AGP Apperture size setting

By Abomination
Jan 7, 2006
  1. I've got a 128mb FX5900XT graphics card. Should the apperture size in the mobo bios be set to 128mb or can you get a little performance tweak by setting it to 256mb or will increasing the size actually degrade the performance?

    Thanks for your help

    Win XP home
    P4 3.0 (478)
    FX5900XT (OC)
    Asus P4P800-e deluxe
    4x512mb PC3200 400mhz ram
  2. LipsOfVenom

    LipsOfVenom TS Rookie Posts: 160

    you should just set the BIOS aperature to 128 MB, since your card only has...128 performance increase if you set it higher...since aperature is just an opening and your Video card won't even go at 256.
  3. Vaerilis

    Vaerilis TS Rookie Posts: 54

    Being a fellow 5900XT owner (I have almost the same setup, too), I recommend setting the AGP aperture size to 128MB.
    However, some recent games (like Battlefield 2) may be somewhat faster with a 256MB aperture size. I've never experienced any boost in speed, but it might help you.
  4. tipstir

    tipstir TS Ambassador Posts: 2,392   +107

    Rule of thumb

    256MB DDR = 128
    128MB DDR = 64
    64MD DDR = 32

    Those are the settings you should make in you BIOS for your AGP Video Card.
  5. InstrumentalMan

    InstrumentalMan TS Rookie

    apeture size

    I used to own the same card, and almost the same mobo.
    i always set the apeture size to however much ram is on the video card. never had any problems like that. that should keep you in the safe zone.

    good luck
  6. Abomination

    Abomination TS Rookie Topic Starter Posts: 24

    thanks for the advice
  7. DragonFury

    DragonFury TS Rookie Posts: 63

    a nother good idea is set it to 1/4 your onboard ram 1 gig 256 , 512meg 128 , 2gig set it to 512 if possible
  8. Cartz

    Cartz TS Rookie Posts: 82

  9. Abomination

    Abomination TS Rookie Topic Starter Posts: 24

    Good link . Thanks for all your help guys
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