Apple power mac g5 late 2005 User Manual

							
Power Mac G5 (Late 2005) Take Apart — Memory (DIMMs) 41
Memory (DIMMs)
The Power Mac G5 (Late 2005) has eight DIMM slots for PC2 4200, 533 MHz, Double-Data-Rate 
2 (DDR2) SDRAM DIMMs. The slots are arranged in two banks of four slots each. Power Mac G5 
(Late 2005) computers come with a minimum of 512 MB of RAM, installed as a pair of 256 MB 
DIMMs in the two center slots. Additional DIMMs can be installed in the open DIMM slots, as 
illustrated below. 
Note: DIMMs must be installed in equal-sized pairs from the center outward.
The SDRAM DIMMs must be installedin pairs with one DIMM per bank.
DIMMs are already installed in these two slots. 
Install additional DIMMs in these two slots first. 
If slots are available, and you want to install more memory, install additional DIMMs in a similar fashion:  In pairs, one per bank, from the center outward. 
Bank 1 Bank 2  
						

							
Power Mac G5 (Late 2005) Take Apart — Memory (DIMMs) 42
In the Power Mac G5 (Late 2005), DIMMs must fit these specifications:
PC2 4200, 533 MHz, DDR2 DIMMs
240-pin module
Maximum number of memory devices on DDR2 SDRAM: 18
Nonparity
Unbuffered (registered or buffered DDR2 SDRAM cannot be used)
Either error-correcting code (ECC) or no error-correcting code (NECC) modules  
Note: Do not mix ECC and NECC memory modules within a pair. (See the “General 
Information” section of Troubleshooting for information on identifying ECC and NECC 
DIMMs.)
Important: Memory from older Macintosh computers is not compatible with the Power Mac G5 
(Late 2005).
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and 
remove the front inlet fan assembly.
Part Location
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Power Mac G5 (Late 2005) Take Apart — Memory (DIMMs) 43
Procedure
Locate the DIMM slots on the logic board.
Open the ejectors on the DIMM slot by pushing them out to the sides.
Holding the DIMM by both top corners, lift it straight up out of the computer.
Replacement Note: Align the DIMM in the slot and push both ends of the DIMM down until the 
tabs are vertical and the ejectors snap into place. 
Important: Do not touch the DIMM connectors. Handle the DIMM only by the edges.
1.
2.
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Power Mac G5 (Late 2005) Take Apart — Graphics Card/PCI Express Card 44
Graphics Card/PCI Express 
Card
Power Mac G5 (Late 2005) computers have four expansion card slots that accommodate PCI 
Express cards. The computers come with a high-performance 16-lane (16x) PCI Express graphics 
card installed in slot 1. The card contains the graphics processor unit (GPU) and provides the 
computers’ display ports. 
You can install additional PCI Express cards in slots 2–4. Install a second card in slot 3, a third in 
slot 4, and a fourth in slot 2 to take advantage of the bus bandwidth of each slot. Before installing 
a card, check the specifications to make sure it can operate in the Power Mac G5 (Late 2005).
Note: When certain high-end video cards are installed in slot 1, they block the adjacent PCI 
Express slot (slot 2). As a result, you can install PCI Express cards in slots 3 and 4 but not in slot 2. 
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.
Important: Combined maximum power consumption for all four expansion slots should not 
exceed 200 W. Combined maximum video RAM for all graphics cards is 1 GB.
While 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 
following table for details.
PCI Express Slot Bus Bandwith (x) Connector (Lane)
4 4x16 lane
3 8x16 lane 
24x16 lane
116x16 lane 
						

							
Power Mac G5 (Late 2005) Take Apart — Graphics Card/PCI Express Card 45
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer and lay it on its side with the access side facing up.
Part Location
Procedure for All Cards Except NVIDIA Quadro FX 4500
Install video cards in slot 1 only. Install other PCI Express cards in the slots labeled 2, 3, and 4. 
Warning: When removing or installing a card, handle it only by the edges. Do not touch its 
connectors or any of the components on the card. Lift the card straight out from the connector 
to remove it, and insert it straight into the connector to install it. Do not rock the card from side 
to side and don’t force the card into the slot. Once the replacement card is installed, pull on it 
gently to check that it is properly connected.  
						

							
Power Mac G5 (Late 2005) Take Apart — Graphics Card/PCI Express Card 4
Remove the screw that mounts the card to the enclosure.
If you are removing a video card, pull back the small locking clip at the front of the 
connector.
Holding the card by the top corners, gently pull up the card and remove it from its 
expansion slot.
Replacement Note: Align the card’s connector with the expansion slot and press until the 
connector is inserted all the way into the slot. If you’re installing a 12-inch card, make sure the 
card engages the appropriate slot in the PCI card guide.
Don’t rock the card from side to side; instead, press the card straight into the slot. 
Don’t force the card. If you meet a lot of resistance, pull the card out. Check the connector 
and the slot for damage or obstructions, then try inserting the card again.
Pull the card gently to see if it is properly connected. If it resists and stays in place, and if its 
gold connectors are barely visible, the card is connected. 
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Power Mac G5 (Late 2005) Take Apart — Graphics Card/PCI Express Card 4
Procedure for NVIDIA Quadro FX 4500 Card and Cable
To remove the Quadro FX 4500 card, do the following:
Remove the two screws that mount the card to the enclosure.
Disconnect the Quadro FX 4500 cable from the card.
Holding the card by the top corners, gently pull up the card and remove it from its 
expansion slot.
Replacement Note: When replacing the Quadro FX 4500 card, position the card over the slot 
by carefully aligning the end of the card in the first slot in the PCI card guide and the two screw 
holes in the card fence with the first two PCI card screw holes in the enclosure. Then press down.
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Power Mac G5 (Late 2005) Take Apart — Graphics Card/PCI Express Card 4
To remove the Quadro FX 4500 cable, do the following:
Remove the Quadro FX 4500 card from the enclosure (refer to preceding steps).
Locate the PCI card guide. 
Remove the two screws that mount the PCI card guide to the logic board.
Slide the card guide up to release the two latches from the PCI divider, and remove the card 
guide from the enclosure. 
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Power Mac G5 (Late 2005) Take Apart — Graphics Card/PCI Express Card 4
Disconnect the Quadro FX 4500 cable from the logic board and remove the cable from the 
enclosure.
5. 
						

							
Power Mac G5 (Late 2005) Take Apart — Battery 50
Battery
Tools
No tools are required for this procedure. You may, however, find a flat-blade screwdriver useful in 
removing the battery from its holder.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and 
remove the front inlet fan assembly. If a memory DIMM is installed in the slot next to the 
battery, remove the DIMM.
Part Location