"This is where the Primary VGA BIOS feature comes in. It allows you to select whether to boot the system using the AGP graphics card or the PCI graphics card.
If you are only using a single graphics card, then the BIOS will detect it as such and boot it up, irrespective of what you set the feature to. However, there may be a slight reduction in the time taken to detect and initialize the card if you select the proper setting for this BIOS feature. For example..."