Apple M9032LL User Guide - Page 65

Adding PCI Express Cards

Page 65 highlights

Adding PCI Express Cards You can expand the capabilities of your Power Mac G5 by installing cards in the Peripheral Component Interconnect (PCI) Express slots. Your Power Mac G5 has four PCI Express slots that accommodate PCI Express cards and PCI Express graphics cards. About PCI Express Cards Your Power Mac G5 comes with a high-performance 16-lane (or 16x) PCI Express graphics card. This card, which contains the graphics processor unit (GPU) and provides the computer's display ports, is installed in slot1. The maximum bus width for each PCI Express slot is marked on the card guide. Slot 4 is a 4-lane (4x) slot, slot 3 is an 8-lane (8x) slot, slot 2 is a 4-lane (4x) slot, and slot 1 is a 16-lane (16x) slot. You can install additional PCI Express cards in any of the slots. Before installing a card, check the specifications to make sure it can operate in your Power Mac G5. Important: Combined maximum power consumption for all four PCI Express slots must not exceed 200 watts (W). The total combined maximum video random access memory (VRAM) for all graphics cards is 1 GB (for example, you can install one 512 MB VRAM card and two 256 MB VRAM cards for a total of 1 GB of VRAM). Although all slots can accommodate PCI Express cards that have up to 16 lanes, if you install a card that requires a greater bandwidth than the slot provides, the card will operate at the bandwidth of the slot. For example, an 8x card installed in a 4x slot, will operate as a 4x card. Refer to the table below. PCI Express Slot 4 3 2 1 Bus Bandwidth 4-lane (4x) 8-lane (8x) 4-lane (4x) 16-lane (16x) Connector size 16-lane 16-lane 16-lane 16-lane Chapter 4 Working Inside Your Computer 65

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Chapter 4
Working Inside Your Computer
65
Adding PCI Express Cards
You can expand the capabilities of your Power Mac G5 by installing cards in the
Peripheral Component Interconnect (PCI) Express slots. Your Power Mac G5 has four PCI
Express slots that accommodate PCI Express cards and PCI Express graphics cards.
About PCI Express Cards
Your Power Mac G5 comes with a high-performance 16-lane (or 16x) PCI Express
graphics card. This card, which contains the graphics processor unit (GPU) and provides
the computer’s display ports, is installed in slot1.
You can install additional PCI Express cards in any of the slots. Before installing a card,
check the specifications to make sure it can operate in your Power Mac G5.
Important:
Combined maximum power consumption for all four PCI Express slots must
not exceed 200 watts (W). The total combined maximum video random access
memory (VRAM) for all graphics cards is 1 GB (for example, you can install one 512 MB
VRAM card and two 256 MB VRAM cards for a total of 1 GB of VRAM).
Although all slots can accommodate PCI Express cards that have up to 16 lanes, if you
install a card that requires a greater bandwidth than the slot provides, the card will
operate at the bandwidth of the slot. For example, an 8x card installed in a 4x slot, will
operate as a 4x card. Refer to the table below.
The maximum bus width for each PCI Express slot is marked on the
card guide. Slot 4 is a 4-lane (4x) slot, slot 3 is an 8-lane (8x) slot,
slot 2 is a 4-lane (4x) slot, and slot 1 is a 16-lane (16x) slot.
PCI Express Slot
Bus Bandwidth
Connector size
4
4-lane (4x)
16-lane
3
8-lane (8x)
16-lane
2
4-lane (4x)
16-lane
1
16-lane (16x)
16-lane