NVMe stands for Non-Volatile Memory express. It is a new and innovative communication interface that addresses limitations posed by previous storage technologies. The NVMe protocol is designed for seamless use of high-speed storage media. It too is solid-state like SATA (Serial ATA) SSDs, however, the speed and performance are better than SSDs.
To break it down, NVM (Non-volatile memory) is a memory that can retain its stored data even if the system’s power gets cut. On the other hand, volatile memory loses stored data when there is no power. SSDs, spinning disks, and other disk storage drives are all examples of non-volatile memory. Keeping that in mind, NVMe technology uses non-volatile memory to retain your data, even if the power is lost.
NVMe also uses a newer interface to communicate with the CPU and operating system – PCI Express, or PCIe. This is a much faster interface than SATA or SAS. This new interface can communicate directly with the CPU, allowing for much higher bandwidth (and therefore greater speeds), as well as lower response times.
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