Asus H81M-CS User Manual

ASUS H81M-CS 1-7
1.4 System memory
1.4.1 Overview
ThismotherboardcomeswithtwoDoubleDataRate3(DDR3)DualInlineMemoryModule
(DIMM)sockets.ADDR3moduleisnotcheddifferentlyfromaDDRorDDR2module.DO
NOTinstallaDDRorDDR2memorymoduletotheDDR3slot.
Channel Sockets
ChannelA DIMM_A1
ChannelB DIMM_B1
H81M-CS
H81M-CS 240-pin DDR3 DIMM sockets
DIMM_A1 DIMM_B1
1.4.2 Memory congurations
Youmayinstall1GB,2GB,4GB,and8GBunbufferednon-ECCDDR3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Intel
®
chipsetlimitations,DDR31600MHzandhighermemorymoduleson
XMPmodewillrunatthemaximumtransferrateofDDR31600MHz.
 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3GB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megabits(Mb)chipsor
less.
 Memorymoduleswithmemoryfrequencyhigherthan2133MHzanditscorresponding
timingortheloadedX.M.P.ProleisnottheJEDECmemorystandard.Thestability
andcompatibilityofthesememorymodulesdependontheCPUscapabilitiesand
otherinstalleddevices.
 Themaximum16GBmemorycapacitycanbesupportedwith8GBoraboveDIMMs.
ASUSwillupdatethememoryQVLoncetheDIMMsareavailableinthemarket.
AccordingtoIntel
®
CPUspec,DIMMvoltagebelow1.65Visrecommendedtoprotectthe
CPU.

Asus H81M-CS Specifications

General

Form Factor	Micro ATX
Chipset	Intel H81
CPU Socket	LGA 1150
Memory Slots	2
Maximum Memory	16 GB
Memory Type	DDR3
PCIe x16 Slots	1
PCIe x1 Slots	2
USB 3.0 Ports	2
USB 2.0 Ports	8
Audio	Realtek ALC887
LAN	Realtek 8111G
Video Outputs	DVI, VGA