The Samsung 9100 Pro 4TB is the objective winner of this comparison, securing more individual specification victories than its counterpart. Its most significant advantage is a 99% improvement in sequential read performance, which provides a substantial lead in data access capabilities. While both drives share several identical specifications, the superior read speeds of the Samsung 9100 Pro 4TB establish it as the more capable hardware option for users prioritizing raw data throughput.

Choose the Samsung 9100 Pro 4TB if your primary requirement is maximizing sequential read performance for demanding workloads. Conversely, the Samsung 990 Pro 4TB with Heatsink is the better selection for budget-conscious buyers, as it offers a 21% advantage in MSRP. By weighing the necessity of high-speed data access against the cost-saving benefits of the lower MSRP, you can determine which drive aligns best with your specific storage needs and financial constraints.