About GB (Gigabyte)
The gigabyte is a various of the unit byte for digital information. The prefix giga implies 109 in the International System of Units (SI). Also, one gigabyte is 1000000000bytes. The unit image for the gigabyte is GB.
Also, the term is used in some fields of information technology and computer science to denote 1073741824 (10243 or 230) bytes, particularly for sizes of RAM.