Hi,

I am trying to get a few NVIDIA GPU:s working with PCI-E risers (I have tried three 1060 3gb and one 1070), but windows does not detect them (even if only 2 cards in total are connected). If i connect the NVIDIA GPUs straight to the 16x PCI-E port the GPU:s all work and are stable. If i connect some of my AMD RX 580:s to the same pci-e riser that did not work for the NVIDIA ones (same riser, same motherboard etc), the GPU:s are detected normally. I have tried with 2 different motherboards. I have 2-3 different kinds of risers (all powered USB-risers).

I heard windows 10 only supports 8 GPU:s of the same brand, so my plan was to use 8 AMD cards and 2 NVIDIA one for a total of 10 from one machine (though I am not there yet.. max I have got to work at the same time at the moment is 5).