Apple Power Mac G5 PCI Card Guide Spécifications télécharger pdf (Page 7)

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Power Mac G5 Basics

What’s New

DDR Memory

Depending on the model, Power Mac G5 computers have either four or eight Dual Inline

Memory Module (DIMM) slots for Double-Data-Rate (DDR) Synchronous Dynamic

Random-Access Memory (SDRAM) devices. The computers ship with a minimum of 256

MB of RAM, installed as a pair of 128 MB DIMMs in two of the DIMM slots. You can install

additional DIMMs, provided they are installed in pairs of equal size. A diagram marked on

the logic board near the slots illustrates how the pairs must be installed.

To determine the types of DIMMs to install, refer to the table below:

DIMM Slots DIMM speed Maximum amount

4 (two banks of 2 slots) 333 MHz, PC 2700 up to 4 GB

8 (two banks of 4 slots) 400 MHz, PC 3200 up to 8 GB

In addition, DIMMs must ﬁt these speciﬁcations:

• 2.5 volt

• 84-pin module

• Maximum number of memory devices on DDR SDRAM:16

• Nonparity

• No error correcting codes (ECC)

• Unbuffered (registered or buffered DDR SDRAM cannot be used)

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Apple Power Mac G5 PCI Card Guide Spécifications Page 7