User’s Manual

1-10
Chapter 1: Product Introduction
1.4 System memory
Overview
ThismotherboardcomeswithfourDoubleDataRate4(DDR4)DualInlineMemoryModule
(DIMM)sockets.ThegureillustratesthelocationoftheDDR4DIMMsockets:
Channel Sockets
ChannelA DIMM_A1&DIMM_A2
ChannelB DIMM_B1&DIMM_B2
• 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.
• AlwaysinstallDIMMswiththesameCASlatency.Foroptimalcompatibility,we
recommendthatyouinstallmemorymodulesofthesameversionordatecode(D/C)
fromthesamevendor.Checkwiththeretailertogetthecorrectmemorymodules.
• AccordingtoIntel
®
CPUspec,DIMMvoltagebelow1.35Visrecommendedtoprotect
theCPU.
• DuetoIntel
®
chipsetlimitation,DDR42666MHzandhighermemorymoduleswillrun
atmax.2666MHzonIntel
®
8thGen.6-coreorhigherprocessors.
• 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).
• Refertowww.asus.comforthelatestMemoryQVL(QualiedVendorsList)