Originally Posted by Awaz
EDIT: Please note though that not all 6950 can be unlocked. The one you are looking at (Twin Froz III) can definitely be unlocked and so also any reference design (which are getting as rare as a green moon). The 1 GB version has a low success rate of unlock and most other non-reference 6950 has a low rate as well.
Actually since the Twin Frozr III is non-reference in can NOT unlock. I have seen countless owners of the TF3 brick their cards because they didn't research properly (there was a thread on OCN only yesterday). So no, the TwinFrozr III does not unlock, some have been able to get the 6970 BIOS to register but the core clock etc. are all wrong and they have had some issues flashing back to the original BIOS. Especially since the TF3 does NOT have the BIOS switch like the reference boards do
OP: You are best off with a reference 6950 2GB, since almost all the reference 6950's unlock and if the BIOS flash doesn't work, the reference cards have the BIOS switch so you can just switch to the second BIOS and then reflash the first to original 6950 BIOS.
But definitely get the 6950 2GB, the little extra VRAM will come in handy if you start extending your display