You don’t need to attach a dedicated GPU for each VM when using Hyper-V RemoteFX because virtual machines can dynamically share the GPU for the workload. Using RemoteFX decreases CPU (central processing unit) load and increases scalability in a virtual environment.
This feature is not present in Hyper-V Manager in the latest version of Windows Server 2019 – you cannot enable Hyper-V RemoteFX in the graphical user interface (GUI). RemoteFX was introduced in Windows 7 and has been available in Windows 8, Windows 10, Windows Server 2008 R2 SP1, Windows Server 2012, and Windows Server 2016. A RemoteFX GPU is a virtual device attached to a virtual machine that shares the resources of a physical video card installed on a Hyper-V host (shares the GPU and video memory). Hyper-V RemoteFX can be used to deploy a VDI (virtual desktop infrastructure). This is the optimal scenario for high-burst workloads when the dedicated resources of a video card are not required at all times.
The resources of a video card are shared among multiple VMs. RemoteFX is a feature that allows Hyper-V virtual machines to share a physical GPU (graphics processing unit). This blog post covers Hyper-V RemoteFX and explains how to configure RemoteFX on Windows machines. Hyper-V RemoteFX is a feature that helps you with this task. However, you can configure a virtual machine to use a video card and 3D acceleration. Virtual machines use only basic video functionality to display data by default. While installing a video card on a physical computer is not a problem, it’s not as straightforward on a virtual machine. Sometimes you may need to run applications that require hardware video acceleration and a graphics card. If one VM is idle, another VM running heavy applications can consume more CPU and memory resources. Hardware virtualization allows you to share hardware resources between virtual machines to achieve flexible and rational usage of resources.
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