interesting...
so assuming 14MH/s
to get anywhere near a 6970 in terms of raw MH/s power even at a conservative guestimate.... your probably looking at at least 25-50 of these units all hashing away at around 14MH/s to the same pool under a single account to get near say 600MH/s ( 42 rasberries )
Obviously really inefficient but would look really neat in a rack with loads of these things hooked up... sort of backwards retro