I'm using a Z800 Mainboard with an adapter cable on a standard 1200W Power supply. I want to install 3x 980ti GPUs in the machine, but the one in Slot 7 always gives me an error 12 ("not enough resources") in windows.
It does work as a single GPU in slot 7, but when I add even one other GPU, it throws this error. I can use two GPUs in the assignated PCIe slots, but I need three to work.
I played around with disabling everything I don't need and PCIE Adapter/Compute Settings in the BIOS, but to no avail.