Apple MD772LL/A Personal Computer User Manual


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43Chapter 3 Making a Good Thing Better
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unbueredECCdualinlinememorymodules(UDIMMs).
AllinstalledUDIMMsmustmeetthesespecications:
 PC3-10600E,1333MHz,DDR3SDRAMUDIMMs
 Error-correctingcode(ECC)
 72-bitwide,240-pinECCmodules
 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)specication.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specication.
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.
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