A-Tech 64GB 2x 32GB 2Rx4 PC4-21300R DDR4 2666MHz ECC REG RDIMM Server Memory RAM

Frequency: 2666MHz (MT/s). Class: DDR4. Rank: 2Rx4 (Dual Rank x4 based). Kit Capacity: 64GB. Capacity: 32GB. 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.