Apple Xserve (Early 2009) User Manual download pdf (Page 33)

33Chapter 2 Installing or Replacing Components

Adding Memory

The Xserve has 12 memory slots. The systems come with at least 3 GB of memory on

three 1 GB DIMMs. To improve performance and capacity, you can install up to twelve

DIMMs.

You can use the following memory in the Xserve:

1066 MHz DDR3 ECC (Error Correcting Code) DIMMs Â

1 GB, 2 GB, or 4 GB DIMMs (optimally, 6 or 12 identical DIMMs for a dual-CPU Xserve Â

and 3 or 6 identical DIMMs for a single-CPU Xserve)

Important: Apple recommends that you use Apple-approved DIMMs. Other DIMMs

might degrade the performance of the Xserve. DIMMs from older Xserve systems are

not compatible with this Xserve. You can purchase Apple-approved memory online

from the Apple Store at www.apple.com/store.

Before you purchase DIMMs other than those recommended by Apple, make sure that

the memory manufacturer conforms to the Joint Electron Device Engineering Council

(JEDEC) specication. Make sure that the DIMMs support the correct timing modes and

that the Serial Presence Detect (SPD) feature has been implemented in accordance

with the JEDEC specication. To check DIMM compatibility, see the Macintosh Products

Guide on Apple’s website at www.apple.com/guide.

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Apple Xserve (Early 2009) User Manual Page 33