KNC always deliver more than what they promised in the past. Jupiter was around sold around 400GH and it was perform at 650GH. I bought miner hardware from Avalon, BFL and KNC in the past and so far KNC purchase is the best experience. They do ship pre order with minimal delay, oppose to Avalon and BFL.  We all know past experience will not warranty future perform but at this point KNC IS the best option.  I bought KNC Jupiter and KNC Mercury and they both make profit for me.