GPU Datasheets and HW Implementation support

Hi,

I am looking for support on my Motherboard design with Discrete GPU chip on the Motherboard. Information on PCIe add-on card with GPUs are plenty - however when I want to use the GPU chip directly on the motherboard - there is no information available in public forums.
Seeking inputs on how to get the Datasheets and HW Implementation support for nVidia GPU chips.
Thanks in advance.
Best regards,
Sriram SR
sriramsr@hcl.com