gibibyte

noun1

1. •
   Strictly, 2³⁰ (1024³, or 1,073,741,824) bytes or 2¹⁰ (1024) mebibytes, as opposed to a gigabyte.

   • In the example above, it appears that using gigabytes inflates the drive capacity by well over one gigabyte (or gibibyte—take your pick). — 2004