The Samsung 9100 Pro 1TB is the objective winner of this comparison, securing victories in three out of seven evaluated specifications. Its most significant advantage is its sequential read performance, which is 97% better than that of the alternative. While the Samsung 990 Pro 1TB remains competitive in three categories, it falls behind the primary winner in overall technical specifications, despite maintaining a notable lead in its own specific area of advantage.

Users prioritizing raw sequential read speeds for high-performance tasks should choose the Samsung 9100 Pro 1TB to take advantage of its superior throughput. Conversely, those who are more focused on the initial cost of their storage solution should opt for the Samsung 990 Pro 1TB, as it offers a 31% better MSRP. Selecting between these two drives depends entirely on whether your primary requirement is maximum read capability or a more favorable starting price point.