The power supply only supports 5 GPU (and only cmes iwth 4 cables.. sucks). I want to have six cards in the rig (both the motherboard and frame support six cards). Not sure what to do.
Should I buy a cheap power supply for the motherboard and just run the six GPU alone off of the corsair?
The PSU cables *should* be able to handle both 8-pin connections (per line) at, or close to full load. (Which is what would be expected for a pegged 1070ti with only 1x 8-pin power connection, but we don't know exactly how much power is pulled through the slot vs. through the onboard power connector.)
However, the safer bet would be to use 1x 8-pin connection from each cable, then use 2x 6-pin to 1x 8-pin adapters to power the remaining cards, sourcing each of the 6-pin connections from a different line off the PSU. This should also give you some extra length to work with, rather than powering 2 cards directly off of the same line.