The Samsung 990 Pro 4TB is the objective winner of this comparison, securing victory in four out of seven evaluated specifications. Its most significant technical advantage is its endurance, which offers a 100% improvement in total bytes written compared to the alternative. This superior durability rating establishes the drive as the more robust option for long-term data reliability and intensive write operations, outperforming the Western Digital WD Blue SN5000 4TB across the majority of the measured performance categories.

Users who prioritize hardware longevity and heavy-duty storage tasks should select the Samsung 990 Pro 4TB to take advantage of its doubled endurance capacity. Conversely, the Western Digital WD Blue SN5000 4TB is the better choice for budget-conscious buyers, as it provides a 42% advantage in MSRP. Choosing between these two components depends on whether the user values the higher write endurance of the former or the lower initial cost of the latter.