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*** The Official ATI Radeon HD 6950 Overclocking Thread ***

easyrider said:
Below is 6950 flashed to 6970 running at the default 6970 stock speeds 880/1375

http://i89.photobucket.com/albums/k224/easyrider_01/6970stockheaven.jpg[IMG]



Below is the 6950 overclocked to 900/1350

[IMG]http://i89.photobucket.com/albums/k224/easyrider_01/heaven6950900-1351.png[IMG]

The extra shaders are clearly working[/QUOTE]

you flashed your 6950 with a 6970 bios?

whats that about the extra shaders? is the 6950 a handicapped 6970? (sorry for stupid questions and merry christmas :P)
Click to expand...
 
theron said:
you flashed your 6950 with a 6970 bios?

whats that about the extra shaders? is the 6950 a handicapped 6970? (sorry for stupid questions and merry christmas :P)
Click to expand...

We both have. The 6950 is a 6970 minus aside from we have two 6 pin poiwer pins whereas the 6970 has one 8 pin and one 6 pin. That is it.

My 6950 is now a 6970, with all the shaders and the correct clocks. For me the best bit is that CCC now allows the same overcloking limits as the 6970 so the crappy 840mhz core limit that the 6950 had has gone.
 
When I am running my 6950 as a 6970 via the bios flash and it benches fine.
However, if I turn the power thingy on CCC to +20% I get artifacting in windows and during Heaven.

I can bench it as a 6950 with +20% power at 900mhz core and 1350mhz memory ok

Any ideas why this could be occuring?
 
mglover070588 said:
When I am running my 6950 as a 6970 via the bios flash and it benches fine.
However, if I turn the power thingy on CCC to +20% I get artifacting in windows and during Heaven.

I can bench it as a 6950 with +20% power at 900mhz core and 1350mhz memory ok

Any ideas why this could be occuring?
Click to expand...

try it again


what are the temps like on your card?
 
easyrider said:
try it again


what are the temps like on your card?
Click to expand...

Try what again - The flash or the +20% power or the bench? :p

I have not bothered looking at card temps as the fan has not got loud at all when benching.
Is this a daft thing to ignore? I thought the auto control would take care of it.

EDIT: My case has mediocre air flow and is full of components.
EDIT: Ran Unigine with 6970 bios and 880mhz core. I overclocked the ram to 1400mhz to see if I could get artificacting (iirc snow and funny lines on the screen is the ram not the gpu) with the power at +20% and I didn't get anything. It really is wierd what happened before and upping the power to +20% should make absolutely no difference. GPU did not go over 80c. I have looked at the Guru3d forums (and your posts there Easyrider) and all I can think of is that the ram timings from the 6950 need to be incorporated into the 6970 bios.
 
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mglover070588 said:
Try what again - The flash or the +20% power or the bench? :p

I have not bothered looking at card temps as the fan has not got loud at all when benching.
Is this a daft thing to ignore? I thought the auto control would take care of it.

EDIT: My case has mediocre air flow and is full of components.
EDIT: Ran Unigine with 6970 bios and 880mhz core. I overclocked the ram to 1400mhz to see if I could get artificacting (iirc snow and funny lines on the screen is the ram not the gpu) with the power at +20% and I didn't get anything. It really is wierd what happened before and upping the power to +20% should make absolutely no difference. GPU did not go over 80c. I have looked at the Guru3d forums (and your posts there Easyrider) and all I can think of is that the ram timings from the 6950 need to be incorporated into the 6970 bios.
Click to expand...

I think someone is working a Bios that is basically a 6950 with unlocked shaders keeping everything else the same, This could be benefical when voltage tweak is readily available.
 
I keep on getting the following error:
capturefs.jpg


I've also tried in cmd (as administrator)
atiwinflash -unlockrom 0
atiwinflash -f -p 0 Sapphire.HD6970.2048.101124.bin

Any ideas? The bios switch is in position 1 (by the crossfire bridge).


Out of interest, when I leave Winflash open with the above error it causes my network adapter to hang?
 
This is what I did from within windows.


- Unpack the Winflash download onto your desktop in a folder called "winflash"
- Save the 6970 BIOS in your Winflash folder and name it unlock.bin
- Click Start Button
- Type "cmd"
- Right click the entry and select "Run as Administrator"
- Black command prompt windows opens
- Type "cd %USERPROFILE%\desktop\winflash"
- Type "atiwinflash -unlockrom 0" <-- the 0 means first adapter, if you have multiple cards, physically uninstall all but the one you want to flash
- Type "atiwinflash -f -p 0 unlock.bin"
- It should complete the flashing process with a message saying something with "verified".


NOTE: ATIFLASH is done from DOS from a bootable USB
 
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When I enter "atiwinflash -f -p 0 unlock.bin" it closes without saying anything (it doesn't say verified nor does it get to the end of the progress bar).

I have a launch day HIS 6950 from OcUK if it helps.
 
Trifid said:
When I enter "atiwinflash -f -p 0 unlock.bin" it closes without saying anything (it doesn't say verified nor does it get to the end of the progress bar).

I have a launch day HIS 6950 from OcUK if it helps.
Click to expand...


Have you renamed the Sapphire.HD6970.2048.101124.bin to unlock.bin?
 
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Have you tried the "noobs" guide? Its on the same page under the text with inexperienced users. I had exactly the same prob and was getting to the point of pulling me hair out. Downloaded the package provided, ran it and voila, all done and dusted.
 
ok anyone help me out here
if i raise the core clock by just 1 in afterburner i get BSOD
if i use CCC its fine, but CCC im limited to 840 max core
would like to use afterburner
using 6950xfire with 6950 bios ( not flashed )

http://forums.overclockers.co.uk/showpost.php?p=18090996&postcount=432

its something to do with this ive done ( above link ), when i disable this function and my afterburner clocks go back to 840 max it doesnt BSOD
 
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