The specs are different for 100 chips specified hashrate above.
Perhaps their unit uses different chips? Have I done a mistake with hashrate?
The B8 itself houses 576 chips according to their specsheet.
The 100 chips included in the order are for prototyping purposes.
I asked them that same question since they advertise the chip differently on the site and got this as a response:
"The 75GH/s I stated is based on very conservative test results. In the right environment, the chips can run up to 100GH/s."