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    Anyone knows how to modify the default vbios of 7970m?? Really need help

    Discussion in 'Alienware 17 and M17x' started by lthuiyi, May 11, 2012.

  1. lthuiyi

    lthuiyi Notebook Enthusiast

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    Hi all,

    I've recently successfully put 7970m(ordered from Dell) into my M15x

    Everything goes well: the driver(Thanks to SlickDude80), temp, benchmark, games...

    After 2-day-test, I've achieved P5886 in 3d mark 11! (overclocking 7970m to 1000/1350)

    But, I'm facing a problem now - refresh Vbios to reduced voltage for stability testing

    I've successfully extracted the vbios of 7970m but seems even the latest version of RBE can't identify & load the vbios.

    Any idea for this??

    Thanks!
     
    lthuiyi, May 11, 2012
    #1
  2. SlickDude80

    SlickDude80 Notebook Prophet

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    The author of RBE has stated that it won't support 7970m because the bios has radically changed...plus even if you alter the vbios, the driver will prevent changes.

    The only way to modify the vbios is with a hex editor. We have some heavy hitters playing the vbios ...so just hang in there for now
     
    SlickDude80, May 11, 2012
    #2
  3. lthuiyi

    lthuiyi Notebook Enthusiast

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    Thank you bro!
    I've just sent u a personal message cuz I didn't read your reply here then
    Just ignore the message : )
     
    lthuiyi, May 11, 2012
    #3
  4. SlickDude80

    SlickDude80 Notebook Prophet

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    NP :) ... i'd expect that owners of the m17x R2 would be very interested in the experiments of changing the voltage on these cards too!
     
    SlickDude80, May 11, 2012
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  5. GeoCake

    GeoCake http://ted.ph

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    Pointless editing then? :p
     
    GeoCake, May 11, 2012
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  6. SlickDude80

    SlickDude80 Notebook Prophet

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    perhaps...but i'll let svl7 give us the final word. if he can't do it, then no one can :D
     
    SlickDude80, May 11, 2012
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  7. DR650SE

    DR650SE The Whiskey Barracuda

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    I killed a 5870 trying my hand at hex editing :p
     
    DR650SE, May 11, 2012
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  8. svl7

    svl7 T|I

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    Hahaha, thanks :p


    Did some testing, and I have some good and some bad news. First the bad news - no success on overvolting so far. When I try to increase the 3d voltage the card simply stays at 2d voltage.

    The good news - changing the clock works fine so far, and undervolting seems to work as well, though I haven't tested this thoroughly.

    Here's a GPU-Z screenshot with changed clock rates.
    [​IMG]
     
    svl7, May 12, 2012
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  9. SlickDude80

    SlickDude80 Notebook Prophet

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    awesome! You can undervolt, so there is hope for the R2 after all
     
    SlickDude80, May 12, 2012
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  10. lthuiyi

    lthuiyi Notebook Enthusiast

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    Svl7, how did u make it happen man?!
     
    lthuiyi, May 17, 2012
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  11. SlickDude80

    SlickDude80 Notebook Prophet

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    dude, you may have to install an undervolted vbios

    AMD 7970m - modified VBIOS
     
    SlickDude80, May 17, 2012
    #11