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 demonstrate comparable performance across most metrics, the Western Digital WD Black SN8100 1TB holds a significant lead in sequential read speeds, which are 104% better than its counterpart. Conversely, the Western Digital WD Black SN850X 2TB offers a substantial advantage in storage capacity, providing 100% more space than the alternative.

Users who prioritize maximum data throughput for read-intensive tasks should select the Western Digital WD Black SN8100 1TB to leverage its superior sequential read capabilities. Alternatively, those who require extensive storage for large libraries or media collections should choose the Western Digital WD Black SN850X 2TB to benefit from its doubled capacity. Your final decision should depend entirely on whether your specific workflow demands faster read speeds or a larger total volume of available storage.