Guys, I just got my 6 Vega 56 cards... I wanted to power them with an EVGA 1600 G2 but I just don't have enough VGA power connectors! Do I really have to connect 2x 8-pin per GPU? Is that needed for mining?
Yes unless you want to risk damage the cards, or burn the whole place down. It's up to you.
Damage the cards and burn the place down by providing less power?...
The only logical explanation out of this would be if that forced the cards to pull more power from the PCI-E slot.
In any case, thanks all for your suggestions. I've ordered a couple of "8-pin to 2x 8-pin" splitters and a few "6-pin to 8-pin" adapters. Should hopefully do the trick.