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Thermalright Assassin X 90 SE V2 CPU Cooler vs Thermalright Peerless Assassin 120 SE Black CPU Cooler

Updated August 2026The Thermalright Peerless Assassin 120 SE Black offers superior cooling performance and compatibility, making it the better choice for enthusiasts, while the Assassin X 90 SE V2 is a budget-friendly option.

The Thermalright Peerless Assassin 120 SE Black offers superior cooling performance and compatibility, making it the better choice for enthusiasts, while the Assassin X 90 SE V2 is a budget-friendly option.

Why Thermalright Assassin X 90 SE V2 CPU Cooler is better

lower price

C$24.90 vs C$46.79

smaller size

height of 118mm vs 155mm

quieter operation

max noise level of 23.85 dB(A) vs 25.6 dB(A)

Why Thermalright Peerless Assassin 120 SE Black CPU Cooler is better

better cooling

66.17 CFM airflow vs 32.77 CFM

dual fans

two fans vs one fan

more compatibility

supports LGA 1700 and 1851

Overall score

Thermalright Assassin X 90 SE V2 CPU Cooler
70
Thermalright Peerless Assassin 120 SE Black CPU Cooler
85

Specifications

SpecThermalright Assassin X 90 SE V2 CPU CoolerThermalright Peerless Assassin 120 SE Black CPU Cooler
PriceC$24.90C$46.79
Fan Count12
Max RPM22001550
Socket SupportIntel 1150/1151/1155/1156/1200, AMD AM4/AM5Intel 1150/1151/1155/1156/1200/1700/1851, AMD AM4/AM5
Cooling TypeSingle TowerDual Tower

Dimension comparison

Thermalright Assassin X 90 SE V2 CPU CoolerThermalright Peerless Assassin 120 SE Black CPU Cooler

Price Comparison

The Thermalright Assassin X 90 SE V2 CPU Cooler is priced at C$24.90, while the Thermalright Peerless Assassin 120 SE Black CPU Cooler is significantly more expensive at C$46.79. This price difference of C$21.89 may be a crucial factor for budget-conscious consumers. The Assassin X 90 SE V2 offers a cost-effective solution for those looking to enhance their CPU cooling without breaking the bank, whereas the Peerless Assassin 120 SE Black, with its higher price, aims to deliver advanced cooling features that may justify the investment for performance enthusiasts.

Cooling Performance

Cooling performance is a vital consideration when choosing between the two coolers. The Assassin X 90 SE V2 features a single fan with a maximum airflow of 32.77 CFM at 2200 RPM, producing a noise level of up to 23.85 dB(A). In contrast, the Peerless Assassin 120 SE Black boasts dual fans, which can generate an impressive airflow of 66.17 CFM at 1550 RPM, with a maximum noise level of 25.6 dB(A). The dual-fan configuration of the Peerless model not only enhances its cooling capabilities but also helps manage temperatures more effectively during heavy workloads, making it a more suitable option for users seeking superior thermal performance.

Design and Build Quality

In terms of design and build quality, both coolers showcase Thermalright's commitment to durability. The Assassin X 90 SE V2 features a compact design, with dimensions of 94mm x 77mm x 118mm, making it compatible with a variety of chassis. It utilizes an aluminum heat sink and has a height of 118mm. Conversely, the Peerless Assassin 120 SE Black stands taller at 155mm and is larger overall, measuring 125mm x 135mm x 155mm. Its dual-tower configuration and all-aluminium fins not only provide a striking aesthetic but also increase the effective heat dissipation area. If physical space and compatibility are concerns, the Assassin X 90 SE V2 might be the better choice, while the Peerless Assassin 120 SE Black offers enhanced cooling potential.

Fan Technology

Fan technology is another area where the two coolers differ. The Assassin X 90 SE V2 employs a single TL-P9 PWM fan, designed to operate efficiently at a maximum speed of 2200 RPM, providing a balance of cooling and noise reduction. On the other hand, the Peerless Assassin 120 SE Black features two TL-C12C PWM fans, which operate at a lower maximum speed of 1550 RPM but compensate with increased airflow capability. The dual fans not only improve cooling performance but also allow for quieter operation under less demanding conditions. For users prioritizing a quieter setup without sacrificing cooling, the Peerless Assassin 120 SE Black may be the preferable option.

Compatibility

Compatibility is crucial when selecting a CPU cooler, and both models cater to a wide range of Intel and AMD CPU sockets. The Assassin X 90 SE V2 supports Intel sockets 1150, 1151, 1155, 1156, and 1200, as well as AMD's AM4 and AM5. The Peerless Assassin 120 SE Black expands on this with support for additional Intel sockets, including LGA 1700 and 1851, alongside the same AMD sockets. This added compatibility with newer CPU generations makes the Peerless model a more future-proof choice, especially for users looking to upgrade their systems in the near future.

Noise Levels

When it comes to noise levels, both coolers are designed with user comfort in mind. The Assassin X 90 SE V2 operates at a maximum noise level of 23.85 dB(A), which is relatively quiet and suitable for most standard PC builds. The Peerless Assassin 120 SE Black, while slightly louder at 25.6 dB(A), benefits from its dual-fan setup, allowing it to maintain efficient cooling without significantly increasing noise. Users sensitive to noise may prefer the quieter operation of the Assassin X 90 SE V2, whereas those who value performance may be willing to tolerate a bit more noise from the Peerless Assassin 120 SE Black.

Installation Process

Both coolers come with installation kits compatible with various CPU sockets, making the installation process straightforward. The Assassin X 90 SE V2 includes mounting hardware for Intel and AMD platforms, ensuring ease of installation. Similarly, the Peerless Assassin 120 SE Black provides appropriate mounting plates and fasteners, designed for both Intel and AMD systems. However, the larger size of the Peerless model may necessitate more careful handling during installation. Overall, both coolers are user-friendly, but potential buyers should consider their own experience level and the complexity of their builds when making a choice.

Which should you buy?

The decision between the Thermalright Assassin X 90 SE V2 and the Thermalright Peerless Assassin 120 SE Black ultimately depends on individual needs and preferences. If budget and space are primary concerns, the Assassin X 90 SE V2 offers excellent performance at a lower price point. However, for those seeking superior cooling performance, especially under heavy loads, the Peerless Assassin 120 SE Black stands out with its dual-fan design and enhanced airflow capabilities. Additionally, the Peerless model's greater compatibility with a wider range of sockets may appeal to users looking for a long-term investment. Ultimately, evaluate your specific requirements, including budget, cooling needs, and system compatibility, to make the best choice for your setup.

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