The Western Digital WD Black SN8100 1TB is the objective winner of this comparison, securing more individual specification victories than its competitor. While both drives share several identical performance metrics, the Western Digital WD Black SN8100 1TB holds a distinct advantage in sequential write speeds, which are 10% higher than those of the Lexar Professional NM1090 Pro 1TB PCIe Gen5 NVMe M.2 SSD. This performance lead makes it the superior choice for tasks requiring rapid data writing.

Users who prioritize write-heavy workloads should select the Western Digital WD Black SN8100 1TB to leverage its superior sequential write capabilities. Conversely, the Lexar Professional NM1090 Pro 1TB PCIe Gen5 NVMe M.2 SSD is the better option for those focused on long-term hardware longevity, as it offers a 17% advantage in endurance measured by total bytes written. Choosing between these two drives depends entirely on whether your primary requirement is faster write performance or extended drive durability.