The Samsung 9100 Pro 4TB is the objective winner of this comparison, securing victory in five out of seven evaluated specifications. Its most significant performance advantage is its sequential write speed, which is 163% better than that of the alternative. By outperforming the Samsung 980 Pro 2TB in the majority of technical categories, the 9100 Pro 4TB establishes itself as the superior option for users prioritizing raw storage throughput and high-capacity performance.

Users who require maximum write speeds for demanding workloads should choose the Samsung 9100 Pro 4TB to leverage its substantial performance lead. Conversely, the Samsung 980 Pro 2TB remains a viable alternative for budget-conscious buyers, as it holds a 58% advantage in MSRP. Selecting between these two drives depends on whether your primary requirement is the superior sequential write capability of the larger drive or the cost-effectiveness offered by the smaller model.