Cooling and powering a single hashboard would be pretty easy and you could spread them around the house(s) to minimise noise and heat but still have the efficiency of the S7.
I think this would be a neat idea, as would the middle ground of a 2 Board S7. I am fairly certain that an S5 Controller with the S7 firmware loaded can be used for the S7.
Rich
If i could get the hardware id be happy to give it a shot, dont really mind opening up a new S7 and potentially breaking it .
Getting the S7 isnt such an issue, but the big problem is getting additional controllers probably will be, i couldnt even get bitmain to send me an S3 controller...so ordering 2x S7 controllers...not likely.