Comes with 512KB of VRAM in the form of two 256KB SIMMs.  Versions of the computer which came equipped with a CD-ROM player often had 1MB of VRAM pre-installed.

A 1MB VRAM configuration is achieved by replacing the two 256KB VRAM SIMMs with 512KB SIMMs.

Will not support 1-bit video on the Macintosh 12 inch RGB Display.