Turn your AMD Radeon HD 6950 to HD 6970 BIOS flash mod
How to turn your S$459 card into a S$569 card… in just 5 minutes, no hardware tricks required!
What can be accomplished:
GPU: 800MHz to 880MHz
Memory: 1250MHz to 1375MHz
Shaders: 1408 to 1536 shaders
~11% performance increase!
Read on to find out more.
- Grab ATI Winflash from here (32 & 64-bit).
- Download HD 6970 BIOS. The Sapphire one I linked to will work on all reference design cards from any vendor.
- Make sure the BIOS switch on the card is set to the 1 position (pictured further down if you don’t know where it is).
- Run ATI Winflash, click Save to save your BIOS, so you have a backup in case something goes wrong.
- Load the HD 6970 BIOS into Winflash by clicking Load Image, followed by Program.
- Let the flashing process complete and reboot your system.
- Check the shader count using GPU-Z, it should show 1536. Make sure you use the linked version of GPU-Z, the official 0.4.9 version does not support HD 6900 Series properly. If you see a shader count of 1600, your GPU-Z version is outdated and you should get the one from the link here.
- To ensure maximized performance open Catalyst Control Center, go to the Overdrive tab and set the PowerTune slider to the +20% setting. The “Testing” section of this article has more data on that.
- Check stability in Windows desktop applications and games.
If you get an error like ID mismatch or Could not erase ROM, then you’ll have to do some extra work in a Windows command prompt (or DOS): Run atiwinflash -unlockrom 0 followed by atiwinflash -f -p 0 bios.bin where bios.bin is the path and filename of the HD 6970 BIOS you downloaded.