GPU on PCIE 1x possible?

GPU on PCIE 1x possible? x1 pcie slot Dell XPS 8700 comes with a one PCIe x4 slot on the systemboard You can refer to picture below for it x16pciexp slot If you take a x1 connector and use a saw to open the end of the slot then you can physically connect a larger card and it should work I know at

x16pciexp slot x16 slot is the most capable slot of those and if you install an x16 supported card it works at fastest x8, x4 and x1 slots are

x16 slot this mobo has three pci-e slots physically 1x16lanes ,2x1line What i found, the x16 slot is supporting only one pcie line according to What is a PCI Express x1 Slot? The smallest of the PCI Express slots, your standard PCI Express x1 slot is essentially your starting point for most expansion