Thanks for the great guide Dogie!  I just got my cube today and have had some problems, but it is up and hashing at 32ghs overclocked with 5 cards.  I have searched this forum for a solution to my issue and I do apologize if I missed the answer to this.  My problem is when I try and power on the cube with all 6 cards on board it just clicks and turns off.  I have tried different cards in different slots and have determined it is not a particular slot or card that is causing the issue.  I am using two dell power supplies at 375w each.  I have test with a corsair 860w and Seasonic 860w.  All do the exact same thing with 6 cards on board, but work fine with 5.  All my tests were at the low clock setting.  I am suspect of the fuse, but did put in the other that came with the cube.  Could this be causing my issue?  

Any ideas would be greatly appreciated!