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Why NVMe is Faster Technology

One of the newest innovations in storage technology is the NVMe protocol. An NVMe SSD will deliver much faster speeds than a hard drive, and significantly faster speeds than a SCSI or AHCI SSD.

What is NVMe?

NVMe、NVM Express™ 或 Non-Volatile Memory Host Controller Interface Specification(非易失性内存主机控制器接口规范),是专门用于访问通过 PCIe® (PCI Express®) 总线附加的非易失性内存介质的通讯规范。该规范旨在利用固态硬盘的并行特性。NVMe 协议与 PCIe 总线结合,提高了 NAND 技术的读取和写入的速度,实现更快的非易失性存储。在此处了解有关 PCIe 的更多信息。

NVM Express Inc. 是计算机行业联盟,其创立旨在监督可扩展主机控制器接口的标准开发。

History of NVMe

固态硬盘 (SSD) 面世时旨在替换普通硬盘驱动器 (HDD)。最终,固态硬盘采用与普通硬盘相同的接口协议 (SCSI) 和物理连接 (SATA)。从普通硬盘驱动器转变至固态硬盘后,由于其技术更快,因此用户随即看到存储驱动器的速度变快,但是接口和连接的问题使得固态硬盘无法实现全速增益。


NMMe SSDs on a motherboard

NVMe performance

The combination of the NVMe protocol and the PCIe connection with an SSD results in read and write speeds that are four times faster than a SATA SSD with a SCSI protocol.

NVMe complements the parallel structure of contemporary CPUs, platforms, and applications. Parallel structure allows more commands to flow simultaneously. NVMe uses an optimized path to issue commands and complete input/output and supports parallel operation with up to 64,000 commands within a single I/O queue and 64,000 possible queues. Older protocols such as SCSI are serial in nature, with a limited number of commands in the single queue.

Because NVMe was designed specifically for the NAND technology used in solid state drives, it takes advantage of how the underlying technology works to make a faster drive.

©2019 Micron Technology, Inc. All rights reserved. Information, products, and/or specifications are subject to change without notice. Neither Crucial nor Micron Technology, Inc. is responsible for omissions or errors in typography or photography. Micron, the Micron logo, Crucial, and the Crucial logo are trademarks or registered trademarks of Micron Technology, Inc. The PCIE design mark is a registered trademark and/or service mark of PCI-SIG. The NVM Express design mark is a registered trademark of NVM Express, Inc. All other trademarks and service marks are the property of their respective owners.