[
    {
        "role": "user",
        "content": "when%20runnning%20on%20windows%2011%20pro%20with%20high%20end%20gpu%20like%20nvidia%204090%2C%20is%20it%20possible%20to%20pass%20this%20gpu%20through%20to%20a%20linux%20vm%2C%20possibly%20running%20under%20hyper-v%20or%20vmware%20workstation%3F"
    },
    {
        "role": "assistant",
        "content": "Short answer: it\u2019s generally *not* possible to pass a high-end GPU like an NVIDIA RTX 4090 through directly to a Linux VM when your host is Windows 11 Pro, using Hyper-V or VMware Workstation \u2014 at least not officially or reliably. The capabilities are mostly reserved for server-class Windows SKUs, or enterprise hypervisors. Below is a breakdown of what is supported, what the limitations are, and what alternatives/open-workarounds exist.\n\n---\n\n## Hyper-V and Windows: Discrete Device Assignment (DDA) & GPU-P\n\n- Microsoft Hyper-V supports \"Discrete Device Assignment\" (DDA) which allows a physical PCIe device (including a graphics card) to be passed through to a VM. ([techcommunity.microsoft.com](https://techcommunity.microsoft.com/blog/virtualization/discrete-device-assignment----gpus/382266/?utm_source=openai))  \n- **However**, Windows 11 Pro (and desktop-class Windows in general) is *not* officially supported for DDA or GPU pass-through (\"GPU-P\") in many of these documents. These features are intended for *Windows Server* editions. The Microsoft troubleshooting guidance explicitly states that \u201cDDA and GPU-P aren\u2019t supported on desktop-class hardware or client operating systems such as Windows 10 or 11 Pro.\u201d ([learn.microsoft.com](https://learn.microsoft.com/en-us/troubleshoot/windows-server/virtualization/troubleshoot-hyper-v-gpu-assignment-partitioning-passthrough-issues?utm_source=openai))  \n- There are also strict hardware requirements:\n\n  * The CPU/motherboard must support IOMMU (Intel VT-d / AMD-Vi)  \n  * The motherboard BIOS/UEFI must expose ACS (Access Control Services) for proper isolation ([learn.microsoft.com](https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/plan/plan-for-deploying-devices-using-discrete-device-assignment?utm_source=openai))  \n  * The GPU must support being dismounted from the host and support whatever firmware/reset behavior required. Many consumer GPUs don\u2019t fully satisfy this.  \n\nGiven all this, **on Windows 11 Pro**, you likely won\u2019t be able to assign the RTX 4090 via DDA officially.\n\n---\n\n## VMware Workstation\n\n- VMware Workstation is a Type-2 (hosted) hypervisor. It *does not* support true PCIe passthrough of GPUs (i.e. dedicating the physical GPU to a guest VM) in any supported manner. What it *does* do is virtualized/host-accelerated GPU graphics (for UI, DX11, etc.) by mapping guest graphics APIs to the host GPU. ([community.broadcom.com](https://community.broadcom.com/vmware-cloud-foundation/discussion/vmware-workstation-17-pro-supports-use-of-host-gpu?utm_source=openai))  \n- Community documentation and VMware\u2019s own knowledge base confirm: with Workstation, the guest never gets full direct access to the GPU. Native features like CUDA compute, NVENC, full driver control, etc., won\u2019t be exposed. ([techyorker.com](https://techyorker.com/vmware-workstation-graphics-card-passthrough/?utm_source=openai))  \n\n---\n\n## NVIDIA Virtual GPU Software\n\n- NVIDIA\u2019s vGPU offerings (vGPU = virtual GPUs, letting multiple VMs share or use a GPU via virtualization) are available, but primarily in enterprise and data center contexts like VMware vSphere ESXi or Microsoft Windows Server with Hyper-V. ([docs.nvidia.com](https://docs.nvidia.com/grid/latest/grid-vgpu-user-guide/index.html?utm_source=openai))  \n- The list of currently supported NVIDIA GPUs for GPU-P includes server/accelerator models (e.g. A2, A10, A16, A40, L2, L4, L40/S etc.). The RTX 4090 is *not* listed, meaning that even in server SKUs, support for GPU-P or full passthrough for a consumer RTX 4090 may not be officially supported. ([learn.microsoft.com](https://learn.microsoft.com/en-us/troubleshoot/windows-server/virtualization/troubleshoot-hyper-v-gpu-assignment-partitioning-passthrough-issues?utm_source=openai))  \n\n---\n\n## So, what\u2019s possible with an RTX 4090 on Windows 11 Pro?\n\nHere\u2019s what you *can* do and what you *can't* do:\n\n| Scenario | Possible? | Details / Partial Limitations |\n|---|---|---|\n| Run Linux VM under Hyper-V on Win 11 Pro + assign RTX 4090 via DDA or GPU-P | No (officially unsupported) | DDA/GPU-P not supported on client Windows SKUs; feature may simply fail or be blocked. Some users try workarounds, but reliability and driver support are sketchy. |\n| Run Linux VM under VMware Workstation with full RTX 4090 access | No | VMware Workstation uses a virtual GPU; guest cannot fully own the RTX 4090, nor use Nvidia CUDA or hardware encoders directly. |\n| Use UI / 3D acceleration in VMware Workstation or Hyper-V VM | Yes | For graphical & UI tasks, small scale 3D work, but with performance overhead, limited to supported APIs (like DX11, certain OpenGL levels). No guarantee of parity with native performance. |\n| Use alternative hypervisor (e.g. KVM/QEMU on Linux host, or VMware ESXi) | Yes | If you were to run Linux as the host, or use a server hypervisor, GPU passthrough is heavily supported. If you can dual-boot or move to a server edition OS, your options improve. |\n\n---\n\n## Workarounds & Experimental Options\n\nSome users attempt workarounds, though with caveats:\n\n- Using **multiple GPUs**: one dedicated to the host, another to pass through to the VM. Helps with having a display on the host while the other GPU is detached for VM use. But again, requires hardware that supports DDA, and an OS that allows it.  \n- Some community scripts attempt to unlock DDA/GPU-P on Windows 11 Pro, but these are not official, often fragile, and may break with updates or drivers.  \n- Using external hypervisors (USB or network-based GPUs, streaming, or remote PC technologies) as a way to get accelerated performance inside VMs without full passthrough.\n\n---\n\n## Conclusion\n\nTo sum up:\n\n- If you stay on **Windows 11 Pro** (a client OS), then neither Hyper-V nor VMware Workstation officially supports full GPU passthrough of a card like the RTX 4090.  \n- For GPU passthrough (or something close enough), you\u2019ll likely need:\n  - A server edition OS (Windows Server), or\n  - A Type-1 hypervisor (ESXi, Proxmox, KVM, etc.), or\n  - Linux as host OS.\n\nIf you want, I can walk you through the steps and feasibility of setting up passthrough with a different setup (for example using Linux as host, or moving to Windows Server), or help you evaluate whether your specific hardware would work. Would you like that?"
    }
]