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Thermalright Peerless Assassin 140 Black CPU Cooler vs Thermalright Assassin X 120R SE V2 CPU Air Cooler

Updated August 2026The Thermalright Peerless Assassin 140 Black offers superior cooling performance and features compared to the Assassin X 120R SE V2, making it the better choice for high-end systems.

The Thermalright Peerless Assassin 140 Black offers superior cooling performance and features compared to the Assassin X 120R SE V2, making it the better choice for high-end systems.

Why Thermalright Peerless Assassin 140 Black CPU Cooler is better

Cooling Performance

Dual fans and twin-tower design provide better heat dissipation.

Build Quality

More advanced design with pure copper heat pipes.

Height Compatibility

Suitable for larger chassis and high-profile components.

Why Thermalright Assassin X 120R SE V2 CPU Air Cooler is better

Price

More affordable option for budget-conscious users.

Compact Size

Easier to fit in medium-sized cases.

Noise Level

Both coolers operate at similar noise levels.

Overall score

Thermalright Peerless Assassin 140 Black CPU Cooler
85
Thermalright Assassin X 120R SE V2 CPU Air Cooler
70

Specifications

SpecThermalright Peerless Assassin 140 Black CPU CoolerThermalright Assassin X 120R SE V2 CPU Air Cooler
BrandThermalrightThermalright
Socket SupportLGA1150/1700, AM4/AM5LGA1150/1700, AM4/AM5
Noise Level≤25.6 dB(A)≤25.6 dB(A)
Fan TypeDual PWMSingle PWM
Cooling TypeAirAir

Dimension comparison

Thermalright Peerless Assassin 140 Black CPU CoolerThermalright Assassin X 120R SE V2 CPU Air Cooler

Overview of Thermalright Peerless Assassin 140 Black and Thermalright Assassin X 120R SE V2

The Thermalright Peerless Assassin 140 Black is priced at C$54.90, while the Thermalright Assassin X 120R SE V2 is significantly more affordable at C$23.59. This price difference reflects varying features and capabilities between the two CPU coolers, making them suitable for different consumer needs.

The Peerless Assassin 140 Black features a more robust design, including a twin-tower body, pure copper heat pipes, and high-performance dual fans, aimed at delivering superior heat dissipation. In contrast, the Assassin X 120R SE V2, while compact and effective, uses a single tower design and is targeted at users seeking a budget-friendly option without sacrificing too much performance.

Design and Build Quality

The design of the Thermalright Peerless Assassin 140 Black is a clear standout, boasting a height of 158mm and a dual-tower structure that enhances its cooling capabilities. This cooler is suitable for large and medium-sized chassis, allowing for better compatibility with high-profile memory and graphics cards. It features all-aluminium fins for maximum cooling area and includes dual PWM fans that can achieve speeds of up to 1500 RPM.

On the other hand, the Thermalright Assassin X 120R SE V2 is more compact, with a height of 148mm. While it’s suitable for medium-sized cases and avoids blocking memory installation, its design is less intricate than that of the Peerless Assassin. Both coolers are made from durable materials, but the more advanced design of the Peerless Assassin provides it with an edge in overall cooling efficiency.

Cooling Performance

Cooling performance is where the Thermalright Peerless Assassin 140 Black truly shines. Its dual fans, operating at 1500 RPM, create a powerful airflow of 66.17 CFM, which is crucial for dissipating heat effectively. The combination of a twin-tower design and pure copper heat pipes allows for superior heat transfer, making it ideal for high-performance CPUs.

In contrast, the Thermalright Assassin X 120R SE V2 also has a maximum airflow of 66.17 CFM but achieves this with a single tower and slightly lower RPM of 1550. While it maintains a similar noise level of ≤25.6dB (A), the cooling performance may not match that of the Peerless Assassin, particularly under heavy loads. Users with high-performance systems may prefer the enhanced cooling capabilities of the Peerless Assassin.

Noise Levels

Both products are designed with noise reduction in mind, achieving a noise level of ≤25.6 dB (A) during operation. This means that both the Thermalright Peerless Assassin 140 Black and the Thermalright Assassin X 120R SE V2 provide a quiet computing experience, which is a critical factor for gamers and professionals alike.

The design of the Peerless Assassin, with its dual fans, may contribute to a more efficient cooling process without increasing noise levels, while the single fan of the Assassin X 120R SE V2 is also optimized for quiet operation. Users seeking a silent cooling solution will be pleased with either option, but the Peerless Assassin may handle demanding tasks with less strain.

Compatibility

Compatibility is an essential aspect when choosing a CPU cooler, and both the Thermalright Peerless Assassin 140 Black and the Thermalright Assassin X 120R SE V2 excel in this area. The Peerless Assassin supports a wide range of CPU sockets, including Intel’s LGA1150, LGA1200, and AMD’s AM4 and AM5, making it versatile for various builds.

Similarly, the Assassin X 120R SE V2 is compatible with several Intel and AMD socket types, including LGA1150, LGA1200, AM4, and AM5. This broad compatibility ensures that both coolers can cater to different user needs, whether building a new system or upgrading an existing one.

Installation Process

The installation process of the Thermalright Peerless Assassin 140 Black is facilitated by its all-metal fasteners and SS2 buckle system, designed for ease of use. Its dual tower and dual fans also feature a Y-type adapter cable, which simplifies the connection process, particularly when motherboard ports are limited.

The Assassin X 120R SE V2 also offers a straightforward installation experience, with mounting plates and fasteners provided for various CPU sockets. This cooler is designed to be installed according to clear video instructions, making it accessible for users of all skill levels. Both coolers ensure a user-friendly installation, but the additional features of the Peerless Assassin may offer a slight advantage in terms of convenience.

Price and Value Proposition

When considering price, the Thermalright Peerless Assassin 140 Black at C$54.90 represents a higher investment compared to the Thermalright Assassin X 120R SE V2, which is priced at C$23.59. This significant price difference reflects the enhanced features and performance capabilities of the Peerless Assassin.

For users on a budget or those who do not require high-end cooling performance, the Assassin X 120R SE V2 provides excellent value without compromising on essential cooling functions. However, for gamers and professionals who demand superior cooling for high-performance CPUs, the investment in the Peerless Assassin may be justified given its advanced design and capabilities.

Which should you buy?

Ultimately, the choice between the Thermalright Peerless Assassin 140 Black and the Thermalright Assassin X 120R SE V2 boils down to your specific needs and budget. If you require superior cooling performance, particularly for high-end systems, the Peerless Assassin is the clear winner with its advanced design and dual fans. However, for users seeking a cost-effective solution that still provides solid cooling capabilities, the Assassin X 120R SE V2 serves as an excellent choice. Assess your needs, and let your budget guide your decision.

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Thermalright Peerless Assassin 140 Black CPU Cooler vs Thermalright Assassin X 120R SE V2 CPU Air Cooler | versusfinder