Specifications

2 - Power Mac G5 Troubleshooting
General Information
PCI and AGP Cards
The Power Mac G5 computer has four expansion card slots, three of which accommodate
Peripheral Component Interconnect (PCI) cards and one that accepts an advanced
graphics port (AGP) video card. AGP cards and PCI cards have different connectors, so
you cannot insert a PCI card into the AGP slot.
Note: Maximum power consumption for all four expansion slots (the three PCI expansion
cards and the AGP card) should not exceed 90 watts (W).
AGP Cards
The AGP video card, installed in slot 1, contains the graphics processor unit (GPU) and
provides the computer’s display ports. Slot 1 is designed specifically to accept AGP cards.
This 533-megahertz (MHz) slot accommodates 1.5-volt (V) AGP cards.
PCI Cards
The remaining three expansion slots, labeled 2, 3, and 4, accommodate PCI cards up to
12 inches long. Depending on the Power Mac G5 model, you can install either PCI or
PCI-X cards.
Note: To determine if a Power Mac G5 computer can accommodate PCI-X cards, check
the number of DIMM slots on the logic board. Computers with four DIMM slots have
33 MHz PCI slots and cannot use PCI-X cards; computers with eight DIMM slots can
accommodate 100 and 133 MHz PCI-X cards. See the chart below.
Card type PCI slot Card speed
PCI* slots 2, 3, and 4 64-bit, 33 MHz
PCI-X slots 2 and 3 64-bit, 100 MHz
slot 4 64-bit, 133 MHz
AGP Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4