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What GPU’s does Windows Server 2025 support for GPU Partitioning? [Solved]

Supported GPUs for GPU Partitioning in Windows Server 2025

Virtualization has transformed IT, enabling us to run multiple VM’s and OS’s on a single server. But for resource-intensive tasks like AI and machine learning, powerful graphics processing is essential. This is where Windows Server 2025’s GPU partitioning comes into play, allowing multiple virtual machines (VMs) to share a single GPU’s power, optimising usage and enhancing workload capacity.

What is GPU Partitioning?

With GPU partitioning, a single physical GPU can be split into multiple virtual GPUs (vGPUs), each assigned to different VMs. This enables simultaneous execution of resource-heavy tasks, like AI and ML workloads, all on a shared GPU—making it a game-changer for high-demand environments.

Supported GPUs

Currently only a handful of NVIDIA GPUs currently support partitioning with Windows Server 2025. Here’s a list of the compatible graphics cards supported for Windows Server 2025 for GPU Partitioning:

GPU ModelRough Cost (USD)CUDA CoresTF32 teraFLOPS or Tensor CoresMemory (GB)TDP (Watts)
NVIDIA A2£1300-1800128040-601640-60
NVIDIA A10£2300+8192275-41024150
NVIDIA A16£2700+5120 (4x 1280)4x 40 Cores64250
NVIDIA A40£5100+10,75274.8 – 149.648300
NVIDIA L2Not out yetn/a48.324TBD
NVIDIA L4£2500+n/a1202472
NVIDIA L40£7500+18176568 | Gen 4 Cores48300
NVIDIA L40S£9700+18,17636648350

Notes

  • My pick would be the NVIDIA A16 currently offering what is basically 4 GPU’s on one card already making it ideal for partitioning.
  • Details for some GPUs, especially newer models, are limited and may change as they become more widely available.
  • Most of these cards are made for the enterprise market, so don’t go thinking you will suddenly be able to set up 4 gaming PC’s on one server and get good graphic results! Whilst it may be possible, these are designed more around tensor cores, useful for AI and deep learning than Cuda cores, which are more multipurpose.

Windows Server 2025’s GPU partitioning unlocks powerful capabilities for optimising hardware and running demanding workloads. While limited to specific NVIDIA GPUs, it’s a step forward for those looking to enhance their system’s efficiency and boost VM computational power. Understanding which GPUs work best for what workloads will become the next big learning curve!

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Windows Server 2025: My Top New Favourite Features

Windows Server 2025: Enhanced Security, Performance, and Cloud Integration

It’s finally here! Microsoft has unveiled its latest server operating system, Windows Server 2025, and it should provide significant advancements in performance, security, and cloud integration. Below are some of the features that stuck out to me with my first install.

My Top 5 New Features of Windows Server 2025

  • Block Cloning: This feature significantly improves file copy performance, especially for large files, optimising file operations by copying only modified blocks, reducing I/O and improving performance for large files.
  • SMB over QUIC: This enables secure access to file shares over the internet, providing faster and more reliable file transfers using native SMB technologies.
  • Hotpatching: This allows for the application of security updates to running servers with minimal downtime, no more out of hours scheduling of reboots!
  • GPU Partitioning: This lets you split up GPU resources by allowing them to be divided into smaller, virtualized GPUs, adding GPU resources to a VM? Yes please!.
  • Enhanced Active Directory: This includes features like AD object repair, optional 32k database page size, and improved security for confidential attributes and default machine account passwords.

Key Features of Windows Server 2025:

  • Enhanced Security: Robust security measures, including hardened SMB protocols, improved Active Directory, and enhanced protection against cyber threats.
  • Accelerated Performance: Significant performance boosts for virtualization, storage, and networking, especially for AI and machine learning workloads.
  • Seamless Cloud Integration: Improved integration with Azure for hybrid and multi-cloud environments, enabling seamless workload migration and management.
  • Modernized Infrastructure: Support for the latest hardware and software technologies, including NVMe storage and GPU acceleration.

    Its just a bit better in every way from Server 2022 – and 100% better than 2012 R2!

Feature Windows Server 2025 Windows Server 2022 Windows Server 2012 R2
Security Enhanced security protocols, improved AD, stronger threat protection Robust security features, including shielded VMs and credential guard Basic security features with early Active Directory improvements and Security Essentials
Performance Accelerated virtualization, storage, and networking, optimized for AI/ML Strong performance, especially for virtualization and storage Improved performance for Hyper-V and storage, but limited optimization for newer technologies
Cloud Integration Deeper Azure integration, seamless workload migration Good Azure integration, basic hybrid cloud capabilities Limited cloud integration, early support for hybrid environments with System Center
Hardware Support Support for latest hardware, including NVMe and GPU Support for modern hardware, including NVMe Support for basic hardware configurations; limited support for emerging hardware like NVMe
 

In summary, Windows Server 2025 steps up the game with smarter security, better performance, and seamless cloud connectivity. From the efficient file handling with Block Cloning to downtime-reducing Hotpatching, it’s clear this release is built to make life easier for us admins. Adding GPU Partitioning for VM flexibility and enhanced AD features, Microsoft has pushed the envelope to give us a modern, future-proof server OS that seamlessly connects to Azure and Entra.

With all these updates, Windows Server 2025 is a significant improvement over its predecessor, Windows Server 2022, and a massive leap from the now-aged Server 2012 R2. Finally, if you are thinking about upgrading now EOL servers. This one’s worth it!