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Thread: 8800GT voltage mods

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  1. 04-01-2008, 12:26 AM #1
    Nosfer@tu
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    Im having HUGE performancde problems after doing the OCP mod.
    Tried 3dmark01, 06 and ATI tools.

    All points in the direction that I lost 50-75 % performance, CPU score is the same and system the same.
    Temp is not an issue!
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  2. 04-01-2008, 04:58 AM #2
    jason4207
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    Quote Originally Posted by Nosfer@tu View Post
    Im having HUGE performancde problems after doing the OCP mod.
    Tried 3dmark01, 06 and ATI tools.

    All points in the direction that I lost 50-75 % performance, CPU score is the same and system the same.
    Temp is not an issue!
    Is your link width still at x16?
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  3. 04-02-2008, 03:32 PM #3
    Niccolò
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    Is there a way to raise voltage through bios or with a pencil mod for this card? I have a Zotac card, and dunno if it's reference pcb.
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  4. 04-02-2008, 04:55 PM #4
    HitandRun
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    Quote Originally Posted by Niccolò View Post
    Is there a way to raise voltage through bios or with a pencil mod for this card? I have a Zotac card, and dunno if it's reference pcb.
    All the topics has been discussed in this thread already! I suggest you read the entire thread! BIOS is goo until 1.1V I believe!
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  5. 04-05-2008, 08:59 AM #5
    varga
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    Hello,

    I got my hands on an OEM Nvidia 8800GT, however it uses an ISL6568CRZ IC instead of the Primarion for GPU voltage regulation. The rest of the card is same as the reference. Here's a picture of the back of the card:
    >> Image <<

    Datasheet of the ic:
    >> Download <<

    I hope you guys can help me with a vgpu mod for this card. Currently running 700/1600/2000, stock voltages. If you need me to measure something, let me know!
    Last edited by varga; 04-05-2008 at 09:14 AM. Reason: Mod: rather linked the image
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  6. 04-11-2008, 11:28 AM #6
    Nosfer@tu
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    Quote Originally Posted by jason4207 View Post
    Is your link width still at x16?
    No I dident check that.
    But 75% Performance droop because of that shouldent happen.
    And it was at settings where everything worked out fine erliger!
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  7. 04-11-2008, 11:54 AM #7
    jason4207
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    Quote Originally Posted by Nosfer@tu View Post
    No I dident check that.
    But 75% Performance droop because of that shouldent happen.
    And it was at settings where everything worked out fine erliger!
    PCIe at x1 will do just what you described. I've seen it first hand on a P5B-Deluxe.

    Some boards are finicky, and will go to x1 or x4 for no apparent reason.
    ES Q9550 E0 @ 4.0GHz (471x8.5) 1.256v
    TR-Ultra-120-X, 115CFM 120mm fan
    Maximus II Formula @ 1884MHz FSB
    Ballistix DDR2-800 (4x1GB) 1132MHz 5-5-5-5-15 4-55-8-14-11-3-8-5-4-2T
    eVGA GTX 280 @ 702c/1404s/1260m (1.175v)
    Auzentech XPlosion DTS-Interactive Vantage 'X'-6,727
    300GB Velociraptor, PC P&C 750W
    (3)120mm, (2)90mm, (1)250mm case fans in TT Armor
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  8. 04-16-2008, 11:31 AM #8
    Nosfer@tu
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    Quote Originally Posted by jason4207 View Post
    PCIe at x1 will do just what you described. I've seen it first hand on a P5B-Deluxe.

    Some boards are finicky, and will go to x1 or x4 for no apparent reason.
    HEHE damm, I unsoldered it because of that

    I will try once more at some point.
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