Needs more pci-e connectors...
So you tape 3 S5s together and call it a new machine? Color me unimpressed. Sidehack got much better efficiency out of these chips; Bitmain isn't even trying.
Not quite right.
3 strings per board, though only 16 chips per string so the efficiency IS a little better than the S5.
Just not MUCH better, IMO they should have done 3x 18 strings or 2x 20 strings per board to get some GOOD efficiency.
Also IMO they wasted the 3'd PCI-E connector on each board, even 2 per board would have given plenty of overhead for significant overclock (with the lower voltage per chip these aren't going to overclock as high on average as an S5 anyway).