Turns out the AMD Radeon HD 6950 was being held back by software limitations instead of hardware limitations. This allows for users to use a BIOS hack to unlock their HD 6950′s true potential and use it as an HD 6970 instead.
But if you are going to unlock your HD 6950′s power, make sure you don’t put too much strain onto it, as the card’s pins do differ from the HD 6950 and may cause some unwanted problems. And as usual, the tampering will void your warranty.
Source:-http://www.geeksmack.net/hardware/turn-your-amd-radeon-hd-6950-into-an-hd-6970
