>>6
Officially the IEC wants us to use the ridiculous term "gibibyte" (GiB) for true binary gigabytes (2^30), and "gigabyte" (GB) for "marketing" gigabytes (10^9). Technically they are right because 10^9 is in line with all other SI prefixes (gigawatt, etc), but almost nobody ever uses the term "gibibyte", which sounds stupid and childish, and everyone sticks to "gigabyte" and uses it interchangably (with much confusion for noobs all around).