Solid State Drives, or SSD, is a computer drive that does not have any moving parts. Solid State is given because it refers to flash-memory devices, which have no moving parts. Flash memory is a mixture of RAM and storage. flash memory can hold data like RAM but can keep it regardless of whether the computer is powered up or not. There are two different flash memories Instead of having no moving parts, SSD’s are made of transistors and other pieces that can also be found on a chip. SSD’s use semiconductors to create or move heat and power very quickly, moving data to and from the drive very productively. This means there is less latency, so it can perform at the speeds of CPUs. SSD’s store non-volatile memory. Non-volatile memory is like RAM but can be saved when there is no power or if the computer crashes.
The solid-state drive replaced hard disk drives to enhance the performance between hard drives and CPUs. Before SSD, HDD struggled to perform at the same rate as CPUs. HDDs transmitted data through a magnetic disk called a platter. The platter was read by arms with read/write heads. To read or write the correct data the disc would have to turn to the correct area of an arm. This in itself took too long for the HDD to work with CPUs. The speed of hard drives was measured in milliseconds, compared to the CPU which is measured in nanoseconds, which are a million times smaller than a millisecond. SSD was created to eliminate the large difference in latency times between the hard drive and the CPU.