Gigabyte GA-K8U-939 user manual Dual Channel Memory Configuration

Page 14

English

Dual Channel Memory Configuration

The GA-K8U-939 supports the Dual Channel Technology. When the Dual Channel Technology is activated, the bandwidth of memory bus will be double the original one.

Due to CPU limitation, if you want to operate the Dual Channel Technology, please follow the guidelines below for Dual Channel memory configuration.

1.Dual Channel mode will not be enabled if only one DDR memory module is installed.

2.To enable Dual Channel mode with 2 memory modules (it is recommended to use memory modules of identical brand, size, chips, and speed), you must install them into DIMM sockets of the same color.

3.To enable Dual Channel mode with 4 memory modules, it is recommended to use memory modules of identical brand, size, chips, and speed.

The following is a Dual Channel Memory configuration table: (DS: Double Side, SS: Single Side)

 

DDR 1

DDR 2

DDR 3

DDR 4

2 memory modules

DS/SS

DS/SS

X

X

 

X

X

DS/SS

DS/SS

4 memory modules

DS/SS

DS/SS

DS/SS

DS/SS

 

 

 

 

 

If two memory modules are to be used to achieve Dual Channel mode, we recommend installing them in DDR1 and DDR2 DIMM sockets.

All of the memory configurations below will cause system unable to boot. (DS: Double Side, SS: Single Side)

 

DDR1

DDR2

DDR3

DDR4

1 memory module

X

DS/SS

X

X

 

X

X

X

DS/SS

2 memory modules

X

DS/SS

DS/SS

X

 

DS/SS

X

X

DS/SS

 

X

DS/SS

X

DS/SS

3 memory modules

DS/SS

DS/SS

DS/SS

X

 

X

DS/SS

DS/SS

DS/SS

 

DS/SS

X

DS/SS

DS/SS

 

DS/SS

DS/SS

X

DS/SS

GA-K8U-939 Motherboard

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Contents GA-K8U-939 Motherboard Copyright Product Manual ClassificationTable of Contents Drivers Installation GA-K8U-939 Motherboard Layout 939Block Diagram Page Instances of Non-Warranty Considerations Prior to InstallationInstallation Notices Preparing Your ComputerFeature Summary CPUInstallation of the CPU and Heatsink Installation of the CPUInstallation of the Heatsink Installation of Memory Dual Channel Memory Configuration Installation of Expansion Cards I/O Back Panel Introduction Connectors Introduction ATX12V / ATX Power Connector 5 Cpufan / Sysfan / Pwrfan Cooler Fan Power Connector FDD FDD ConnectorIDE1 / IDE2 IDE Connector SATA0 / SATA1 Serial ATA ConnectorBAT Battery PwrledFpanel Front Panel Jumper Faudio Front Audio Panel Connector Cdin CD In ConnectorSurcen Surround Center Connector Spdifio Spdif In / Out ConnectorUSB1 / FUSB2 Front USB Connector 17 IRGame Game Connector Clrcmos Clear CmosEnglish English Status Page Setup Menu / Option Page Setup Menu Main MenuMain Menu For example GA-K8U-939 / Bios Ver. F1 „ Set User Password „ Load Optimized Defaults„ Set Supervisor Password „ Save & Exit SetupStandard Cmos Features TimeHalt on Floppy 3 Mode Support for Japan AreaDrive a / Drive B MemoryFirst / Second / Third Boot Device Advanced Bios FeaturesHard Disk Boot Priority Password CheckOnChip Audio OnChip Sata ModeIntegrated Peripherals OnChip SataOn-Chip Primary IDE IDE DMA transfer accessOnBoard LAN Boot ROM On-Chip Secondary IDEParallel Port Mode Uart Mode SelectUR2 Duplex Mode Onboard Parallel portModem Ring Resume Power Management SetupPME Event Wake Up Resume by Alarm Power on FunctionPnP/PCI Configurations PCI 1 IRQ AssignmentCurrent VoltageV Vcore / DDR25V / +3.3V / +12V Current CPU/System TemperaturePC Health Status Current CPU/SYSTEM FAN Speed RPMFrequency/Voltage Control Load Fail-Safe Defaults Load Optimized DefaultsSet Supervisor/User Password Save & Exit Setup Exit Without SavingEnglish Drivers Installation Install Chipset DriversSoftware Application Software InformationHardware Information Contact UsEnglish User Interface Overview Unique Software UtilitiesEasyTune 5 Introduction How to use the Xpress Recovery Xpress Recovery IntroductionWhat is Xpress Recovery ? F9 For Xpress Recovery Remove Backup Image  Remove backup image. Are you sure? Y/N Exit and RestartBefore You Begin Flash Bios Method IntroductionMethod 1 Q-FlashTMUtility Entering the Q-FlashTMutility Exploring the Q-FlashTM / Dual Bios utility screenTask menu for Dual Bios utility Task menu for Q-Flash utilityUsing the Q-FlashTMutility StepsYou can repeat to Press Y on your keyboard to save and exit Exploring the Q-FlashTMutility screen Congratulation!! You have updated Bios successfully Bios file becomes F4 after updatingMethod 2 @BIOSTM Utility Methods and stepsEnglish Serial ATA Bios Setting Utility Introduction RAID LevelsConfiguring the ALi RAID Bios Entering the RAID Bios SetupCreate RAID 0 Striping for Performance Main MenuEnglish Create RAID 1 Mirroring for Reliability Create Jbod for integrated Capacity Rebuild RAID Array Delete RAID Settings & PartitionDelete All RAID Settings & Partition Installing the RAID drivers Stereo Speakers Connection and Settings 5 2- / 4- / 6- / 8- Channel Audio Function IntroductionChannel Audio Setup English English English Spdif Output Device Optional Device Auto-detecting Introduction of audio connectorsJack-Sensing and UAJ Introduction UAJ Introduction Manual settingEnable UAJ function Troubleshooting English English English English English English Contact Us Taiwan HeadquartersChina Shanghai