What do read speed and write speed mean?

Reading speed refers to the operating speed of extracting data from the storage device, which can be understood as the speed of copying. Writing speed mainly refers to the speed when recording external data to a storage device, which can be understood as the speed of pasting.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Write speed and read speed both refer to the speed of data operations on the storage device, or the length of time required. They mean:

• Writing speed mainly refers to the speed when recording external data to a storage device, which can be understood as the speed equivalent to pasting.

• Reading speed refers to the operating speed of extracting data from the storage device, which can be understood as equivalent to the speed of copying.

The most important storage device in a computer is memory. Its storage speed is generally measured by access time, that is, the time it takes to process data with the CPU each time, measured in nanoseconds (ns). ) as the unit. Most current SDRAM memory chips have access times of 5, 6, 7, 8 or 10ns.

Extended information:

Uses flash memory as the storage medium, and the reading speed is faster than that of mechanical hard disks. SSDs do not use magnetic heads and their seek time is almost zero. The continuous writing speed is very amazing. Most solid-state drive manufacturers will claim that their solid-state drives have a continuous reading and writing speed of more than 500MB/s. In recent years, NVMe solid-state drives can reach around 2000MB/s, or even more than 4000MB/s.

The speed of solid-state drives is not only reflected in continuous reading and writing. Fast random reading and writing speed is the ultimate secret of solid-state drives, which is most directly reflected in most daily operations. Related to this is extremely low access time. The seek time of the most common 7200-rpm mechanical hard drive is generally 12-14 milliseconds, while solid-state drives can easily reach 0.1 milliseconds or even lower.

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