The Samsung 9100 Pro 4TB is the objective winner of this comparison, securing more total spec victories than its competitor. Its most significant advantage is a sequential read speed that is 7900% better than the alternative. While the two drives tied in two categories, the superior performance capabilities of the Samsung 9100 Pro 4TB establish it as the more powerful hardware option for users prioritizing high-speed data access.

Users who require maximum performance should choose the Samsung 9100 Pro 4TB to take advantage of its massive lead in sequential read speeds. Conversely, the Western Digital WD Red Plus 4TB is the better choice for budget-conscious buyers, as it holds a 79% advantage in MSRP. Selecting between these two drives depends entirely on whether your primary requirement is the high-speed throughput of the Samsung or the lower cost offered by the Western Digital.