1. 1024 megabytes (1024 x 1,048,576 [230] bytes).
2. One thousand megabytes (1000 x 1,048,576 bytes). Acronym: GB.
A unit of information equal to one billion (1,000,000,000) bytes or one thousand megabytes; SYN. Gigabyte, G, Gb, GB.
1000 or 1024 Megabytes, depending on who is measuring.
In computing, a measure of memory capacity, equal to 1,024 megabytes. It is also used, less precisely, to mean 1,000 billion bytes.