User Guide

Basics Graphics Controller - 38
Graphics Controller
The graphics subsystem on the iMac logic board is designed
with the ATI Rage IIc graphics controller ASIC. The RAGE IIc
ASI contains 2D and 3D acceleration engines, a bidirectional
digital video port, a front-end scaler, a back-end scaler,
CRT controller, and PCI bus master capability.
The graphics subsystem features an industry standard
SGRAM SO-DIMM connector in addition to 2 MB of SGRAM
soldered to the logic board. The SGRAM SO-DIMM can
accommodate SO-DIMM sizes of 2 MB and 4 MB, for a total
SGRAM capacity of 6 MB.