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Gigabyte GTX 670 OC, voltage control problems.

post #1 of 21
Thread Starter 
I'm running one of the Gigabyte GTX 670s with the Windforce x3 cooler on it.
My current clocks are 1208MHz Boost (+150MHz offset) and 6308MHz on VRAM (+300MHz offset)

At these clocks the card is pretty stable and the temps stick to around 72C under extreme burn-in from furmark. (on a hot day ~30-34C in my room)
I want to increase my clocks more because I know there is room, but it becomes extremely unstable, even if I increase by only 10MHz.

So obviously I need to bump the Core voltage, but that is where the problem is.
I have tried MSI AB, ASUS GPU Tweak, and Gigabytes OC Guru II. All of them let me unlock the voltage adjustment, but its only adjusting the minimum core voltage.
I need to adjust the maximum, basically I am stuck at a maximum of 1.175V on the core clock and I want to push it higher then that.

Any ideas?
post #2 of 21
1.175 is the max this card can do unless you physically add a voltage regulator to the card, iirc. I don;'t think anyone's unlocked voltages with a bios update for the gigabyte gtx 670 OC.
post #3 of 21
Thread Starter 
Ah ok, so I'll have to wait for a custom BIOS then?
Thanks for the info!

Kind of disappointed by being voltage limited when I'm only at 72C during the hottest weather of the year though =/
post #4 of 21
You'll need the increased volts bios to do this.

Download the VGA Tools -- @BIOS tool.

Run the tool as administrator.

It should display which BIOS version you are using.

If you have F10 or F11 bios if even F12, download and flash your card using THIS bios.

If it's not f10-f12, post there and we can point you to the correct volt modded gigabyte BIOS.
post #5 of 21
Thread Starter 
The @BIOS tool returns an error every time I flash.

"Flash BIOS Failed! BIOS Version is same!"

Plus I was really hoping for something that can go farther then 31mV but i'll give it a try.
Maybe Ill get in contact with the makers of the BIOS and find out how they are reading it.
Edited by RogueRAZR - 8/13/12 at 8:22pm
post #6 of 21
Did you run it as admin? If so, what is the version number of your existing bios? Is it f12?

Finally, you can use the zotac utility to flash if the other one wont work. Install is in Chinese, but it's easy and the app itself is in English. Again, run as ADMIN.

http://www.mediafire.com/?76z6cfr5d2y7h77
post #7 of 21
Thread Starter 
Yeah its running as admin, and I am also running the F12 BIOS.
Ill give the other utility a shot. Thanks
post #8 of 21
Quote:
Originally Posted by RogueRAZR View Post

I'm running one of the Gigabyte GTX 670s with the Windforce x3 cooler on it.
My current clocks are 1208MHz Boost (+150MHz offset) and 6308MHz on VRAM (+300MHz offset)
At these clocks the card is pretty stable and the temps stick to around 72C under extreme burn-in from furmark. (on a hot day ~30-34C in my room)
I want to increase my clocks more because I know there is room, but it becomes extremely unstable, even if I increase by only 10MHz.
So obviously I need to bump the Core voltage, but that is where the problem is.
I have tried MSI AB, ASUS GPU Tweak, and Gigabytes OC Guru II. All of them let me unlock the voltage adjustment, but its only adjusting the minimum core voltage.
I need to adjust the maximum, basically I am stuck at a maximum of 1.175V on the core clock and I want to push it higher then that.
Any ideas?

Try the bios from this post. It worked for my Gigabyte GTX 670 OC with an F1 bios. The link is for a modified F4 bios so if you've already upgraded your bios to the official F4 version, then you'll need to downgrade it first to F1 before reflashing the modified bios. The modified bios increases the voltage limit to 1.21V and removes the throttling point at 69C. It also sets the defaul clock higher so you will need to readjust down all of your current offsets.
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post #9 of 21
Thread Starter 
I have version F12, pretty sure you cant use F1-4 with F10-12
post #10 of 21
Quote:
Originally Posted by RogueRAZR View Post

I have version F12, pretty sure you cant use F1-4 with F10-12

Well, you can technically, I've even used a FTW bios on my gigabyte windforce, But, you should probably stick closer to your brand, etc, and in the case of the windforce, don't mix and match the f series's. Or not. People are doing all sorts of weird things. Safest bet is replace the f12 you already have with the modded f12 if you can.
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