I think the interesting point that hasn't been raised yet (as far as I've seen in this epic thread) is how KNC have binned their chips, if at all. BFL have 2 chips per Jalapeno and each can be (and usually seems to be) of a different quality in terms of hash rate and they must manually balance which chips get put on which board to achieve the advertised hashrate. Bigger boards have way more chips and it then becomes a classic partitioning problem.

Given that a Jupiter has only 4 chips, each of which must be of a different quality (bin) how are they choosing which chips go in which box? Pure lottery or an undisclosed system? I understand that each chip has many cores and the firmware is attempting to disable bad cores in an effort to manage the binning at runtime, but the variance in the aggregate chip hashrates shown by people on this thread show that this strategy isn't yet working as intended.

Simple question: KNC are you speed testing each chip/board before placing it in a box?

Second question: What is the minimum guaranteed hashrate of a Jupiter?