There are X1 to X16 riser cable configurations that have extra power link to accommodate 75W but non SLI chipset wont support multi gpu especially when the GPU does not support CROSSFIRE ATI  or SLI Nvidia. Damage to the motherboard can happen when you do this sort of thing.  NVIDIA is no longer supporting SLI and will not write drivers for new cards to support it.  
I have a Dell XPS 8300 and two GTX 1050 Ti sitting around and was wondering if this PowerEdge M610x PCIe x16 riser card would work to use both at once? Using this either just have 1 run main monitor and 1 run side monitors or with the slowly growing list of dx12 multi gpu supported games.
XPS 8300, dual gpu setup, PCIe x16 riser card?