The Samsung 990 Pro 4TB is the objective winner of this comparison, securing victory in four out of six measured specifications. Its most significant advantage is its sequential read speed, which outperforms the Samsung 870 EVO 1TB by 1230 percent. While the 870 EVO 1TB remains competitive in terms of its MSRP, which is 80 percent better than its counterpart, the 990 Pro 4TB offers a substantial lead in raw data transfer performance across the majority of tested categories.

Users prioritizing maximum data throughput and high-capacity storage should choose the Samsung 990 Pro 4TB for its superior sequential read capabilities. Conversely, the Samsung 870 EVO 1TB is the better option for budget-conscious buyers who prioritize a lower MSRP over the performance gains offered by the faster drive. Selecting between these two components depends entirely on whether your primary requirement is the significant speed advantage of the 990 Pro or the cost efficiency of the 870 EVO.