Additional Resources. 1  American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care (2005) 2  Management of Medical Emergencies in the Dental Office: Conditions in Each Country, the Extent of Treatment by the Dentist (2006) 3  Institute of Medical Emergency Preparedness.
GB is an acronym for gigabytes. Gigabytes is a unit of measurement used to quantify different capacities of certain components in a computer. Storage Memory. Hard drives also use the designation GB. It is not considered memory but the amount of information a hard drive can hold.
Quick Answer. A gigabyte (GB) is 1,000 times larger than a megabyte (MB), which is 1 million bytes. A GB of data storage can store approximately 1 billion bytes. One minute of an MP3 audio file is about 1 MB, while the size of a DVD movie is roughly between 4 to 8 GB. Continue Reading.