Lspci
From DikapediaV2
lspci - list all PCI devices
lspci is a utility for displaying information about PCI buses in the system and devices connected to them.
It's a good way to determine the make and model of the graphics card in a system without physically inspecting the hardware is the lspci command.
$ /sbin/lspci ... 00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated Graphics Controller (rev 02) ...
This command will usually tell you the vendor and model of your card. If the vendor is not listed, the PCI vendor ID can be used to find this information using a public device id database, such as www.pcidatabase.com
Reference: https://access.redhat.com/articles/9374