User's Manual

1-8
Chapter 1: Product introduction
1.4.2 Memorycongurations
Youmayinstall1GB,2GB,4GB,and8GBunbufferednon-ECCDDR3DIMMsintothe
DIMMsockets.Youcanrefertotherecommendedmemorypopulationbelow.
Combination
Recommended
DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2
1 SS
2 SS
3 SS SS
4 DS
5 DS
6 DS DS
7 DS DS DS DS
SS:Single-sidedmemory DS:Double-sidedmemory
• 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Intel
®
chipsetlimitation,DDR31600MHzandhighermemorymodulesonXMP
modewillrunatthemaximumtransferrateofDDR31600MHz.
• 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.
• 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:
- Useamaximumof3GBsystemmemoryifyouareusinga32-bitWindows
®
OS.
 - Installa64-bitWindows
®
OSifyouwanttoinstall4GBormoreonthe
motherboard.
 - Formoredetails,refertotheMicrosoft
®
support site at http://support.microsoft.
com/kb/929605/en-us.
• ThismotherboarddoesnotsupportDIMMsmadeupof512Mb(64MB)chipsorless.