Introduced in September of 1984, The Mac 512k was a Mac 128k with 384k more RAM. It was replaced in April 1986 with the 512ke, which included an 800k floppy drive, and a 128k ROM. It was discontinued later that year. The 512k sold for $3,195, and the 512ke for $1,999.

Picture: Personal Computing Magazine, 12/84