Gigabyte

A gigabyte (derived from the SI prefix giga-) is a unit of information or computer storage equal to 1000³ bytes or 1024³ bytes (1000³ = one billion). It is commonly abbreviated GB (not to be confused with Gb, which is used for gigabits).

The usage of the word "gigabyte" is ambiguous, depending on the context. When referring to RAM sizes and file sizes, it traditionally has a binary definition, of 1024³ bytes. For every other use, it means exactly 1000³ bytes. In order to address this confusion, currently all relevant standards bodies promote the use of the term "gibibyte" for the binary definition.