Best card to run in a x16 slot in x4 mode? No dual 8x on this mobo

PCIe x4 Gen2 x4 slot PCIE5 is used for PCIe x4 lane width graphics cards And it has the following sockets: • 1 x Hyper Socket (M2_1, Key x4 slot PCIe x16 is what your GPU should be using but you are only getting x4 which means it is operating at a quarter of it's possible bandwidth

slotv PCIe x4: This slot has four lanes for data transfer It provides more bandwidth than an x1 slot and is commonly used for various expansion cards, including