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Overclocking Sapphire HD 6950 2GB (reference) - Page 3

post #21 of 50
Thread Starter 
Well damn, I guess this is what I deserve after trying to flash :\

I'll just head into DOS and see if I can unbrick this thing. (It still works, just one of the bios' is bricked)
Edited by Videowarrior - 8/15/12 at 2:23pm
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post #22 of 50
Thread Starter 
FIXED IT. I FEEL LIKE A ******* GOD.
Edited by Videowarrior - 8/15/12 at 3:22pm
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post #23 of 50
Quote:
Originally Posted by Videowarrior View Post

FIXED IT. I FEEL LIKE A ******* GOD.

Good to know that you fixed it! tongue.gif
As for the frequency I have no idea really..

Is there a power limit in Afterburner? If not try and raise the voltage a bit because as far as I know the 6970 has higher voltage at stock smile.gif
 
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post #24 of 50
you cannot change the freq in bios, they are hash encrypted on 6xxx. Changing it in bios will bsod on boot.

you need ab or trixx to change limits.

all you have to do to unbrick is shutdown, change the switch position and reboot.

then flip it back while booted, and hotflash back to a working bios.

it may sound complicated, but its not.

i bricked 1/2 a dozen bios fiddling around, and never had a problem getting back.

sorry i wasnt faster responding...
Edited by The Mac - 8/15/12 at 7:49pm
post #25 of 50
Thread Starter 
Quote:
Originally Posted by Matt-Matt View Post

Good to know that you fixed it! tongue.gif
As for the frequency I have no idea really..
Is there a power limit in Afterburner?...

Haha yeah, it took me a while to figure out how to work with DOS but I was able to recover the thrashed bios. I've bricked it 3 times
now and recovered it all the same way biggrin.gif

As for the powerlimit, yeah I have it boosted to 20%Mv (Without I get a 20-30 FPS drop)
Quote:
Originally Posted by The Mac View Post

you cannot change the freq in bios, they are hash encrypted on 6xxx. Changing it in bios will bsod on boot.
you need ab or trixx to change limits.
all you have to do to unbrick is shutdown, change the switch position and reboot.
then flip it back while booted, and hotflash back to a working bios.
sorry i wasnt faster responding...

I never knew you could flip the bios switch while it was on (I always assumed that'd fry something)
and I did get around to removing the CCC limits by using afterburner's unofficial overclocking mode.

Thanks for your help! biggrin.gif
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post #26 of 50
Thread Starter 
Just thought I'd throw this on here, after testing for a while I noticed something kinda funny xD
It's obviously a glitch but its humorous none-the-less.

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post #27 of 50
Thread Starter 
I got a quick question, I'm up to 970Mhz on the core, but I'm nearing the max safe voltage for this card (1.25V)

Should I stop there or keep upping the voltage to get beyond 1Gig? I feel like this card can do more.

Edit: I should also be fine OC'ing the memory as long as I don't over-volt it right?
Edited by Videowarrior - 8/15/12 at 11:55pm
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post #28 of 50
Quote:
Originally Posted by Videowarrior View Post

I got a quick question, I'm up to 970Mhz on the core, but I'm nearing the max safe voltage for this card (1.25V)
Should I stop there or keep upping the voltage to get beyond 1Gig? I feel like this card can do more.
Edit: I should also be fine OC'ing the memory as long as I don't over-volt it right?

For the core: If you feel like it can do alot more, why not try? It's interesting to see what performance gains come from pushing a bit more voltage and see what the max core clock is! smile.gif I'd advise to not pass 1.25v for 24/7 usage though as this Will most likely cause problems later in the cards life.

As for the memory, yes you can. Make sure that it's stable (Kombustor doesn't check this well) - 1200 Memory is deemed stable on my cards with it, yet if I play BF3 the textures are mucked up. You've also go to keep checking to see if you get any performance gain. As GDDR5 has error checking inbuilt and will revert back to clocks it knows it can do (stock) if it comes up with some errors.
 
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post #29 of 50
Thread Starter 
Quote:
Originally Posted by Matt-Matt View Post

As for the memory, yes you can. Make sure that it's stable (Kombustor doesn't check this well) - 1200 Memory is deemed stable on my cards with it, yet if I play BF3 the textures are mucked up. You've also go to keep checking to see if you get any performance gain. As GDDR5 has error checking inbuilt and will revert back to clocks it knows it can do (stock) if it comes up with some errors.

So go in Crysis or something when OC'ing the memory? (For tessellation and whatnot)

I've only just started overclocking the memory, maybe it'll even help me drop my core voltage smile.gif
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post #30 of 50
Quote:
Originally Posted by Videowarrior View Post

So go in Crysis or something when OC'ing the memory? (For tessellation and whatnot)
I've only just started overclocking the memory, maybe it'll even help me drop my core voltage smile.gif

It won't wink.gif
And yes Crysis could be good, I'd suggest BF3 as it will fill up more vRAM though smile.gif
 
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