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xfx radeon hd 6850 black edition

post #1 of 16
Thread Starter 
hey guys and gals im looking to increase the voltage on my xfx radeon hd 6850 black edition. i cant unlock the voltage control in any oc software and i have tried setting higher voltages in the gpu bios and non of my attempts have worked. my question is what are some tips/ suggestions and or examples of how i could increase the voltage on the card to achieve a 950/1200 stable over clock. i am currently st 935/1150 stable on extreme burning mode and 935/1210 standard mode with msaa disabled. any ideas?
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valkyrja
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post #2 of 16
Try using MSI afterburner. Go into the cfg file. Change unofficial overclocking from 0 to 1
and you will be able to bump the volts higher.
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post #3 of 16
Specifically:

Quote:
[Guru3d]: To enable the unofficial overclocking in this version it is necessary to edit the MSIAfterburner.cfg file located in the installation directory of AfterBurner (typically Program Files (x86) MSI Afterburner):


You need to alter the following:
Seek UnofficialOverclockingEULA field and add following text:
I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
Set UnofficialOverclockingMode to 1 to keep PowerPlay active (may not work on old ASICs), 2 to traditionally disable PowerPlay or to 0 to temporary disable unofficial overclocking path
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post #4 of 16
Thread Starter 
i have done all of that. ive even tried versions 2.0/2.1/2.2 beta they all allow me to push to 1550mhz on the core clock and 2000mhz on the mem clock but still voltage is locked.
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valkyrja
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post #5 of 16
Which voltage regulator chip is on that card?
Edited by damric - 4/13/11 at 2:38pm
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post #6 of 16
You need to go into the settings after modifying the CFG file and check the Unlock Voltages box.

Then restart MSI and it should work.
post #7 of 16
I had issues getting afterburner to do it to

Try sapphiretrixx
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post #8 of 16
Thread Starter 
Quote:
Originally Posted by RideZiLightning View Post
I had issues getting afterburner to do it to

Try sapphiretrixx
saphiretrixx wont do it either

im not sure what the voltage regulator chip is how would i find that out?
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valkyrja
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post #9 of 16
Take a close up picture of the back of your card so we can read the numbers off the chips. If this is like the Powercolor factory OC 6850 then it might not have voltage control.
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post #10 of 16
Thread Starter 
Quote:
Originally Posted by damric View Post
Take a close up picture of the back of your card so we can read the numbers off the chips. If this is like the Powercolor factory OC 6850 then it might not have voltage control.
you want the numbers off the chips or the numbers off the sticker? there are no chips showing on the back of my card. i would have to remove the shroud to be able to see the chips
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valkyrja
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