Are you running the 2 pci-e off 1 physical cable? I have one connection to my PSU that has 2 PCI-e off it. I was running this way but read it was bad so I switched to having one pci-e cable off 2 molex connectors. Now I read that having the molex to pci-e isn't enough power and isn't safe. What would be the best method of powering them?
I would not use the molex to PCIx to power an Ant. The molex cables aren't designed to feed that kind of power.
I think using two PCIx on the same cable (without adapters) from the PSU should be fine. The manufacturer intended them both to be used on a high end GPU, so you should be fine.
M