GPU in PCIEX4 instead of x16

There are basically three four different types of PCIe slots: x1, x4, x8, and x16 does it

PCIe x4: This slot has four lanes for data transfer It provides more PCIe x16: This is the largest PCIe slot with 16 data lanes PCIe x16 slots

candy slot png PCIe slots allow your motherboard to connect with your PC's most critical components and provide key functionality

can you connect pcie 40 in 30 slot However, the 2nd PCIe x16 slot works at PCIe x4 if two GPU are connected means the primary PCIe x16 slot gets 16 lanes and I still have 4 lanes