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What is SSD? explained

A solid-state drive (SSD) is a newer storage technology, although it's been around for a while, and it's probable that your current laptop has one.

What is a solid state drive (SSD)?
Image source - Google (Image credit: Samsung)

Unlike a typical hard disk, an SSD has no moving parts, as the name implies. NAND flash memory is used instead. An SSD's storage capacity is proportional to the number of NAND (Negative-AND) memory chips it contains. SSDs may now contain more NAND chips than ever before, allowing them to have capacities comparable to HDDs.

Many SSDs include SATA III connections, allowing them to be readily inserted in the place of a hard drive, and many are available in the 2.5-inch size, which is also used by smaller hard drives. However, SATA III's maximum data throughput is 600MB/s, which is acceptable for HDDs but not for SSDs, which means that if you have an SSD with a SATA III connection, the drive's performance is really limited by the SATA connection.


You may purchase SSDs with a PCIe connection to circumvent this issue. These drives plug into a motherboard's PCIe channel, allowing for significantly higher speeds. However, if your motherboard is tiny or you utilize your PCIe lanes for other devices like graphics cards or sound cards, you may not want an SSD to take up a lane.

NVMe (nonvolatile memory express) is new storage access and transport protocol for flash and next-generation solid-state drives (SSDs) that offers the highest throughput and reaction times for a wide range of business workloads.

Users demand quicker response times in both consumer and commercial apps today, even as the programs themselves grow more complicated and resource-intensive.

The NVMe protocol uses a PCI Express (PCIe) bus to access flash storage, which can sustain tens of thousands of simultaneous command queues and is therefore significantly quicker than hard drives and traditional all-flash architectures, which are limited to a single command queue, to help deliver a high-bandwidth, low-latency user experience.

The NVMe standard allows nonvolatile memory to be used in a variety of computer settings. It can also be expanded to work with yet-to-be-developed persistent memory technologies, making it future-proof.