The PCIe slots on the mainboard share the bandwidth with the GPU, in particular the PCIe 4.0 x16 slot and the PCIe 5.0 x16 slot can share or vary bandwidth depending on the CPU type and configuration. The mainboard has a PCIe 5.0 x16 slot for the graphics card and another PCIe 4.0 x16 slot whose bandwidth varies depending on the CPU type, which indicates possible bandwidth sharing.