The Samsung 9100 Pro 4TB is the objective winner of this comparison, securing three spec victories against one for the Lexar NM1090 Pro 2TB. While both drives tied in three categories, the Samsung 9100 Pro 4TB holds a decisive lead in storage space, offering a 100% advantage in capacity over its competitor. This significant increase in total volume makes it the superior choice for users requiring extensive data retention and high-density storage solutions.

Users who prioritize maximum storage capacity should select the Samsung 9100 Pro 4TB to take advantage of its doubled volume. Conversely, the Lexar NM1090 Pro 2TB is the better option for budget-conscious buyers, as it maintains a 46% advantage in MSRP. Choosing between these components depends entirely on whether your primary requirement is the expanded capacity of the Samsung drive or the cost efficiency provided by the Lexar model.