I think its your PSU, I have only used one PSU under 1400watt and I had major problems. I blew up 1 motherboard and 1 CPU using a 1000watt PSU. I went to the 1200 antec and same problems. It would start up and instantly turn off. When I disabled 1 CPU it would boot up normally. Then changed the PSU and all was normal again. i went to 1600 Lepa and not a single issue.
I'm using x2 2680, Nvidia Titan, 64GB Corsair 1600mhz, and x12 3Tb drives, water cooling pump, + 7 fans, and slots full of Atto Raid / HBA / BlackMagic Decklink / 10Ge Myricom. But most of that wasnt in during the build of course.
Its more about the available 12v amperage and how spread out it is. I wasnt getting enough amperage on CPU outputs, thats why it blew.
Edited by x86box - 10/26/13 at 4:09pm