Mac Pro GPU Power
After the Pascal drivers came out, I bought a 1080 TI (8-pin, 6-pin) to upgrade from my 980 TI (I do a lot with Octane Render, so I'm always looking for more power). It didn't work and I spent a few hours trying to figure out why. I discovered it was that the card wasn't getting enough power. I'm driving it with the two PCI Express power sources from the motherboard combined to an 8-pin, and two of the SATA power sources combined for the 6-pin. That wasn't cutting it.
So I found a 500 watt power supply I had lying around, plugged that into it using the ol' paperclip trick and now it works. But I have to have the side of my case off and an unwieldy power supply plugged in from outside, with a scary-looking paperclip hack on the motherboard leads.
Does anyone have any suggestions for how to clean this up? I don't think there is a way to get sufficient power to the card from Mac itself, so I'm stuck with a secondary PSU. But maybe there is a neater way to run the power into the machine? Sadly, I'm using all my PCI card slots, so I don't think I can squeeze them in the back that way.
Read responses in forums.macrumors.com