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How to unlock Gigabyte HD 7970 OC voltage?

post #1 of 26
Thread Starter 
As the title says, how can i unlock the voltage of my Gigabyte HD 7970 OC?
post #2 of 26
I just ordered one of these and I thought thier voltage is not locked.....
post #3 of 26
Unfortunately there seems to be no way to unlock it. Friend has this card and tried at least 5 different BIOSes, none helped. All reviews said that GB 7970 is great for overclocking, but they have been made using older revision of the card which is unlocked frown.gif. Gigabyte 7970 GHz Edition seems to be a bit better for oc, it has stock voltage of 1.25v.
Omega Ray
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Omega Ray
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700K @ 4,6GHz Asrock Z77 OC Formula EVGA 780 Ti Classified G.Skill 8GB 1866MHz  
Hard DriveCoolingOSMonitor
300GB Intel 510 & 520 SSD's Antec KÜHLER 620 /w Scythe GT AP-13 Windows 8.1 Pro X64 Asus VG236HE 120Hz  
KeyboardPowerCaseMouse
QPAD MK-50 Cherry MX Red Corsair AX860i Phanteks Enthoo Primo White Mionix Naos 7000 
Audio
Creative Z + Denon AH-D2000 
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post #4 of 26
Thread Starter 
It can't be true!.. How can i flash a bios? I've found one, that was the same as the HD 7970 used on HardOcp for their review of gigabyte, wrote on february 2012.. maybe it will works..
post #5 of 26
Ya - its locked at the hardware level - i dont think anyone has been able to unlock it. I returned my GB 7970, and now playing with an Asus Matrix....not too impressed with this $500 either

probably going to back down to an old reference 7970 and just oc it as far as i can go. We're nearing the end of this GPU cycle anyways
post #6 of 26
Thread Starter 
I contacted Gigabyte to ask how to unlock the voltage and they have told me that the Lock is in the BIOS and that i have to flash the Eproom, obviusly breaking the warranty.. That's all.. Then i've asked what i need to flash to the Eproom and they haven't answered yet.. Someone know something? What do i have to flash to the Eproom? Probably another BIOS..
post #7 of 26
No but could you please keep us updated. I have the same model and it only overclocks to 1070 on the core which is disapointing!
post #8 of 26
Flash the rom from the Ghz ed. card, this one works great on my rev 2.1 OC

---> http://www.overclock.net/t/1294856/cant-increase-voltage-gigabyte-7970-windforce-3x-gv-r797oc-3gd/60#post_18558126
post #9 of 26
RETURN IT

I bought one a couple months back and tried everything. Bios flash will do NOTHING.
post #10 of 26
Quote:
Originally Posted by Bruennis View Post

RETURN IT
I bought one a couple months back and tried everything. Bios flash will do NOTHING.

I get 1256mV with the GB GHz bios, bench stable @1200Mhz. Gaming stable clock about 1170Mhz. With the stock bios I cant get it stable over 1070Mhz.



Anyways, returning the card cuz I cant monitor any temps except gpu temp. Ordered an Asus matrix platinum instead biggrin.gif
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