are they xlinked or connected through a usb hub? Also, controlled by Nexus7 or PC?
We are running on USB while some final issues are worked out with xlink. Xlink will be used though.
EDIT: Oh and of course, how many watts are you burning through? did the lights dim and the walls creak when you powered it up? 
We'll have the tools tomorrow to test power usage. The walls are still intact though.
VPS is now running over 800Gh/s with more arriving soon. Our pool has also grown substantially today.
