The Samsung 9100 Pro 8TB is the objective winner of this comparison, securing victory in four out of six measured specifications. Its most impactful advantage is its sequential read speed, which outperforms the Samsung 870 EVO 500GB by 2543%. While the smaller drive maintains a lead in MSRP, the significant performance gap in data transfer capabilities establishes the larger drive as the superior technical option for high-demand storage tasks.

Users prioritizing maximum data throughput and capacity should select the Samsung 9100 Pro 8TB for their systems. Conversely, the Samsung 870 EVO 500GB is the appropriate choice for budget-conscious buyers who prioritize a lower MSRP over raw sequential read performance. Choosing between these two components depends entirely on whether your primary requirement is the substantial speed advantage offered by the high-capacity model or the cost efficiency provided by the smaller drive.