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 primary differentiator is their distinct focus. The Western Digital WD Black SN8100 1TB provides a significant advantage in sequential read speeds, which are 104% better than its counterpart, while the Western Digital WD Black SN850X 2TB offers a 100% increase in total storage capacity.

Users prioritizing raw data transfer speeds should select the Western Digital WD Black SN8100 1TB to leverage its superior sequential read performance. Conversely, those who require extensive space for large libraries or numerous applications should choose the Western Digital WD Black SN850X 2TB to take advantage of its doubled capacity. Your final decision depends entirely on whether your specific workflow demands faster data access or a larger overall footprint for your files.