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Thermal Grizzly - PhaseSheet PTM vs TR-Assassin X 120R SE V2 CPU Air Cooler

Updated August 2026The Thermal Grizzly - PhaseSheet PTM excels in thermal conductivity and ease of application, while the TR-Assassin X 120R SE V2 offers robust active cooling. Choose based on your specific needs.

The Thermal Grizzly - PhaseSheet PTM excels in thermal conductivity and ease of application, while the TR-Assassin X 120R SE V2 offers robust active cooling. Choose based on your specific needs.

Why Thermal Grizzly - PhaseSheet PTM is better

cost

PhaseSheet PTM is cheaper at £11.40

versatility

suitable for CPUs, GPUs, and other components

silent operation

does not produce noise when applied

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

active cooling

TR-Assassin X provides airflow for CPU cooling

installation

designed for specific CPU sockets with secure contact

performance

higher airflow and lower noise level at 25.6 dB(A)

Overall score

Thermal Grizzly - PhaseSheet PTM
85
TR-Assassin X 120R SE V2 CPU Air Cooler
92

Specifications

SpecThermal Grizzly - PhaseSheet PTMTR-Assassin X 120R SE V2 CPU Air Cooler
MaterialPhase ChangeAluminum & Copper
CompatibilityUniversalIntel & AMD
Thermal ConductivityExcellentGood
Installation EaseEasyModerate
Cooling TypePassiveActive

Dimension comparison

Thermal Grizzly - PhaseSheet PTMTR-Assassin X 120R SE V2 CPU Air Cooler

Overview of Thermal Grizzly - PhaseSheet PTM

The Thermal Grizzly - PhaseSheet PTM is a high-performance thermal pad designed for optimal heat transfer, retailing at £11.40. This product is crafted from phase change material, which means it remains solid at room temperature and only liquefies at temperatures above 45°C. This unique property allows for easy application and excellent thermal conductivity, making it suitable for CPUs, GPUs, and other electronic components. The PhaseSheet PTM's formulation ensures it has a very low viscosity when in a liquid state, allowing for minimal thickness, which is crucial for efficient heat dissipation.

Overview of TR-Assassin X 120R SE V2 CPU Air Cooler

The TR-Assassin X 120R SE V2 CPU Air Cooler is a robust cooling solution priced at £14.49. This air cooler features a heatsink made from a combination of aluminium and copper, ensuring effective heat management for various CPU models. With a height of just 148mm, it fits comfortably in most ATX cases and has fins designed not to obstruct RAM modules. The cooler is equipped with a high-performance 120mm fan that operates at a maximum speed of 1550 RPM, generating an airflow of 66.17 CFM while maintaining a noise level of no more than 25.6 dB(A).

Performance Comparison

When it comes to performance, the Thermal Grizzly - PhaseSheet PTM offers excellent thermal conductivity, which is essential for efficient cooling. Its ability to maintain stable thermal conductivity after approximately ten thermal cycles is a significant advantage for prolonged use. On the other hand, the TR-Assassin X 120R SE V2 shines with its dual functionality as both a heatsink and a fan, providing a cooling solution that can actively manage CPU temperatures through airflow. While the PhaseSheet PTM excels in thermal transfer, the air cooler's dynamic fan performance can lead to more immediate cooling effects during intensive CPU tasks.

Installation Process

The installation process differs significantly between the two products. The Thermal Grizzly - PhaseSheet PTM is straightforward to use, as it requires just placement on the desired component. Its liquefaction at 45°C allows for easy application without elaborate setup. Conversely, the TR-Assassin X 120R SE V2 requires a more involved installation due to its heatsink and fan components. It features a specific installation system and metal pressure plate for secure contact with the CPU, which may be more complex for those less experienced with PC building. The additional requirement of using the original motherboard's backplate for AM4 and AM5 CPUs can also complicate matters.

Compatibility and Versatility

In terms of compatibility, the Thermal Grizzly - PhaseSheet PTM is highly versatile, suitable for CPUs, GPUs, and various electronic components, making it a great choice for a wide range of setups. Its non-electrically conductive properties ensure safety when applied to sensitive electronics. The TR-Assassin X 120R SE V2, however, is specifically designed for Intel and AMD CPUs, supporting a wide range of socket types, including LGA1150 through LGA1700 for Intel and AM4/AM5 for AMD. While it is more tailored, the specific compatibility requirements might limit its use in some builds compared to the universal application of the PhaseSheet PTM.

Noise Levels

When considering noise levels, the TR-Assassin X 120R SE V2 operates at a maximum noise level of 25.6 dB(A), which is relatively quiet for a CPU air cooler, especially given its airflow capabilities. This makes it suitable for users who prefer a quieter computing environment. The Thermal Grizzly - PhaseSheet PTM, being a thermal pad, does not produce noise, as it operates silently when applied to the relevant components. Therefore, if noise is a significant concern, the PhaseSheet PTM would be advantageous, but if active cooling is needed, the TR-Assassin X 120R SE V2 remains a commendable option.

Cost-Effectiveness

Cost-wise, the Thermal Grizzly - PhaseSheet PTM is priced at £11.40, making it a budget-friendly option for those looking to improve their system's thermal performance without breaking the bank. In contrast, the TR-Assassin X 120R SE V2 costs £14.49, which reflects its more complex design and additional features such as the integrated fan and heatsink. While the price difference is modest, it may influence the choice for those on a tighter budget who still seek effective cooling solutions. Both products offer good value, but the PhaseSheet PTM provides a more economical option for users focused solely on thermal transfer.

Which should you buy?

Deciding between the Thermal Grizzly - PhaseSheet PTM and the TR-Assassin X 120R SE V2 ultimately hinges on your specific cooling needs and system requirements. If you are looking for a cost-effective, versatile thermal solution for various components, the PhaseSheet PTM is an excellent choice, particularly for those who prioritise thermal conductivity and ease of application. However, if you need a comprehensive cooling solution with active airflow capable of managing CPU temperatures effectively, the TR-Assassin X 120R SE V2 is likely the better option, offering robust performance and compatibility across a range of CPU sockets.

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Thermal Grizzly - PhaseSheet PTM vs TR-Assassin X 120R SE V2 CPU Air Cooler | versusfinder