Both cards are based on AMD's new Cayman core which is their first graphics processor to use a VLIW4 shader configuration.
Just like on all other similar products, AMD's two Cayman variants, called Cayman Pro and Cayman XT, are based on the exact same GPU silicon. The model variant a GPU chip becomes is decided after the die is produced, at some point before it is put on the card. Creating new SKUs from the same silicon by locking features has been common practice in the industry since at least the Radeon 9500 in 2002.
This article is to unlock the Radeon HD 6950. The HD 6970 has nothing that can be unlocked.
![[OFc] Member](./images/ranks/bullet_star_rank6d_4.gif "[OFc] Member")
![[OFc] Clan Council](./images/ranks/bullet_star_rank6_5.gif "[OFc] Clan Council")
