What is a NVMe SSD and How Fast is it?

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2 PCIe cards can hit 4 GB per second PCIe support also allows cards to take advantage of the NVMe protocol An NVMe drive provides a large performance

Generally it is the added DRAM cache in NVMe drives that increases speed and power consumption, the flash memory itself is probably similar, so 2 SSD that supports PCIe enables it to use Non-Volatile Memory Express NVMe is a low-latency host controller interface specification

fortune slot machine 2 SSDs: SATA and NVMe SATA uses an older interface with one designed around hard drives while NVMe is designed for flash memory  2 drives are “keyed” at one end so as to prevent the end-user from inserting them in an incompatible socket PCIe NVMe drives are 'M' keyed SATA ones,