How is SSD speed measured?
Using kibibytes rather than kilobytes clarifies the measurement of file and drive sizes.
1024 kibibytes make up a mebibyte, 1024 mebibytes make up a gibibyte and so on.
Mi for mebi, instead of M for mega.
All results are in the unit MB/s or megabytes per second.
The difference between the two types of SSD is the transport bus that it is connected to.
Tip: you might think of the transport bus as a logical connector or as a communications protocol.
SATA is the same transport bus as used by HDDs and is limited to speeds of 600MB/s.
PCIe is a different transport bus that allows a much higher transfer speed.
All of these scenarios can take advantage of the faster speeds associated with both large and small files.
