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Could someone edit my 4770 bios to up voltage?

Discussion in 'AMD / ATI' started by reverze, Nov 5, 2012.

  1. reverze

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    So around 2-3 years ago i had a Sapphire 4770 blue pcb with artic cooling solution.

    From day 1 the stock clock of 750mhz was not stable, resulting in minor artifacting , soon after i got a 4890 and forgot about the card.

    Now i am building a rig out of old parts for a friend and figured ill try the 4770 again , downclocked the card from 750 to 650mhz and unigine benchmark was suddenly artifact free.

    So i figured if the difference is so minor, it cant be a completely broken card. so i downloaded trixx and upped the voltage from 0.95 to 1.00 and viola 750mhz ran flawless.

    now trixx is acting a tad picky, sometimes applying voltage, sometimes defaulting, and wont keep the setting when restarting the computer.

    I hoped someone could edit my bios to up the voltage so the changes at permanent.

    Ive uploaded it below

    http://www41.zippyshare.com/v/33604357/file.html

    Also are there windows solution out there to flash these custom bios'?

    Thanks in advance!
     
  2. Law-II

    Law-II

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    Hi

    Make sure you are well read in bios recovery before attempting a vga flash

    http://www.techpowerup.com/printarticle.php?id=34

    Download GPU-Z and run GPU-Z

    Then make a backup of your vga bios [save to file]; keep it safe

    Example Extract vga bios.jpg

    Next

    Download RBE version 1.25 from TPU [our software] and run RBE; then load your vga bios image

    Example RBE 1.25 Example.jpg

    Select Clock Settings tab

    Example RBE 1.25 Clock info 02 & GPU registers Example.jpg

    edit GPU (MHz): Clock info 02 from 500 and change to 750

    next; adjust Voltage registers: select GPU registers

    Example RBE 1.25 GPU voltage registers Example.jpg

    next; change 0xD5 from 0.95 to 1

    next: save BIOS

    Note: it is best practice to flash bioses from a dos prompt

    Edit: Bootable flash drive http://www.techpowerup.com/forums/showthread.php?t=162964

    However you can use ATI Winflash - [open windows task manager and close all unessential programs before running ati winflash] ; http://www.techpowerup.com/downloads/2107/ATI Winflash 2.0.1.18.html [this is the latest version]

    atb (all the best)

    Law-II
     
    Last edited: Nov 10, 2012
    reverze says thanks.
  3. reverze

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    thanks law! will try it this weekend
     

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