agp aperture size?

[yellowjohn]

i have an ati radeon 9600xt 256mb agp graphics card.

what do i set the agp aperture to in the bios.it is set at 64mb which i think is too low,should it be 128mb or 256mb,many thanks.

[j2buttonsw]

We used to set the AGP aperture size to half whatever amout of RAM you had in your system (so set it to 128 MB if you have 256 MB RAM installed). This is the computer memory RAM not the memory you have on the video card (256 MB). I don't know why we did this and I never saw a discernable difference changing it.

[rojash]

Found this:
"The AGP aperture size is an available option configurable commonly through the computer BIOS that is commonly set to a default of 64MB. AGP aperture size defines how much system memory the AGP controller is allowed to use for texture maps. While it may be possible to increase the overall performance or prevent problems with some video cards we recommend you leave the AGP aperture size at 64MB unless instructed otherwise by your video card manufacturer."

here:
http://www.computerhope.com/jargon/a/agp.htm

And this:
"Now, many people recommend the AGP aperture size should be half of the amount of RAM your system has. However, that's wrong for the same reason why swapfile size shouldn't be 1/4 of the amount of RAM you have in your system. Like the swapfile's size, the required AGP aperture size will become smaller as the graphics card's memory increases in size. This is because most of the textures will be stored on the graphics card itself. So, graphics cards with 32MB of RAM or more will require a smaller AGP aperture than graphics cards with less RAM."

here:
http://www.adriansrojakpot.com/Speed_Demonz/New_BIOS_Gui de/AGP_Aperture_Size.htm

[yellowjohn]

thanks rojash very helpfull.