Question: can ddr5 fit in ddr3?
Answer: YES! a motherboard with DDR3 RAM will accept both DDR3 and DDR5 GPUs. ... DDR5 GPU on a DDR3 motherboard as opposed to a DDR4 motherboard. YES! the performance can differ. If the DDR3 MotherBoard supports dual graphics (i.e. integrated and dedicated graphics) then the performance will be smother while switching windows.