Samsung 870 EVO Series MZ-77E2T0B 2TB

The primary distinction between the Samsung 870 EVO 2TB and the 1TB model lies in their storage capacity, offering double the space for users requiring significant data storage. Both drives share identical performance metrics, including sequential read/write speeds of 560/530 MB/s and identical random 4K performance, indicating the controller and NAND configuration deliver consistent speed across the series. A notable technical variation is the Terabytes Written (TBW) rating; the 2TB version is rated for 1200 TBW compared to 600 TBW for the 1TB unit, suggesting greater longevity for heavy usage scenarios. Furthermore, the 2TB model has a slightly higher peak operational power draw (up to 4.5W vs 4.0W for the 1TB). Ultimately, the choice hinges on whether the user prioritizes double the endurance and capacity or requires a slightly lower maximum power consumption.