The Western Digital WD Black SN8100 2TB is the objective winner of this comparison, securing more individual specification victories than its competitor. While both drives share identical performance in four key areas, the Western Digital WD Black SN8100 2TB holds the primary advantage in sequential write speeds, which are 4% faster than those of the Samsung 9100 Pro 2TB. This performance lead makes it the superior choice for users prioritizing write-heavy tasks within their storage configuration.

Users who require the fastest possible sequential write performance should select the Western Digital WD Black SN8100 2TB for their system. Conversely, the Samsung 9100 Pro 2TB is the better option for budget-conscious buyers, as it offers an 11% advantage in MSRP compared to the alternative. Since both drives provide equivalent specifications in the remaining categories, the final decision rests solely on whether the user values a lower cost or a slight increase in write speed.