I've heard you can unlock the 6950's Bios and make it perform exactly like a 6970, but is it hard? I don't really know how to mess with all the software stuff and I'm afraid I could *** the card. Also I've been told that it doesn't work with the new 6950s
I haven't done it myself but i was under the impression it was just a bit of software you can run, and they are supposed to have a "reset" jumper much like a motherboard BIOS if you fudge it. As for it being impossible with the new ones that's news to me but it does make sense since they underwent a redesign recently (at least the Sapphire ones i was looking at did)
It won't be the EXACT same, from what I understand, but the performance difference is far outweighted by the price difference on an unlocked card.Check out the rumour of them locking that out. If there's any truth to it try to get an older card, if not, then just go ahead. It seems very Un-ATI to "lock" a card like that though.