Asus MAXIMUS IX EXTREME - Page 22

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Chapter 1: Product Introduction
Chapter 1
Memory configurations
Youmayinstall1GB,2GB,4GB,8GBand16GBunbufferedandnon-ECCDDR4DIMMs
intotheDIMMsockets.
 YoumayinstallvaryingmemorysizesinChannelAandChannelB.Thesystem
mapsthetotalsizeofthelower-sizedchannelforthedual-channelconguration.Any
excessmemoryfromthehigher-sizedchannelisthenmappedforsingle-channel
operation.
 Duetothememoryaddresslimitationon32-bitWindowsOS,whenyouinstall4GB
ormorememoryonthemotherboard,theactualusablememoryfortheOScanbe
about3GBorless.Foreffectiveuseofmemory,werecommendthatyoudoanyofthe
following:
a) Useamaximumof3GBsystemmemoryifyouareusinga32-bitWindowsOS.
b) Installa64-bitWindowsOSwhenyouwanttoinstall4GBormoreonthe
motherboard.
c) Formoredetails,refertotheMicrosoft
®
supportsiteathttp://support.microsoft.
com/kb/929605/en-us.
 ThedesignoftheDIMMfanmayvary.EnsurethattheDIMMfantstothe
motherboard.
 ThedefaultmemoryoperationfrequencyisdependentonitsSerialPresenceDetect
(SPD),whichisthestandardwayofaccessinginformationfromamemorymodule.
Underthedefaultstate,somememorymodulesforoverclockingmayoperateata
lowerfrequencythanthevendor-markedvalue.
 Forsystemstability,useamoreefcientmemorycoolingsystemtosupportafull
memoryload(4DIMMs)oroverclockingcondition.
 Memorymoduleswithmemoryfrequencyhigherthan2133MHzandtheir
correspondingtimingortheloadedXMPproleisnottheJEDECmemorystandard.
ThestabilityandcompatibilityofthememorymodulesdependontheCPUs
capabilitiesandotherinstalleddevices.
 AlwaysinstalltheDIMMSwiththesameCASlatency.Foranoptimumcompatibility,
werecommendthatyouinstallmemorymodulesofthesameversionordatacode
(D/C)fromthesamevendor.Checkwiththevendortogetthecorrectmemory
modules.
 ASUSexclusivelyprovideshyperDIMMsupportfunction.
 HyperDIMMsupportissubjecttothephysicalcharacteristicsofindividualCPUs.Load
theX.M.P.orD.O.C.P.settingsintheBIOSforthehyperDIMMsupport.
 VisittheASUSwebsiteforthelatestQVL.