Can a PCIe graphics card work on a PCIe slot?

Confused by PCIE ! Is my 'budget' AlderLake 6500XT build okay? pcie 4 gpu in pcie 3 slot With PCI-E being such a versatile standard, it comes in many forms pcie2 slot The PCI-E bus is used to communicate with the graphics card So does this mean that connecting a GPU in a PCI-E x1 slot would not affect

pcie slot splitter Drive Interface · PCI Express · PCI Express · PCIe Gen 4 x16 · PCIe Gen 3 x16 · PCIe Gen 4 x8 ; Graphics Processing Unit NVIDIA GeForce RTX 4070 Ti