Well i dint Connect them in the first place( i dint know i have to), so my comp dint boot after the bios when i gave 1.65vcore.. then funky told me to connect both of them and then my comp was stable at 1.65vcore and more...
Since u r having the zebby 540W i think you dint have any probelm, my SP 450W is only 20pins and hence i think i had problem, just my 2cents....