How to telle which version my 7970 is

Did you look for the Dual BIOS switch next to the PCI-E Supplementary Power Connectors on the graphics card?

The voltage unlocked 3.1 version only has one DVI port.

If there's no switch then it's locked. Also the locked 3.1 version has two DVI ports.
 

wkdsean1988

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Aug 26, 2012
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If i have the unlocked version can somebody help me unlock the voltage, i have tried using msi afterburner and i edited the cfg file and set unlock voltage control to 1 but thats all i tried and didnt work.
 

wkdsean1988

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Aug 26, 2012
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Any ideas how to unlock the voltage using msi afterburner, i have briefly tried as iv wrote above but had no luck

Thanks