Question: are ddr4 and ddr5 compatible?
Answer: DDR4 denotes the speed of ram and DDR5 is for Vram (graphics card memory). The slots are completely separate. DDR5 rams are not yet available for PC. ... So it doesn't matter either the motherboard is DDR3 or DDR4 it will surely accomodate a DDR5 graphics card if it has a PCI-E 3.0 ×16 slot.