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Thermalright TL-C12C-S CPU Fan vs Thermal Grizzly - PhaseSheet PTM

Updated August 2026The Thermalright TL-C12C-S CPU Fan offers superior active cooling performance, while the Thermal Grizzly PhaseSheet PTM excels in passive heat transfer. Choose based on your cooling needs.

The Thermalright TL-C12C-S CPU Fan offers superior active cooling performance, while the Thermal Grizzly PhaseSheet PTM excels in passive heat transfer. Choose based on your cooling needs.

Why Thermalright TL-C12C-S CPU Fan is better

Cooling Efficiency

Higher airflow of 66.17CFM compared to passive cooling of PhaseSheet PTM

Noise Levels

Operates quietly at 25.6dBA, enhancing user experience

Aesthetics

Features customizable LED lighting with 17 modes

Why Thermal Grizzly - PhaseSheet PTM is better

Price

More affordable at £11.40 compared to £15.90

Ease of Use

Simpler application process without mess

Durability

Stable thermal conductivity after 10 thermal cycles

Overall score

Thermalright TL-C12C-S CPU Fan
85
Thermal Grizzly - PhaseSheet PTM
70

Specifications

SpecThermalright TL-C12C-S CPU FanThermal Grizzly - PhaseSheet PTM
BrandThermalrightThermal Grizzly
TypeFanThermal Pad
Max Speed1500RPMN/A
Thermal ConductivityN/AHigh
LED LightingYesNo

Dimension comparison

Thermalright TL-C12C-S CPU FanThermal Grizzly - PhaseSheet PTM

Overview of the Products

In this comparison, we examine the Thermalright TL-C12C-S CPU Fan and the Thermal Grizzly PhaseSheet PTM. The TL-C12C-S is priced at £15.90, while the PhaseSheet PTM is more affordable at £11.40. Both products are designed to enhance cooling performance in PCs, but they serve different roles within the cooling system.

The Thermalright TL-C12C-S is a high-performance cooling fan equipped with a 4PIN PWM fan cable interface that adjusts its speed according to motherboard temperature, achieving a maximum of 1500RPM. On the other hand, the Thermal Grizzly PhaseSheet PTM is a thermal pad that utilises phase change material for optimal heat transfer, liquefying only at temperatures above 45°C for easy application.

Cooling Efficiency

When it comes to cooling efficiency, the Thermalright TL-C12C-S boasts an air flow of 66.17CFM and a noise level of just 25.6dBA, making it an excellent choice for maintaining a cool environment in your PC. Its design allows for effective air pressure of 1.53mm H2O, ensuring that heat is effectively dissipated.

Conversely, the Thermal Grizzly PhaseSheet PTM excels in thermal conductivity, specifically designed for efficient cooling of CPUs and GPUs. While it doesn't have a measurable airflow like a fan, its solid state at room temperature and ability to liquefy at 45°C ensures that it can adapt to varying thermal conditions, thereby contributing to overall cooling performance.

Installation and Ease of Use

The Thermalright TL-C12C-S is designed for easy installation, featuring a 4-pin PWM connector that allows for straightforward integration into existing cooling systems. Its cable length of up to 55cm adds flexibility in positioning within the PC case.

In contrast, the Thermal Grizzly PhaseSheet PTM is user-friendly as well, allowing for a straightforward application process. As it solidifies at room temperature and only liquefies at higher temperatures, users can apply it without the complexities associated with many thermal pastes. This characteristic reduces the risk of mess during installation, making it accessible for both novice and experienced builders.

Noise Levels

Noise levels are a critical factor in cooling solutions. The Thermalright TL-C12C-S, with its maximum noise output of 25.6dBA, operates quietly, making it suitable for those who value a silent computing experience. Its S-FDB bearings contribute significantly to minimising noise while maximising cooling performance.

On the other hand, the Thermal Grizzly PhaseSheet PTM is silent by nature, as it does not produce any noise during operation. While it does not actively cool like a fan, its application can enhance overall system quietness, particularly in setups where fans may be running at higher speeds.

Durability and Longevity

The Thermalright TL-C12C-S is built with quality S-FDB bearings designed to extend the fan's lifespan while maintaining performance. This durability is essential for ensuring long-term reliability in a cooling solution, particularly in demanding environments.

The Thermal Grizzly PhaseSheet PTM offers long-lasting performance, maintaining stable thermal conductivity after approximately 10 thermal cycles. This characteristic ensures that it remains effective over time, making it a dependable choice for consistent cooling.

Aesthetics and Design

Aesthetics play a significant role in many PC builds, and the Thermalright TL-C12C-S shines in this regard. It features high-brightness LED lighting with up to 17 different modes, allowing users to customise their lighting effects to match their build’s theme. This aspect can add an appealing visual element to any setup.

The Thermal Grizzly PhaseSheet PTM, however, focuses more on functionality than aesthetics. As a thermal pad, it does not contribute to the visual appeal of a build but provides essential performance benefits that are crucial for effective cooling.

Versatility

The Thermalright TL-C12C-S is versatile enough to be used as both a case fan and a CPU cooler, helping to dissipate heat effectively from both the case and the CPU during operation. Its design allows for maximum cooling in various configurations, making it a flexible solution for different setups.

In comparison, the Thermal Grizzly PhaseSheet PTM is also versatile; it can be used in various cooling systems, accommodating CPUs, GPUs, and other electronic components. This adaptability enhances its appeal for users looking to optimise their entire system's thermal management.

Which should you buy?

Choosing between the Thermalright TL-C12C-S CPU Fan and the Thermal Grizzly PhaseSheet PTM ultimately depends on your specific needs. If you require active cooling with adjustable speeds and a visually appealing design, the TL-C12C-S is the superior option at £15.90. Its high airflow and quiet operation make it an excellent choice for performance-oriented builds.

However, if you are looking for a cost-effective solution that focuses on passive cooling efficiency and ease of application, the Thermal Grizzly PhaseSheet PTM at £11.40 is a solid choice. Its excellent thermal conductivity and compatibility with various components make it a reliable option for enhancing your system's cooling capabilities. Ultimately, your decision should align with whether you need a fan for active cooling or a thermal pad for efficient heat transfer.

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Thermalright TL-C12C-S CPU Fan vs Thermal Grizzly - PhaseSheet PTM | versusfinder