VIRTUAL GPU TECHNOLOGY
NVIDIA GRID™ vGPU™ is the industry’s most advanced technology for sharing true GPU hardware acceleration between multiple virtual desktops—without compromising the graphics experience. Application features and compatibility are exactly the same as they would be at the desk.
With GRID vGPU technology, the graphics commands of each virtual machine are passed directly to the GPU, without translation by the hypervisor. This allows the GPU hardware to be time-sliced to deliver the ultimate in shared virtualised graphics performance.
DEDICATED GPU TECHNOLOGY
NVIDIA GPU PASS-THROUGH TECHNOLOGY
NVIDIA GPU pass-through technology lets you create a virtual workstation that gives a user all the benefits of a dedicated processor at their desk. By directly connecting a dedicated GPU to the hypervisor, you can now allocate the full GPU and graphics memory capability to a single virtual machine.
Source: http://www.nvidia.in/object/grid-vdi-desktop-virtualisation-in.html