The Samsung 9100 Pro 8TB is the objective winner of this comparison, securing four out of six total specification categories. Its most significant technical advantage is its sequential read speed, which outperforms the Samsung 870 EVO 500GB by 2543%. While the latter holds a lead in one category and ties in another, the former dominates the performance metrics, establishing itself as the superior option for users prioritizing raw data transfer capabilities and high-capacity storage.

Choose the Samsung 9100 Pro 8TB if your primary requirement is high-speed sequential read performance and maximum storage volume. Conversely, the Samsung 870 EVO 500GB is the better selection for budget-conscious buyers, as it offers a 95% advantage in MSRP. Select the former for demanding professional workloads that benefit from faster data access, or opt for the latter if your priority is minimizing initial expenditure for a smaller storage footprint.