RE: DELL XPS-8700 + nVidia GTX10x0 GPUs
Poster Tim617 states that the GTX 1070 worked in his XPS 8700 system. Apparently, he used an alternative power supply. He reportedly encountered a crash at some point, possibly driver- or heat- related. However, his system got past POST and into the operating system and ran some games before it crashed. Thus, the existing system BIOS evidently presented no barrier.
He states that his system BIOS is version A11. He further states that "...the PC seems to only crash when I change the resolution at the home screen of elite dangerous but does [not] crash on any other game so idk it must be a glitch with the game itself."