Currently, the highest-performing commercially available tier of NVMe SSD storage arrives in PCIe Gen 4 x4 architecture and that has allowed SSDs to make jumps from a little over 3,000MB/s performance up to an insane 7,000MB/s+. However, ever since m.2 NVMe SSDs arrived on the scene (with a protocol that is built on PCIe architecture), the differences between two near-identical SSDs can be somewhat vast. Remember when choosing a hard drive or SSD was so fantastically simple? Back when practically all drive media was SATA, the differences between one drive or another were thin and it was more about durability and responsiveness than it was about speed and IOPS. Should you buy the WD Black SN850 from 2020 or the WD Black SN770 from 2022? Two drives from the same brand, in the same product series and build on the same interface and protocol – yet remarkably different in price, performance and abilities. The WD Black SN850 or SN770 SSD – Which One Should You Buy?
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