Random Access Memory DDR2 DDR3 DDR4 DDR5

does ddr3 ram work in ddr4 slot ddr4 in ddr3 slot No They don't even fit in the same slots There were a very few motherboards that had DDR4 and DDR3 slots, but you could only use one ddr4 in ddr5 slot PCIe x16 Slots 1 2 3 4 5 7 Memory Type DDR5 DDR4 Memory Slots 2 4 8 12 AURA

ddr4 slot vs ddr5 PRO H610M-E DDR4 Support Intel® Core™ 14th 13th 12th Gen Processors, Intel® Pentium® Gold and Celeron® Processors for LGA 1700 socket; Supports DDR4 Memory,