ALMOST ALL 6950s are unlockable, you may just have to do a little extra work for different cards.
Reference design cards are straight forward, for 1GB and and non reference design cards you will have to do some work using Radeon BIOS Editor.
- All reference cards
- All PowerColor non reference cards
- MSI Twin Frozr range (established yesterday on this forum) Link: http://www.overclock.net/amd-ati/101...-bios-fan.html
I'm certain you can unlock any card as I have read that people have unlocked 1GB cards even! So my advice to you would be to jsut do some research and just buy a card with a dual BIOS (almost certain that those cards will unlock)