Each C200 mines at 20GHash/s, consuming a mere 100W. Designed for high density operation, the C200 provides efficient movement of air and is suitable for operating in a fully loaded 42U rack (up to 40 units per rack)...When compared with GPU mining, the C200 consumes 100 times less electricity and 14 times less rack space, meaning there's virtually no operating cost associated with this device.
200 Mhash per watt? If you can deliver the hardware at that spec, you will obliterate the competition.
We wouldn't advertise it if it wasn't possible. These are the numbers that come back from simulations with the chip manufacturer, because we don't have any real chips to play with yet - the real numbers will vary a bit, of course, but we'll commit to not deviating materially from these specs.