Three of BitFORCE consumes 240Watt (less if powered from a high-efficiency PSU which has 3 outputs @ 12V).
@BFL-Engineer: what is the efficiency of the PSU bundled with the Singles? I'm trying to get a feel for whether it makes economic sense for an end-user to look at replacing it with something more efficient. Also, do you have a specific 12V multiple-output supply that you could recommend?