Dude, Where's My 4 Gigabytes of RAM?

[Mihai]

In case you’re wondering, the progression is giga, tera, peta, exa.

Nope.
Because you are obviously talking powers of two, the progression is gibi, tebi, pebi, exbi.
(http://en.wikipedia.org/wiki/Binary_prefix#IEC_standard_prefixes)