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Thread: AGP VDDQ Voltage...




  1. #1
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    I have a A7N8X-Deluxe motherboard and overclocked my barton +2500 to a +3200. I was wondering if my AGP VDDQ Voltage need or should be raised to accomodate the raised FSB. Default is 1.5v. I have a ATI AIW 9800 Pro Card...thanks

  2. #2
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    No reason whatsoever to mess with that.
    :cheers:

  3. #3
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    I'm pretty sure I read somewhere that if the FSB is raised by a substantial amount, that all the buses and ports will be running at a faster speed as well. Wouldn't this mean that more voltage would be needed to support the card so it runs more stable? I'm getting these random reboots and was thinking this might be the problem.

  4. Default

    you should have the AGP/PCI buses locked, so they dont go above 33mhz/66mhz. Overclocking those only results in major errors and data corruption, and dont give you any increase in performance. So make sure you lock the buses. The only time you need to screw with AGP voltages I think if you volt mod your video card.
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  5. #5
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    Quote Originally Posted by Richscd2
    I'm pretty sure I read somewhere that if the FSB is raised by a substantial amount, that all the buses and ports will be running at a faster speed as well. Wouldn't this mean that more voltage would be needed to support the card so it runs more stable? I'm getting these random reboots and was thinking this might be the problem.
    Most late model mobo's can lock their AGP/PCI buses at spec speeds but mobo's with older chipsets that used the PCI bus for communication between the north and south bridges can't and it's those boards which may need a little extra voltage applied to the AGP though usually the PCI bus will cause probs before the AGP bus. With your's though they can be locked.

  6. #6
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    how exactly do you lock your agp bus in the bios?

  7. #7
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    In the advanced chipset features section should be ya AGP Frequency, just set that at 66 or 67MHz.

  8. #8
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    If theres no option, its automatically locked AFAIK

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