mebibyte

noun1

1. •
   Strictly, 2²⁰ (1024², or 1,048,576) bytes or 2¹⁰ (1024) kibibytes, as opposed to a megabyte.

   • At a minimum, a textual (command-line) system requires 256 mebibytes of RAM and a graphical (desktop) system requires 384-512 mebibytes of RAM. — 2012