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

TheRealDeal said:
Whats the card like for gaming easy when comparing to the 6870 you had?
Click to expand...

Its great.

TBH I didn't think there would be much difference But in black ops my minimum FPS as increased especially when it gets busy.This is very noticeable Its a very good card for the money.


Looks like most will 900mhz on the core too and more with voltage tweaks.
 
I have flashed mine to a 6970 and all seems to be ok

Here it is in heaven at stock 6970 clocks.

6970stockheaven.jpg


880/1375 notice this is with all the shaders unlocked.

As I know the core will do 900mhz I have basically a 6970 for the cost of 6950 :D
 
Below is 6950 flashed to 6970 running at the default 6970 stock speeds 880/1375

6970stockheaven.jpg




Below is the 6950 overclocked to 900/1350

heaven6950900-1351.png


The extra shaders are clearly working
 
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?
 
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.
 
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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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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