Apple Mac Pro (Early 2009) User Manual download pdf (Page 41)

Chapter 3 Making a Good Thing Better 41

Installing Memory

Your Mac Pro comes with 3 or 6 GB of memory, installed as 1 GB unbuffered dual inline

memory modules (UDIMMs).

All installed UDIMMs must meet these specifications:

Â PC3-8500, 1066 MHz, DDR3 SDRAM UDIMMs

Â Error-correcting code (ECC)

Â 72-bit wide, 240-pin ECC modules

Â 36 ICs maximum per ECC UDIMM

When purchasing DIMMs for use in Mac computers, make sure that the memory

vendor conforms to the Joint Electron Device Engineering Council (JEDEC)

specification. Check with your memory vendor to ensure that the DIMMs support the

correct timing modes and that the Serial Presence Detect (SPD) feature has been

programmed properly, as described in the JEDEC specification. To check the

compatibility of your DIMMs, see the Macintosh Products Guide on Apple’s website at

www.apple.com/guide.

NOTICE: Apple recommends that you use Apple-approved DIMMs. DIMMs from older

Mac computers cannot be used in your Mac Pro. You can purchase Apple-branded

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

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Apple Mac Pro (Early 2009) User Manual Page 41