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HD 5850 Bios Flash

Discussion in 'AMD / ATI' started by Nxttm, May 17, 2013.

  1. Nxttm New Member

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    Hey,

    I wish to flash the bios on both my HD 5850 graphics cards but not sure what bios to flash them with. One is from XFX and the other from Sapphire

    [​IMG]

    (wanting to flash them to solve the screen flickering issue with multiple monitors and AMD overdrive)

    Thanks

    Nxttm :)
  2. theoneandonlymrk

    theoneandonlymrk

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    You could use the original bios for each with overwritten clocks and volts and have you looked at the Tpu gpu bios archive on the main site.
  3. Law-II

    Law-II

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    Hi

    +1 backup the original vbios for each card and edit core and *GPU & VTT registers if available

    *before flashing any modified vbios image

    Use a software oc application to determine if this will resolve the issue and or

    open catalyst control centre [Preferences-Advanced View] select - performance/AMD Overdrive

    (leave this option open)

    go to Presets/add Preset;Fill in Name e.g: Default vid OC /Location remove all ticks;select Save

    NEXT

    Goto Control Panel\ folder options/view - select - Show hidden files and folders

    NEXT

    open Computer/ explore C:\Users\*Your user profile*\AppData\Local\ATI\ACE\Profiles/you should

    see your newly created Default vid OC.xml

    NEXT

    Highlight - Default vid OC.xml - press right hand mouse button - select edit

    you will see - Feature name="CoreClockTarget_0

    <Property name="Want_0" value="15700" />
    <Property name="Want_1" value="55000" />
    <Property name="Want_2" value="72500" />

    raise the Want_0 value from 15700 to 40000 [40000=400Mhz]
    this will adjust your core clock once you are in the windows enviroment and allows you to

    continue using AMD's Ulps settings. [*or use sapphire trixx to disable Ulps]

    - once edited save file and exit

    Note: the entry 15700 line may appear twice in the xml once for each vga card; this will need adjusting for both cards, this will require adjusting each time a driver reinstall is actioned

    atb (all the best)

    Law-II
    Last edited: May 24, 2013

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