Depending on the configuration, the Power Mac G4 computer comes either an ATI or an Nvidia graphics card installed. The main features of the graphics cards are as follows:
| Graphics IC | Video RAM | Connectors |
| ATI RV200 | 32 MB DDR | ADC and VGA |
| Nvidia NV17 | 64 MB DDR | ADC and VGA |
Either graphics card can support two monitors at the same time.
The following sections describe the video connectors on the graphics cards.