The Samsung 990 Pro 1TB and the Western Digital WD Black SN770 2TB reach an objective tie across the evaluated specifications. While both drives demonstrate competitive performance, the Samsung 990 Pro 1TB holds a significant advantage with its DRAM cache, which is 100% better than the alternative. Conversely, the Western Digital WD Black SN770 2TB provides a substantial benefit in storage space, offering a capacity that is 100% better than the Samsung model.

Users who prioritize the technical benefits of a DRAM cache should select the Samsung 990 Pro 1TB for their system. This drive is best suited for tasks that rely on the specific performance advantages provided by its cache architecture. Alternatively, those who require maximum storage volume should choose the Western Digital WD Black SN770 2TB. This option is the superior choice for users whose primary requirement is the increased capacity offered by the drive.