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HD 5850 Bios Flash

Nxttm

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#1
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



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

Thanks

Nxttm :)
 
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#2
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.
 
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#3
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
 
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