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Thread: ATI 3850/3870 Voltmod thread

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  1. #11
    Registered User
    Join Date
    Jan 2007
    Posts
    46
    Hi all, I see a few that want a picture taken AFTER the vGPU mod has been done.
    I can provide that because I understand what to do, I have a 3870, I have very good experience with soldering small
    components (even SM-components) and of course I have a camera and a webhost..
    The only thing I'm missing is a VR of 100kOhm. It's sunday here and EVERY store is closed.
    I will ask my friend at work tomorrow for a 100kOhm VR.

    Even though I have stock cooling on right now I have a EK waterblock on order so that should be settled in a couple of days.

    When I'm done with the mod I will try to take several pictures and help out as much as possible.
    Ohh, I have one question though, when I'm done with the mod and everything is ready to go!
    How do I know where to start with the VR.
    Is it just a matter of trial and error? To start with it set to max resistance (100kOhm) and then
    slowly turn it "down" and measure the vGPU readout until I get what I want (about 1.5v)?
    I have actually pretty good knowledge in soldering and electronics but have never done a vMOD of this kind before


    ##EDIT##
    I have to chose from one of the following ones, any opinions?


    type 44 Y for SM with only 10 turns



    type 64 with 15 turns



    Type 67W with 20 turns



    Type 89P with 20 turns
    Last edited by Klimpen; 12-09-2007 at 02:17 AM.

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