Thanks for this very helpful thread.
On my HP Z620, the G1 and G2 power cables, although they are 6 pin, only have 5 of the pins wired.
Also, one of the pins has 2 cables merged onto one.
Why is that?
Will the adapter you discussed there work to power an 8pin GTX graphics card? (gtx 1060 in this case)
I see maplin and other online retailers sell PCIE 6pin female to 2 x 8pin male adapters.
Would that work?