The Samsung 990 Pro 4TB is the objective winner of this comparison, securing victory in four out of six evaluated specifications. Its most significant technical advantage is its sequential read speed, which outperforms the alternative by 1230 percent. While the Samsung 870 EVO 500GB maintains a lead in one category, the superior throughput offered by the 990 Pro 4TB establishes it as the clear leader in raw performance capabilities for high-demand storage tasks.

Users prioritizing maximum data capacity and high-speed sequential read performance should select the Samsung 990 Pro 4TB for their system. Conversely, the Samsung 870 EVO 500GB is the better choice for budget-conscious buyers, as it holds an 88 percent advantage in MSRP. Choosing between these two drives depends entirely on whether your primary requirement is the significant speed increase provided by the 990 Pro or the cost efficiency offered by the 870 EVO.