Graphics boards are circuit boards equipped with graphics processors which plug into the "slots" inside of a Macintosh.
The high-end Ultimate Rez comes with 8 MB of video RAM and is priced at $699. The board can support high-resolution applications such as Adobe Photoshop and Illustrator, as well as QuarkXpress.
The Pro Rez is a $359 midlevel component aimed at multimedia-intensive Web designers and publishers. This includes 8MB of synchronous graphics RAM (SGRAM) that can operate at a resolution of 1152-by-870 pixels.
The Mac-Rocket, built upon a TwinTurbo 3D controller chip, is a 128-bit graphics accelerator that can support high-resolution QuickTime playback and MPEG video. MPEG is a major industry standard for playing back video. The board is priced at $279.