Samsung 64GB 4DRx4 PC4-2666V LRDIMM M386A8K40CM2-CTD M386A8K40BM2-CTD Memory RAM

Rank: 4DRx4 (4Rx4). ECC Type: ECC Load Reduced (LRDIMM). Capacity: 64GB. Kit Capacity: 64GB. Your computer loads a program or file you select from the hard drive in to your computers RAM, then it will access each bit of data from there.