Can someone explain this GPU Vendor ID string?

Solution 1:

According to nVidia PCI Vendor and Devices for Geforce desktop webpage, PCI\VEN_10DE&DEV_13C2 is the Device ID of the NVIDIA GeForce GTX 970 graphics card.

_{How to show other information about your GPU}

GPU-Z is a lightweight system utility designed to provide vital information about your video card and graphics processor. GPU-Z displays information about your adapter, GPU, and display including overclock, default clocks, 3D clocks, and more. It supports NVIDIA, ATI and Intel graphics devices.

You can run GPU-Z as a portable app from a USB flash drive without installing it on your computer's hard drive by downloading the GPU-Z portable app for Windows.