So the stock EVGA 1300 G2 won't work unless we change the stock cord? I am going to try to use a LEPA 1600w which is 15 amp (180W) per PCI-connector and it has 8 of them. (30 per socket x 4 rails (total of 6 rails on the PS) 12v3-12v6. Is it enough power for the Prisma? I am thinking yes, because 12v x 30amps = 360w. Anyway, I will let you know....

I run two S3s which are 340w on each of the 3 socket on the Lepa G1200, so I think I am good to go here.  (I run a total of 6 S3's on each Lepa 1200W)