VMware Horizon 6.1 now supports NVIDIA GRID vGPU for their virtual desktop users, but before jumping on the rich graphic bandwagon there are some considerations to be made, for instance NVIDIA GRID VGPU doesnt support vMotion or HA because of the direct-path access to the hardware.

in addition to that there is no support for vGPU in a Linux guest as NVidia drivers are not availble

https://gridforums.nvidia.com/default/topic/285/nvidia-grid-drivers/grid-driver-for-ubuntu-and-centos-/

A handy comparison of vSGA, NVDIA GRID vGPU and vDGA is shown below

Before using the hardware-based (GPU) virtual Shared Graphics Acceleration (vSGA) feature in vSphere, you must install and configure the NVIDIA GPU VIB (vSphere Installation Bundle) on ESXi.

More information can be found here

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2033434

I’m sure there will be some use cases for GRID, but I’d imagine the lack of vMotion & HA support will be a deal breaker for most.