DONT BUY BFG PRODUCTS! bfg is teh suck. I strongly sugget NOT buying ANY BFG card. I've had a few video cards, and bfg is the lamest their drivers suck, they sometimes dont even MAKE DRIVERS FOR THEIR OWN PRODUCTS.
Maybe I seem a bit crazy with BFG but its due to my own experience with them. Two thumbs down for bfg I suggest any card but theirs.
I had a bfg 6600gt rma'ed, then got rejected out right due to some mod (reconnected gpu fan wires which were shown in photo before rma). I'd give them the benefit of doubt. And I'd use only nvidia's drivers.