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Old 02-17-07, 06:52 PM   #7
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Default Re: I need an explanation please.

depends on how much RAM do you have, look here for more info regarding AGP Aperture Size, look at this:

Still, it's recommended that you keep the AGP aperture around 64MB to 128MB in size. Now, why is such a large aperture size recommended despite the fact that most graphics cards now come with large amounts of RAM? Shouldn't we just set it to the absolute minimum to save system RAM?
And for Fast Writes

This BIOS feature controls the AGP bus' Fast Write capability. Fast Write is a feature which accelerates memory write transactions from the chipset to the AGP device.

Fast Write allows the AGP device act like a PCI device. This allows it to bypass the main memory and directly access the data which improves AGP read performance. However AGP write performance is not affected.

While this feature may appear to greatly improve the performance of AGP graphics cards, its actual performance effect is quite negligible. Also, it reduces the overclockability of the graphics card when enabled.

Therefore, if you do not intend to overclock your graphics card, it is recommended that you enable AGP Fast Write for potentially better AGP read performance. However, you should definitely disable it if you intend to overclock your graphics card, or if any of your PCI cards start acting funny.
And for Side Band Addressing

This feature maximizes the efficiency and throughput of the AGP bus, by separating the address bus from the data bus via the addition of 8 extra 8-bit wide interface sideband lines (Sideband Address Port). This allows the graphics controller to issue new AGP requests and commands at the same time with other AGP data flowing via the main 32 address/data (AD) lines. This results in improving overall AGP data throughput.
Hope this helps you
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