 CFM88.19 CFM
Noise Level25.6 dB(A)29.5 dB(A)
Fan Speed1550 RPM1850 RPM
Socket Support115X/1200/1700/AM4LGA 1851/1700/1200/AM4/AM5

Dimension comparison

Thermalright Assassin X 120 SE ARGB CPU Air CoolerThermalright Peerless Assassin 120 SE V2 CPU Cooler

Overview of Thermalright Assassin X 120 SE ARGB CPU Air Cooler

The Thermalright Assassin X 120 SE ARGB CPU Air Cooler is a well-regarded option in the CPU cooling market, priced at C$24.29. This cooler features a compact design with dimensions of 125mm in length, 71mm in width, and a height of 148mm, making it suitable for medium-sized cases. Weighing 0.645 kg, it combines an aluminum heat sink with efficient PWM fans that can reach a maximum airflow of 66.17 CFM while maintaining a noise level of up to 25.6 dB(A). The cooler is compatible with a range of Intel and AMD sockets, supporting TDP ratings from 125 to 225W, ensuring versatility for various builds.

Overview of Thermalright Peerless Assassin 120 SE V2 CPU Cooler

The Thermalright Peerless Assassin 120 SE V2 CPU Cooler is positioned as a high-performance option, priced at C$54.90. With dimensions of 125mm long, 135mm wide, and 155mm high, it is slightly bulkier than the Assassin X 120 SE ARGB. Weighing in at 0.610 kg, this cooler features an aluminium fin design on a pure copper base, leveraging six 6mm heat pipes to achieve a TDP of up to 265W. The dual thickened PWM fans can deliver an impressive airflow of 88.19 CFM at a maximum noise level of 29.5 dB(A), making it suitable for users seeking extreme cooling performance.

Design and Build Quality Comparison

In terms of design and build quality, the Thermalright Assassin X 120 SE ARGB is compact and lightweight, which can be advantageous for smaller cases. Its ARGB lighting adds an aesthetic appeal, making it attractive for gamers and PC enthusiasts. The materials used are robust, with a focus on durability. On the other hand, the Peerless Assassin 120 SE V2 boasts a more substantial build, utilising a combination of aluminium and copper, which generally enhances heat dissipation. The increased height and width of the Peerless model accommodate larger heat sinks and provide space for more efficient cooling, making it better suited for high-performance CPUs.

Cooling Performance

Cooling performance is a critical aspect of any CPU cooler, and here the Peerless Assassin 120 SE V2 takes the lead. With a TDP capacity of up to 265W, it is engineered for extreme cooling, making it ideal for overclocking and high-performance tasks. The dual fans operate at a maximum speed of 1850 RPM, offering higher airflow (88.19 CFM) than the Assassin X’s single fan configuration, which tops out at 1550 RPM and 66.17 CFM. This significant difference in airflow and TDP capability indicates that the Peerless model is designed for users who require superior cooling solutions for demanding applications.

Noise Levels

When it comes to noise levels, the Thermalright Assassin X 120 SE ARGB operates at a maximum of 25.6 dB(A), making it a quieter option for users prioritising a silent computing experience. In contrast, the Peerless Assassin 120 SE V2, while still within an acceptable range, has a maximum noise level of 29.5 dB(A). Although this is slightly louder, the increased performance may justify the trade-off for users who need more cooling power. Therefore, if noise level is a primary concern, the Assassin X would be the better choice, while the Peerless is suited for those willing to accept a bit more noise for enhanced cooling.

Compatibility and Installation

Both coolers offer compatibility with a variety of Intel and AMD sockets, including modern standards. The Thermalright Assassin X 120 SE ARGB supports Intel sockets 115X, 1200, 1700, and AMD AM4, while the Peerless Assassin 120 SE V2 is compatible with Intel LGA 1851, 1700, 1200, and 115X, as well as AMD AM4 and AM5 sockets. This compatibility ensures that either cooler can fit into a wide range of builds. Installation for both models is straightforward, with provided mounting plates and fasteners. However, the slightly larger dimensions of the Peerless model may require more consideration in terms of case space.

Price and Value for Money

Price is an essential factor for many consumers. The Thermalright Assassin X 120 SE ARGB is priced at C$24.29, making it accessible for budget-conscious builders seeking reliable cooling. In contrast, the Peerless Assassin 120 SE V2 is priced at C$54.90, reflecting its advanced features and superior cooling capabilities. While the higher price may deter some, the additional cooling performance and materials justify the cost for users with demanding setups. Ultimately, the choice will depend on one’s budget and cooling needs.

Which should you buy?

The choice between the Thermalright Assassin X 120 SE ARGB and the Thermalright Peerless Assassin 120 SE V2 ultimately hinges on your specific requirements. If you're looking for an affordable, compact cooler with decent performance and lower noise levels, the Assassin X 120 SE ARGB at C$24.29 is a solid choice. However, for users who require extreme cooling capabilities for high-performance systems, the Peerless Assassin 120 SE V2, despite its higher price of C$54.90, offers superior airflow and cooling potential. Evaluate your cooling needs, case space, and budget to make the best decision for your build.

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Thermalright Assassin X 120 SE ARGB CPU Air Cooler vs Thermalright Peerless Assassin 120 SE V2 CPU Cooler | versusfinder