VMware

The Virtual Shared Graphics Acceleration (vSGA) Program provides VMware partners with a comprehensive set of tools and resources for developing, certifying, and releasing vSGA ready GPU device drivers for the VMware ESXi Host. Drivers certified under the vSGA program will be considered "VMware Ready" and supported for use on vSGA ready platforms.

As a pre-requisite for vSGA certification, the GPU device's supported server must be listed on VMware Compatibility Guide:

http://www.vmware.com/resources/compatibility/search.php?deviceCategory=server

For vSGA compatibility, please refer to the partner support page to ensure your server is compatible with your vSGA certified graphics card.

Please also ensure you have the appriopriate support agreement for your product.
GPU PartnerNVIDIA Corp.
GPU Device Model GRID K1
GPU Device Driver Version 304.76
Supported Servers http://www.nvidia.com/object/enterprise-virtualization-where-to-buy.html
Minimum Supported VMware ESXi Release Version 5.1
Minimum Supported VMware Horizon View Release Version 5.2
Driver Download Location http://www.nvidia.com/Download/index.aspx?lang=en_us
GPU PartnerNVIDIA Corp.
GPU Device Model GRID K2
GPU Device Driver Version 304.76
Supported Servers http://www.nvidia.com/object/enterprise-virtualization-where-to-buy.html
Minimum Supported VMware ESXi Release Version 5.1
Minimum Supported VMware Horizon View Release Version 5.2
Driver Download Location http://www.nvidia.com/Download/index.aspx?lang=en_us

VMware Compatibility Guide