I've bought this card, and I'm very pleased with it.
It overclocks past the 6970 ref card, and in general handles all new games in average to extreme settings.( at ful HD settings)
Since its a non ref card it does not, and have never been, unlockable. It does not have a dual bios . Unfortunate experiences have been made, do not try this.
You could alllways discuss if this is a good choice, and I've chosen this with future cf in mind, as I'm "limited" with a cf only mother board.
If not, I think I would have chosen a pair of 560ti 1ghz from gigabyte