blog About Ultra-Soft Thermal Pads for HBM, VRM and High-Density AI Servers

The rapid development of artificial intelligence (AI), machine learning, and high-performance computing has significantly increased the power density of modern servers. Advanced AI servers equipped with HBM (High Bandwidth Memory), GPUs, VRMs, and AI accelerators generate tremendous heat within extremely compact spaces.

Traditional thermal interface materials may struggle to meet the requirements of these applications due to limited compressibility, insufficient surface contact, and increased mechanical stress on sensitive components. To address these challenges, ultra-soft thermal pads have become an ideal thermal management solution for high-density computing systems.

ZIITEK’s ultra-soft thermal pads provide excellent thermal performance while maintaining low compression force, enabling efficient heat transfer and reliable operation for advanced AI hardware.

AI server structures often contain uneven surfaces, microscopic gaps, and different component heights between heat sources and cooling systems.

Ultra-soft thermal pads feature high flexibility and compressibility, allowing them to closely conform to irregular surfaces and maximize contact area. This helps minimize thermal resistance and improves heat dissipation efficiency.

For applications such as HBM stacks, VRM modules, GPU power components, and server cooling assemblies, soft thermal pads provide better interface contact compared with conventional rigid materials.

Modern AI processors and memory packages are becoming increasingly sophisticated and fragile. Excessive mechanical pressure during assembly may cause component deformation or reliability issues.

Ultra-soft thermal pads are designed with low compression stress, reducing mechanical load on delicate electronic components while maintaining stable thermal performance.

This makes them particularly suitable for:

• High-performance GPUs
• HBM memory modules
• VRM power circuits
• AI accelerator cards
• Data center server systems

As AI workloads continue to grow, chip power consumption and heat generation are increasing rapidly. Efficient thermal management has become a critical factor affecting system performance and reliability.

ZIITEK thermal pads are available with various thermal conductivity options to meet different cooling requirements. Combined with excellent softness and conformability, these materials help transfer heat effectively from electronic components to heat sinks, cold plates, or liquid cooling systems.

High Bandwidth Memory (HBM) plays a critical role in AI computing platforms by providing extremely high data transfer rates. However, HBM packages generate significant heat in a limited area.

Ultra-soft thermal pads help provide:

• Improved contact between HBM modules and cooling structures
• Reduced thermal resistance
• Stable performance under continuous AI workloads

Voltage Regulator Modules (VRMs) are essential for supplying stable power to high-performance processors. During intensive computing operations, VRMs can generate substantial heat.

A soft and reliable thermal pad solution helps efficiently transfer VRM heat to heat spreaders, chassis structures, or cooling plates, improving overall server reliability.

With extensive experience in thermal interface materials (TIMs), ZIITEK provides customized thermal solutions for advanced electronic applications, including:

• AI servers and data centers
• GPU computing platforms
• High-performance workstations
• Automotive electronics
• Industrial control systems

ZIITEK ultra-soft thermal pads can be customized in thickness, size, hardness, and thermal conductivity to meet different application requirements.

Key advantages include:

As AI servers continue to evolve toward higher computing density and greater power consumption, advanced thermal management solutions are becoming increasingly important.

Ultra-soft thermal pads provide an effective balance between thermal conductivity, flexibility, and mechanical protection, making them an ideal choice for HBM, VRM, GPU, and high-density AI server applications.

ZIITEK is committed to developing high-performance thermal interface materials that help customers achieve reliable cooling performance and support the next generation of AI computing technologies.