The Samsung 9100 Pro 2TB is the objective winner of this comparison, securing victories in four out of seven evaluated specifications. Its most significant advantage is its sequential read speed, which outperforms the alternative by 97 percent. This performance lead makes it the superior choice for users prioritizing raw data access efficiency and high-speed operations within their storage configuration.

Users who require maximum storage space should select the Samsung 990 Pro 4TB, as it offers a 100 percent capacity advantage over the smaller drive. Conversely, those who do not require the extra volume and instead prioritize the significant sequential read speed improvement should choose the Samsung 9100 Pro 2TB. Each drive serves distinct needs based on whether the priority is total data capacity or the specific performance gains provided by the faster model.