Asus P5VDC-X - Manual (Page 70)

2-24 Chapter 2: BIOS setup
AGP 2.0 Mode [4x]
AGP Fast Write [Enabled]
AGP Aperture Size [128MB]
Primary Graphics Adapter [PCI Express]
AGP & P2P Bridge Configuration
If you select the option of AGP & P2P Bridge Configuration, the following
options will appearred.
AGP 2.0 Mode [4x]
Allows you to select the AGP mode.
Configuration options: [4x][2x] [1x]
AGP Fast Write [Enabled]
Allows you to enable or disable the AGP fast write.
Configuration options: [Disabled] [Enabled]
AGP Aperture Size [128MB]
Allows you to select the AGP aperture size.
Configuration options: [32 MHz] [64 MHz] [128 MHz] [256 MHz]
Primary Graphics Adapter [PCI Express]
Allows you to set the primary graphics adapter.
Configuration options: [PCI] [AGP] [PCI Express]