NVMe SSDs

Non-Volatile Memory Express (NVMe) technology was introduced in 2011 to address the various bottlenecks of the SATA interface and communication protocols. NVMe technology utilises the PCIe bus, instead of the SATA bus, to unlock enormous bandwidth potential for storage devices. PCIe 4.0 (the current version) offers up to 32 lanes and can, in theory, transfer data at up to 64,000MB/s compared to the 600MB/s specification limit of SATA III. The NVMe specification also allows for 65535 command queues, which can have up to 65536 commands per queue. Recall that SATA-based SSDs are limited to a single queue with a depth of only 32 commands per queue. NVMe technology creates massive potential for storage devices through increased efficiency, performance and interoperability on a broad range of systems. It is commonly believed that the technology will become the new industry standard.

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