It's not going to be very good. This is an APU. Can't really stuff 2 or more of these into a motherboard
i wonder if this thing will have a passive backplane incarnation. the whole thing, which is a motherboard of sorts, looks pretty self-contained and is only $130 USD, at what? ...30-40 watts?
it's got 400 stream processors, which puts it into somewhere around 100Mh/sec territory.
a ten-slot backplane setup would net a Gigahash, at 300-400 watts, for under $1,500 - a bit higher priced than three 5850s (if you can find them) in a three-PCIe slot motherboard with CPU etc., but much lower operating costs. the 5850s would draw almost 600W just by themselves.