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Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler vs Thermalright Assassin X 90 SE V2 CPU Cooler

Updated August 2026The Thermalright Peerless Assassin 120 SE ARGB offers superior cooling performance and features compared to the Assassin X 90 SE V2, making it the better choice for high-performance builds.

The Thermalright Peerless Assassin 120 SE ARGB offers superior cooling performance and features compared to the Assassin X 90 SE V2, making it the better choice for high-performance builds.

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

Cooling Capacity

Handles TDP up to 245W

ARGB Lighting

Features dynamic ARGB effects

Airflow

Higher airflow of 66.17 CFM

Why Thermalright Assassin X 90 SE V2 CPU Cooler is better

Price

Lower price at C$24.90

Noise Level

Quieter operation at 23.85 dB(A)

Compact Size

Smaller dimensions for easier installation

Overall score

Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
85
Thermalright Assassin X 90 SE V2 CPU Cooler
65

Specifications

SpecThermalright Peerless Assassin 120 SE ARGB CPU Air CoolerThermalright Assassin X 90 SE V2 CPU Cooler
TDP120-245WN/A
Max RPM15002200
Airflow66.17 CFM32.77 CFM
Noise Level25.6 dB(A)23.85 dB(A)
Socket SupportIntel: 115X/1200/1700, AMD: AM4Intel: 1150/1151/1155/1156/1200, AMD: AM4/AM5

Dimension comparison

Thermalright Peerless Assassin 120 SE ARGB CPU Air CoolerThermalright Assassin X 90 SE V2 CPU Cooler

Overview of Thermalright Peerless Assassin 120 SE ARGB and Thermalright Assassin X 90 SE V2

The Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is positioned as a premium cooling solution, while the Thermalright Assassin X 90 SE V2 CPU Cooler offers a more budget-friendly option. The Peerless Assassin is priced at C$46.90, making it significantly more expensive than the Assassin X, which is priced at C$24.90. This price difference raises questions about the performance and features of each cooler.

The Peerless Assassin boasts advanced features like double tower cooling and ARGB lighting, while the Assassin X focuses on compact design and efficiency. Understanding these differences can help potential buyers make an informed choice based on their specific cooling needs and budget constraints.

Cooling Performance Comparison

When it comes to cooling performance, the Thermalright Peerless Assassin 120 SE ARGB is designed to handle a TDP (Thermal Design Power) of 120 to 245W, which is notably higher than the Assassin X 90 SE V2's capabilities. The Peerless Assassin employs six heat pipes and features a powerful fan that can reach speeds of up to 1500 RPM, providing an airflow of 66.17 CFM at a noise level of 25.6 dB(A).

In contrast, the Assassin X 90 SE V2 utilises four heat pipes and offers a maximum fan speed of 2200 RPM, with an airflow of 32.77 CFM and a lower noise level of 23.85 dB(A). While the Assassin X is quieter, its lower airflow and cooling capacity may not be sufficient for high-performance CPUs, especially under heavy loads. Therefore, for serious overclocking or resource-intensive tasks, the Peerless Assassin is likely to offer superior cooling performance.

Build Quality and Design

Build quality and design are crucial factors in determining the overall effectiveness of a CPU cooler. The Thermalright Peerless Assassin features a double tower design, which not only enhances cooling efficiency but also provides a striking visual with its ARGB lighting effects. With dimensions of 125(L)x135(W)x155(H)mm, it is larger and potentially more cumbersome to install in compact cases.

On the other hand, the Assassin X 90 SE V2 is designed with a more compact footprint at 94(L)x77(W)x118(H)mm, making it suitable for a wider range of chassis models. Its use of HDT (Heatpipe Direct Touch) technology allows for efficient heat transfer, while its industrial-grade materials promise durability. Both coolers are well-built, but the Peerless Assassin's size and aesthetic may appeal to users looking for both performance and style.

Compatibility and Installation

Compatibility and ease of installation are essential considerations for any CPU cooler. The Thermalright Peerless Assassin supports a wide range of Intel and AMD sockets, including Intel 115X/1200/1700 and AMD AM4, with appropriate mounting hardware provided. This versatility makes it a great choice for users with various system configurations.

The Assassin X 90 SE V2 also offers broad compatibility, supporting Intel sockets 1150/1151/1155/1156/1200 and AMD AM4/AM5. However, its smaller size may make it easier to install in tighter spaces. Both coolers come with installation instructions and necessary mounting parts, ensuring that users can get them up and running without excessive hassle.

Noise Levels

Noise levels are a critical factor for many users, particularly those building quiet systems. The Thermalright Peerless Assassin operates at a maximum noise level of 25.6 dB(A), which is relatively quiet for a cooler of its performance level. However, it does produce more noise than the Assassin X 90 SE V2, which operates at a maximum noise level of just 23.85 dB(A).

While the difference in noise levels may seem minor, it can be noticeable in quieter environments. Users who prioritise silent operation may prefer the Assassin X, whereas those seeking maximum cooling performance may be willing to tolerate a little extra noise from the Peerless Assassin.

ARGB Features

ARGB lighting has become increasingly popular among PC builders who want to customise their systems. The Thermalright Peerless Assassin 120 SE ARGB features colourful and dynamic ARGB lighting effects that add visual appeal to any build. This cooler allows users to sync lighting effects with other ARGB components for a cohesive look.

In contrast, the Assassin X 90 SE V2 does not mention any ARGB features, focusing instead on performance and a more utilitarian design. For users who value aesthetics and want their components to shine, the Peerless Assassin is the clear winner. However, for those who prioritise function over form, the Assassin X still offers solid performance at a lower price point.

Price and Value

Price is often a deciding factor when choosing between two products, and in this case, the Thermalright Peerless Assassin 120 SE ARGB is priced at C$46.90, while the Assassin X 90 SE V2 is available for only C$24.90. The significant price difference of C$22 can influence buyers based on their budget and performance requirements.

While the Peerless Assassin offers advanced features and higher cooling capacity, the Assassin X provides sufficient performance for less demanding users at a much lower cost. Buyers must weigh whether the additional features and cooling power of the Peerless Assassin justify the higher price or if the Assassin X meets their needs adequately.

Which should you buy?

Choosing between the Thermalright Peerless Assassin 120 SE ARGB and the Thermalright Assassin X 90 SE V2 ultimately depends on your specific needs and budget. If you require superior cooling performance, ARGB lighting, and don't mind spending a little extra, the Peerless Assassin is the better option. It excels in performance, cooling capacity, and aesthetic appeal, making it ideal for high-performance builds.

Conversely, if you're looking for an effective, quieter cooler that fits a tighter budget and have moderate cooling needs, the Assassin X 90 SE V2 is an excellent choice. Its compact design and solid performance make it suitable for less demanding applications. Ultimately, your choice should align with your performance requirements and aesthetic preferences.

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Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler vs Thermalright Assassin X 90 SE V2 CPU Cooler | versusfinder