AGP Mode (AGP)
AGP mode determines the frequency of the AGP, the value is a multiple of 66MHz, 1x slowest, 8x the fastest. The video card that is currently capable of truly supporting AGP 8x is only the xabre of SIS. Some motherboards feature automatic detection, which determines the most appropriate rate based on the graphics card in the AGP slot. There may be an "AGP 4xMode" enable/disable setting option in the advanced properties of some graphics cards, and the Enable will be set to 4x,disable will be set to 2x. The old Intel BX and via Apollo motherboards do not have a 4x option because the chipset does not support AGP 4x, so choose the highest value for these motherboards.
AGP Fast writes (AGP quick Write)
Determines whether the video memory is allowed to be written directly without passing through the system memory. This setting is set to "enable" to reduce the time that image data is transferred to the video card to be processed because it skips over the system memory controller. Setting this option to "enable" can improve performance, but at the expense of system stability. Some motherboards do not have this option, but generally the motherboard with overclocking capability provides this option.
AGP sideband Addressing (AGP sideband addressing)
When sideband addressing is allowed, the video card can handle more AGP requests without reducing the primary address/data transfer speed. With Nvidia, the "Enable" setting can improve the performance of the graphics card, but it can also cause system instability, especially after the system FSB overclocking.
AGP aperture size (AGP aperture size)
The specific function of this item is to set the size of the AGP card sharing system memory, its parameters can be selected 4MB, 8MB, 16MB, 32MB, 64MB, 128MB, 256MB seven kinds, default and preset 64MB, the recommended choice is the default value is 64M.