In my BIOS my default AGP Aperture Size was set at 128MB. My vid card is a GeForce2 Pro, which has 64MB. Is this setting correct? Or do I need to lower it? Thanks.
Q. What should my AGP Aperture size be set to?
Q. How can I change my AGP Aperture size?
It should be set to half your system RAM if possible, and if not it should be set at some point below or equal to the amount of RAM that you have. However, it is possible to experience speed advantages of 2-3 fps from setting the AGP Aperture size to 256 regardless of the amount of RAM that you have, and there are some games that may have visual problems fixed by setting the AGP Aperture size to 256.
Beware that setting the AGP Aperture size too low (below 32) will actually disable AGP which will cause a speed decrease, although stability problems may be solved - see the 'My GeForce keeps on locking up or drops me back to the desktop during 3D applications. How can I fix it?' question for more information.
There are also some programs that have problems (stuttering, flashing or corrupted textures, blank screens) when the aperture size is set too high. Experiment and see which setting is best for your system and programs.
It's possible that if you set your AGP Aperture size to 256 you will be able to load the 64MB texture test in 3DMark2000 even if you haven't got enough video memory.
You can only change this in your BIOS setup - it may be called something slightly different, so look for a setting that is measured in MB and can be set to values such as 16, 32, 64, 128 and 256. Different motherboards allow different settings - for example, i815 motherboards will not allow you to set the aperture size above 64MB.
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