This is one of the problems you run into when not testing chips and / or having test boards with one chip.
It is harder to make out the reason why the chip is performing not as simulated.
Then again, they seem confident that they will be able to get the unit working on the ordered pcbs, so the problem can´t be too big a deal.
Let´s see what the results of the more detailed analysing is, and we will all be wiser.
at worse numbers. but no time delay .
now as kendog77 mentions the s-3 can be undervolted.
so a s-3 which runs at .75 watts doing 430gh pulling 323 watts.
may be able to do 400gh at 240 watts say .6 watts.
the sp30 camp will be hurt. well the preorder/btc only order model needs to be put to rest and the silver lining here may be people stop buying that way.