The Samsung 990 EVO Plus 2TB is the objective winner of this comparison, securing victories in five out of seven measured specifications. Its most significant advantage over the competition is its storage capacity, which is 100% better than that of the alternative. By offering double the space, this drive provides a substantial increase in total data volume for users who require extensive room for their files and applications.

Choose the Samsung 990 EVO Plus 2TB if your primary requirement is maximum storage capacity for large-scale projects or extensive media libraries. Conversely, the Silicon Power UD90 1TB is the better option for budget-conscious buyers, as it holds a 74% advantage in MSRP. Select the Silicon Power UD90 1TB if you prioritize a lower initial cost and do not require the additional capacity provided by the larger drive.