radeon 9700 and settings

deleterious

Junior Member
Sep 23, 2002
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I have a radeon 9700pro and i would like to what i should set the aperature size as in my bios ? 64meg? 128meg? 256meg?
i have 512 megs of memory right now.
 

incallisto

Golden Member
Apr 30, 2000
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Originally posted by: deleterious
I have a radeon 9700pro and i would like to what i should set the aperature size as in my bios ? 64meg? 128meg? 256meg?
i have 512 megs of memory right now.
It's generally accepted that AS size should be set to half that of the physical memory. In your case: 128 or 256 should be fine.
 

AnAndAustin

Platinum Member
Apr 15, 2002
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:eek: That advice is a little dated now but will certainly do no harm none-the-less and is still a good rough guide and a sensible maximum.

:D Since the Rad9700 comes with 128MB gfx RAM, 64MB Aperture Size (AS) will be more than enough. Setting a size larger than this really has no benefits (although some do swear that huge Aperture sizes somehow yield enhanced 3D perf). Essentially the AGP Aperture Size is the MAXIMUM amount of system RAM which can be allocated to the gfx card for use when its own RAM is not enough. The size you set is the maximum, so if the extra RAM isn't needed by the gfx card then none will be allocated, hence setting a large size should never be problematic, esp on more recent mobos. As said the size you set is the maximum system RAM the gfx card can use should the need arise, but the amount the card actually gets is less than half the size you set due to tables, virtual addressing etc. When set to 64MB this will allow the gfx card to directly use UP TO 64MB of system RAM but this will only add an extra 26MB to the gfx card, similarly 128MB uses UP TO 128MB of your system RAM but 128MB of system RAM only provides the gfx card with 58MB of extra texture storage.

;) So basicly 64MB AS is fine for cards with 128MB, although 128MB AS will do no harm and is probably the best setting for most people to use providing they have at least 256MB of system RAM. Setting it higher should do no harm at all providing it is no more than half your system RAM, but it is pretty pointless and some mobos or component combinations can become problematic when the AS is set higher than 128MB or even 64MB sometimes.
 

BFG10K

Lifer
Aug 14, 2000
22,135
1,342
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Leave it at 64 MB, increasing to 128 MB or 256 MB only if you have problems.

Don't set it too high because it can waste RAM if it's not needed by the video card.
 

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