Apple MC560LL/A, MC561LL/A, MD772LL/A, MD770LL/A Installing Memory, ÂÂ Error-correcting code ECC

Installing Memory

Your Mac Pro comes with a minimum of 3 GB of memory in the single-processor model, or a minimum of 6 GB of memory in the dual-processor model, installed as 1 GB unbuffered ECC dual inline memory modules (UDIMMs).

All installed UDIMMs must meet these specifications: ÂÂ PC3-10600E, 1333 MHz, DDR3 SDRAM UDIMMs

ÂÂ Error-correcting code (ECC)

ÂÂ 72-bit wide, 240-pin ECC modules ÂÂ 36 ICs maximum per ECC UDIMM

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.

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.

Note:  Although the memory speed of the UDIMMS is 1333 MHz, they will operate at 1066 MHz or 1333 MHz depending on the processor in the computer.

Chapter 3   Making a Good Thing Better 43