Random Access Memory DDR2 DDR3 DDR4 DDR5

does ddr3 ram work in ddr4 slot ddr4 in ddr3 slot It's a good question, because DDR3 and DDR4 hardware are incompatible, meaning DDR4 slot made for DDR3 or DDR5 DDR ddr4 in ddr5 slot Netac Basic DDR3 4GB 1600MHZ Desktop RAM Capacity: 4GB; Frequency: DDR3 1600MHz; Form Factor: 240-Pin UDIMM ; Transcend JetRam 4GB DDR4 3200MHz U-DIMM Desktop

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