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AMD Radeon Instinct Mi25 16GB HBM2 fanless graphics accelerator

AMD

AMD Radeon Instinct Mi25 16GB HBM2 graphics card

SKU CH-X23E-1389R MPN Mi25

A fanless 16 GB HBM2 accelerator for Linux ROCm workloads, supporting up to four cards on a server board or Gigabyte Z390 UD

  • Memory Size16GB
  • Memory TypeHBM2
  • CoolerFanless
  • 16 GB HBM2 memory feeds compute workloads with high bandwidth
  • Fanless design suits dense server racks and quiet operation
  • Linux-only ROCm stack targets HPC and AI frameworks
  • Validated up to four MI25 cards on server motherboards
  • Mixed GPU support shown with four RTX 3060 cards alongside

Linux compute accelerator

The AMD Radeon Instinct Mi25 is a 16GB HBM2 graphics accelerator built for Linux compute workloads. It operates exclusively with the ROCm stack and does not function under Windows or with standard Radeon drivers. Target users are developers and researchers running HPC or machine-learning tasks on supported distributions.

Server motherboard dependency

The fanless card requires a server-class motherboard for multi-GPU configurations; testing confirms up to four Mi25 units operate together on such platforms. A Gigabyte Z390 UD board has also shown compatibility with four cards. Additional non-Mi25 GPUs such as RTX 3060 models can be added alongside the four Instinct units.

Sustained thermal profile

Without onboard fans the Mi25 relies entirely on chassis airflow to dissipate heat during extended compute runs. Stable operation under continuous load therefore depends on case ventilation and the thermal capacity of the host system rather than a dedicated cooler. Adequate directed airflow is essential to maintain performance over long periods.

Highlights

  • 16 GB HBM2 memory feeds compute workloads with high bandwidth
  • Fanless design suits dense server racks and quiet operation
  • Linux-only ROCm stack targets HPC and AI frameworks
  • Validated up to four MI25 cards on server motherboards
  • Mixed GPU support shown with four RTX 3060 cards alongside

Specifications

Memory Size16GB
Memory TypeHBM2
CoolerFanless

Questions about this item

Does this card run on Windows?

The card is supported only on Linux and requires the ROCm software stack; it will not function with Windows or standard Radeon drivers.

How many MI25 cards can I install in one system?

Up to four MI25 cards have been tested together on a server motherboard, and additional non-MI25 GPUs such as RTX 3060 models can be added alongside them.

What motherboard is needed for multi-card operation?

A server motherboard is typically required for four-card configurations, though the Gigabyte Z390 UD has also been validated for four MI25 units.

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