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Overvolting unlocked 6950 Xfire

Shayper

Shayper

Shayper

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Joined
9 Mar 2010
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Fabric Nightclub, London.
Hi guys, after finally sorting out my crossfire issues, I was having a gander at overclocking both cards again (thanks again GJ02 for the disabling ULPS trick :)), and set the vcore of both of my cards to 1.25, whacked the cores up to 1000 on both, with 1450 on the memory. Instant grey screen of fail. Had a look in gpuz, and even when I overvolt both cards using afterburner, it still reads 1.1v. Is there a workaround for this? If not could I use a different program to do it? (running asus shader unlock bioses on both, so smartdoctor could be an option :))

I know I don't really need 1000/1450 plus but I managed to push my i7 up to 4.4 ghz, and I like an overclocking challenge :)

Cheers guys :)
 
There's an MSI Afterburner Beta out that lets you change the voltage on flashed 6950s.

(2.1.0 Beta 6)
 
Marvin said:
There's an MSI Afterburner Beta out that lets you change the voltage on flashed 6950s.

(2.1.0 Beta 6)
Click to expand...

No need to use the Beta, 2.1.0 is out now.

Andrei23 said:
What a coincidence, that's exactly what I'm using, succesfully I might add :D
Click to expand...

It usually works (not always!) so better start safe. I reckon that with the voltage up to 1.2mv he might be able to get to 950/975 but its luck of the draw!
 
Ezyryder said:
No need to use the Beta, 2.1.0 is out now.



It usually works (not always!) so better start safe. I reckon that with the voltage up to 1.2mv he might be able to get to 950/975 but its luck of the draw!
Click to expand...

Guess it really comes down to luck of the draw, as my HIS 6950 would not stay stable at anything above 925 even with 1300mV
 
It's not the overclocking that's the problem, it's the fact that the voltage isn't changed in anything but the afterburner GUI :confused:

Downloaded the new one, no difference really
 
Shayper said:
Hi guys, after finally sorting out my crossfire issues, I was having a gander at overclocking both cards again (thanks again GJ02 for the disabling ULPS trick :)), and set the vcore of both of my cards to 1.25, whacked the cores up to 1000 on both, with 1450 on the memory. Instant grey screen of fail. Had a look in gpuz, and even when I overvolt both cards using afterburner, it still reads 1.1v. Is there a workaround for this? If not could I use a different program to do it? (running asus shader unlock bioses on both, so smartdoctor could be an option :))

I know I don't really need 1000/1450 plus but I managed to push my i7 up to 4.4 ghz, and I like an overclocking challenge :)

Cheers guys :)
Click to expand...
Just got my 2nd card today and unlocked it.
What's the ULPS trick? I think I have disabled it in regedit, but I still can't get the unlocked CCC limits on the 2nd card no matter how many times I check/uncheck the "Overclocking range enhancement" option in smartdoctor.

I would like to be able to use ccc instead of After Burner (it disables powerplay when you go past ccc's limits) just to try and get 6970 clocks on the 1.1v's with powerplay enabled
 
Can anybody help me with this? Ive tested the cards without the unlocked sharada, and they each hit 1000/1450+ :eek: at relatively low volts (1.25 I think), but can't change the volts when I have the shaders unlocked :confused: thanks people :)
 
Hi,
I have the sapphire 6950's in Crossfire with a flashed asus 6950 bios with shader unlock.
I would flash using a stock asus 6950 bios and download smart doctor from asus and then tick enable overclocking limits. Shutdown PC. This will unlock the overclocking limit in catalyst control centre meaning overclocking upto 1600mhz GPU etc...
Then get the asus 6950 shader unlock bios available made by rui on techpower up and flash to your cards. Shutdown and reboot pc.
Now download afterburner 2.1.0 (not beta) and then enable unofficial overclocking by altering the CFG file and also enable voltage unlock in MSI AB options.

Well done you now have a card that can be overvolted by MSI AB and overclocked by Catalyst control centre.

I have my cards both running 1000mhz 1450mhz @ 1,250 mV.
 
Oh right cheers, sorted me out, didn't know gpuz reports stock volts -.-
Already done all the flashing, got the asus oc shader unlock bios on both :)
 
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