The Samsung 990 Pro 4TB is the objective winner of this comparison, securing victory in five out of seven measured specifications. Its most significant advantage over the alternative is its storage capacity, which is 100% greater than that of the Samsung 990 EVO Plus 2TB. While the latter component holds its own in specific areas, the superior total volume offered by the Pro model establishes it as the more capable hardware solution for high-demand storage requirements.

Users who prioritize maximum storage space for large libraries or professional workflows should choose the Samsung 990 Pro 4TB to take advantage of its doubled capacity. Conversely, the Samsung 990 EVO Plus 2TB is the better option for budget-conscious buyers, as it offers a 51% advantage in MSRP. Selecting between these two drives depends entirely on whether your primary goal is to minimize initial expenditure or to maximize the total amount of available data storage.