Good morning all,
Like a few others here I didn't check the power requirements before buying the 1080Ti for my Mac Pro 5,1, and have been scrambling to find a solution for powering it which doesn't involve a secondary PSU or overtaxing the 2x6pins.
I still have 1 PCIe slot available, and it struck me that since each slot is rated for 75W one ought to be able to hook a blank PCIe card in there and get a 6pin adapter out of it. But I can't find any such cards (Not that big a market I guess - only Macs route everything through the mobo) so thought I'd check with you guys if this has been attempted or if it's a ridiculous idea.
If it's just a case of hooking up 6 pins from the PCIe slot to a cable it seems straightforward to etch a card or scavenge a dead PCIe card and solder on connectors. If there needs to be a controller on the card to talk to the mobo to even activate power over PCIe, the idea isn't feasible. Any HW engineers who'd care to enlighten me on this?
Cheers!
Like a few others here I didn't check the power requirements before buying the 1080Ti for my Mac Pro 5,1, and have been scrambling to find a solution for powering it which doesn't involve a secondary PSU or overtaxing the 2x6pins.
I still have 1 PCIe slot available, and it struck me that since each slot is rated for 75W one ought to be able to hook a blank PCIe card in there and get a 6pin adapter out of it. But I can't find any such cards (Not that big a market I guess - only Macs route everything through the mobo) so thought I'd check with you guys if this has been attempted or if it's a ridiculous idea.
If it's just a case of hooking up 6 pins from the PCIe slot to a cable it seems straightforward to etch a card or scavenge a dead PCIe card and solder on connectors. If there needs to be a controller on the card to talk to the mobo to even activate power over PCIe, the idea isn't feasible. Any HW engineers who'd care to enlighten me on this?
Cheers!