We aren't running our chips in any kind of "Turbo Mode" which is keeping our power usage to 0.65W/GH with each chip producing 31.25GH/s
Our Enigma 4 model which can hash 3TH/s has 96 ASIC chips. They are mounted with 12 chips to a board, 2 boards to a module and 4 modules in this unit (I hope that all makes sense   )

So more more technical info: The Enigma 1 has 2 boards with 12 chips on each, so total of 24 chips. There is an RPI controller board + power distribution board that takes PCI-E 2x 8 pin + 1x 6pin for each board, so a total of 6 cables, which is an overkill anyway. Chris said you can just use 2x PCI-E 8pin per board also, so the 6pin cables are just optional.