AGP bus is the fastest variant of PCI which is optimized for the connection of video adapters. There is no AGP bus in modern motherboards and a video adapter is connected to PCI Express bus. To set this bus you can find some parameters in much outdated motherboards.
AGP Capability (AGP Mode, AGP Transfer Mode)
This parameter sets the speed of data transmission via AGP bus.
- Auto – the speed is selected automatically depending on the capacity of your motherboard and video adapter;
- 1X, 2X, 4X, 8X – a port operation mode is set manually. Manual selection of speed may be required if there are errors in operation of video adapter.
You can also find the parameters “AGP 4X Mode” or “AGP 2X Mode” enabling prohibiting or permitting the usage of 2X or 4X modes.
AGP Aperture Size (MB)
This parameter sets a maximum size of operating memory which is allowed to use for video adapter for storing its textures.
Possible values – 8, 16, 32, 64, 128, 256. It is recommended to select the value which is approximately equal to half amount of memory. This does not decrease the amount of available memory as the video adapter requests it only in case of necessity.