The Samsung 990 Pro 1TB is the objective winner of this comparison, securing more individual specification victories than its competitor. Its most significant advantage is a 1253% improvement in sequential write speeds compared to the Crucial MX500 4TB. While the latter offers a substantial lead in total storage space, the former dominates in raw data transfer performance, making it the superior choice for tasks that rely heavily on high-speed write operations.

Users who prioritize massive storage capacity should select the Crucial MX500 4TB, as it provides 300% more space than the alternative. Conversely, those who require the fastest possible sequential write performance for their specific workload should choose the Samsung 990 Pro 1TB. Your decision should depend entirely on whether your primary requirement is the ability to store large volumes of data or the need for rapid data writing capabilities.