The Crucial T705 4TB is the objective winner of this comparison, securing victories in six out of seven evaluated specifications. Its most significant advantage is its storage capacity, which is 300% better than that of the alternative. By offering substantially more space for data, this drive provides a clear technical superiority for users who prioritize high-volume storage solutions over other considerations.

Choose the Crucial T705 4TB if your primary requirement is maximum capacity for large-scale data storage. Conversely, select the Silicon Power UD90 1TB if your priority is the MSRP, where it holds a 93% advantage over the competitor. This makes the Silicon Power UD90 1TB the more suitable option for budget-conscious buyers who do not require the extensive storage volume provided by the higher-capacity drive.