The Lexar NM1090 Pro 2TB is the objective winner of this comparison, securing more total spec victories than its competitor. The most significant advantage offered by this drive is its endurance, which is 100% better than the Western Digital WD Black SN850X 2TB. This substantial lead in total bytes written provides a clear durability edge for the Lexar model, making it the superior choice for users prioritizing long-term hardware longevity and write-heavy workloads.

Users who require maximum drive endurance for intensive tasks should select the Lexar NM1090 Pro 2TB to benefit from its superior TBW rating. Conversely, the Western Digital WD Black SN850X 2TB remains a viable alternative for budget-conscious buyers, as it holds a 46% advantage in MSRP. Choosing between these two storage solutions depends entirely on whether your priority is the increased lifespan of the Lexar drive or the cost savings provided by the Western Digital option.