I remember when nobody would ever require more than 1MB of RAM.
Little did the speaker know that his own company would not be able to deliver a single program that small within 20 years.
I can also remember doing some testing that required multiple boots of the new Compaq Systempro that had 256MB of RAM. The Compaq BIOS was still counting byte-by-byte on boot.
That was a looooooooooooong day.