PCI/PCI-X/PCIe - What do I have inside my Apple system? Last Updated 6/8/2010
Machine
Slots
Built-in Ethernet
Max Frame Size
Power Mac G4
3 PCI (33 MHz 64-bit PCI slots) (Not compatible with 10GbE, Quad or 6 port GbE)
1
1500
Xserve G4
2 PCI (64-bit 66 MHz PCI slots)
1
?
Power Mac G5
3 PCI-X (2 100MHz, 1 133MHz, both 64-bit slots)
1
1500
Power Mac G5 with PCIe
3 PCIe (2 x4, 1 x8)
2
9000
Xserve G5
2 PCI-X (64-bit 66 MHz PCI slots)
1
9000
Mac Pro
3 PCIe (configurable lanes)
2
9000
Xserve Xeon*
2 PCIe 2.0 (1 x8, 1 x16) or 1 PCI-X (x8) and 1 PCIe (x8)
2
9000
Intel Mac Pro
4 PCIe 2.0 (2 X x16) and (2 X x8)
2
9000
Intel Xserve
2 PCIe 2.0 (2 X x16)
2
9000
* Small Tree Communications does not support it's PCI-X cards on the Xserve Xeon. It does support the PCIe cards in PCIe slots for this machine however.