The Western Digital WD Black SN8100 1TB and the Western Digital WD Black SN850X 2TB result in an objective tie across the evaluated specifications. While both drives offer competitive performance, the Western Digital WD Black SN8100 1TB holds a significant advantage in sequential read speeds, which are 104% better than its counterpart. Conversely, the Western Digital WD Black SN850X 2TB provides a substantial benefit in storage space, offering a capacity that is 100% better than the alternative.

Users prioritizing maximum data transfer rates should select the Western Digital WD Black SN8100 1TB for its superior sequential read performance. Those who require extensive storage for large libraries or heavy file management should choose the Western Digital WD Black SN850X 2TB to utilize its doubled capacity. Your final decision depends on whether your specific workflow demands faster read operations or the ability to store a significantly larger volume of data.