Gigabyte GA-EP45-UD3LR user manual Installing the Memory, Dual Channel Memory Configuration

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1-4 Installing the Memory

Read the following guidelines before you begin to install the memory:

Make sure that the motherboard supports the memory. It is recommended that memory of

the same capacity, brand, speed, and chips be used.

(Go to GIGABYTE's website for the latest memory support list.)

Always turn off the computer and unplug the power cord from the power outlet before installing the memory to prevent hardware damage.

Memory modules have a foolproof design. A memory module can be installed in only one direction. If you are unable to insert the memory, switch the direction.

1-4-1 Dual Channel Memory Configuration

This motherboard provides four DDR2 memory sockets and supports Dual Channel Technology. After the memory is installed, the BIOS will automatically detect the specifications and capacity of the memory. Enabling Dual Channel memory mode will double the original memory bandwidth.

The four DDR2 memory sockets are divided into two channels and each channel has two memory sockets as following:

Channel 0: DDR2_1, DDR2_2 Channel 1: DDR2_3, DDR2_4

Dual Channel Memory Configurations Table

 

DDR2_1

DDR2_2

DDR2_3

DDR2_4

Two Modules

DS/SS

- -

DS/SS

- -

 

 

 

 

 

 

- -

DS/SS

- -

DS/SS

Four Modules

DS/SS

DS/SS

DS/SS

DS/SS

 

 

 

 

 

(SS=Single-Sided, DS=Double-Sided, "- -"=No Memory)

DDR2 1 DDR2 2

DDR2 3 DDR2 4

Due to chipset limitation, read the following guidelines before installing the memory in Dual Channel mode. 1. Dual Channel mode cannot be enabled if only one DDR2 memory module is installed.

2. When enabling Dual Channel mode with two or four memory modules, it is recommended that memory of the same capacity, brand, speed, and chips be used and installed in the same colored DDR2 sockets for optimum performance.

When memory modules of different capacity and chips are installed, a message which says memory is operating in Flex Memory Mode will appear during the POST. Intel® Flex Memory Technology offers greater flexibility to upgrade by allowing different memory sizes to be populated and remain in Dual Channel mode/performance.

GA-EP45-UD3LR/UD3L Motherboard

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Contents GA-EP45-UD3LR/ GA-EP45-UD3L Motherboard Copyright DisclaimerDocumentation Classifications Identifying Your Motherboard RevisionTable of Contents Drivers Installation Box Contents GA-EP45-UD3LR/GA-EP45-UD3L Motherboard Layout Block Diagram Hardware Installation Installation PrecautionsProduct Specifications CPUPage Bios Installing the CPU and CPU Cooler Installing the CPUCPU Socket Lever Installing the CPU Cooler Installing the Memory Dual Channel Memory ConfigurationInstalling a Memory Installing an Expansion Card Back Panel Connectors Center/Subwoofer Speaker Out Jack Orange Rear Speaker Out Jack BlackSide Speaker Out Jack Gray Line In Jack BlueInternal Connectors SATA20/1/2/3/4/5GND FDD Floppy Disk Drive Connector 5 CPUFAN/SYSFAN1/SYSFAN2/PWRFAN Fan HeadersIDE IDE Connector SATA20/1/2/3/4/5 Sata 3Gb/s ConnectorsPwrled System Power LED Header Faudio Front Panel Audio Header PW Power Switch, Red Fpanel Front Panel HeaderCdin CD In Connector, Black Spdifi S/PDIF In Header, RedSpdifo S/PDIF Out Header FUSB1/FUSB2 USB Headers, YellowLPT Parallel Port Header Coma Serial Port Header, WhiteCI Chassis Intrusion Header Clrcmos Clearing Cmos JumperBAT Battery Bios Setup Logo Screen Default Post Screen Startup ScreenFunction Keys End Q-FLASHSample Bios Version GA-EP45-UD3L E19 Bios Setup Program Function KeysMain Menu Main Menu Help Standard Cmos Features  Advanced Bios Features Power Management Setup  PnP/PCI ConfigurationsMB Intelligent TweakerM.I.T SPDRobust Graphics Booster CPU Clock Ratio NoteFine CPU Clock Ratio Note CPU FrequencyCPU Host Frequency Mhz PCI Express Frequency MhzA.2 Advanced Clok ControlCPU Clock Drive PCI Express Clock DriveCPU Clock Skew MCH Clock SkewCommand RateCMD CAS Latency TimeTRCD TRPChannel A/B Timing Settings TRD Phase0 AdjustmentTRD Phase1 Adjustment TRD Phase2 AdjustmentChannel A/B Driving Settings DDR Write TrainingDriving Strength Profile Data Driving Pull-Up LevelLoad-Line Calibration CPU VcoreCPU Termination CPU ReferenceTime DateIDE Channel 0, 1 Master/Slave Floppy 3 Mode Support IDE Channel 2, 3 Master, IDE Channel 4 Master/SlaveDrive a Halt OnHard Disk Boot Priority First/Second/Third Boot DevicePassword Check HDD S.M.A.R.T. CapabilityCPU Multi-Threading Note Limit Cpuid Max. to 3 NoteNo-Execute Memory Protect Note CPU Enhanced Halt C1ENoteFull Screen Logo Show Delay For HDD SecsInit Display First Integrated Peripherals Smart LAN LAN Cable Diagnostic Function USB ControllerUSB 2.0 Controller USB Keyboard SupportOnboard LAN Boot ROM Parallel Port ModeOnboard IDE Controller JMicron 368 Chip Onboard Serial PortSoft-Off by PWR-BTTN Power On by RingPME Event Wake Up Resume by Alarm Hpet Mode NotePower On By Mouse Power On By KeyboardPCI1 IRQ Assignment PnP/PCI ConfigurationsPCI2 IRQ Assignment Reset Case Open Status Current System/CPU TemperatureCurrent CPU/SYSTEM/POWER FAN Speed RPM CPU Warning TemperatureCPU Smart FAN Mode CPU Smart FAN ControlLoad Fail-Safe Defaults Load Optimized DefaultsSupervisor Password User PasswordSave & Exit Setup Exit Without SavingDrivers Installation Installing Chipset DriversApplication Software Technical ManualsContact SystemDownload Center Before You Begin Xpress Recovery2System Requirements Installation and Configuration Installing Windows XP and Partitioning the Hard DrivePage Accessing Xpress Recovery2 Using the Backup Function in Xpress Recovery2Removing the Backup Using the Restore Function in Xpress Recovery2Exiting Xpress Recovery2 Bios Update Utilities Updating the Bios with the Q-Flash UtilityWhat is DualBIOSTM? What is Q-FlashTM?Updating the Bios Load Optimized DefaultsSaveY/N?& ExitY Setup Updating the Bios with the @BIOS Utility Using @BIOSAfter Updating the Bios Update the Bios Using the Internet Update FunctionEasyTune EasyTune 6 Interface Tabs InformationMeter Mode Button Information Table Dynamic Energy Saver Advanced Interface Meter ModeDynamic Energy Saver Advanced Total Mode Button Information Table Total ModeStealth Mode Share Directions for using Q-ShareOptions Descriptions Time Repair System RestorePreference Screen Configuring Sata Hard Drives Configuring the Onboard Sata ControllerTo configure Sata hard drives, follow the steps below Installing Sata hard drives in your computerConfiguring Sata controller mode in Bios Setup RAIDConfiguring a RAID array in RAID Bios Create RAID VolumeCreate Volume Menu ST3120026AS 3JT329JX 111.8GB Delete RAID Volume Delete Volume MenuRequired for Ahci and RAID Mode Making a Sata RAID/AHCI Driver DiskettePage Installing the Sata RAID/AHCI Driver and Operating System Installing Windows XPENTER=Select F3=Exit Enter= Continue R=Repair F3=Exit Installing Windows Vista Page Configuring Audio Input and Output Configuring 2/4/5.1/7.1-Channel AudioConfiguring Speakers High Definition Audio HD AudioActivating an AC97 Front Panel Audio Module Configuring Sound EffectMuting the Back Panel Audio For HD Audio Only Installing the S/PDIF In Cable Installing the S/PDIF In Cable OptionalPdif Pdif Out Configuring S/PDIF outConneting a S/PDIF out Cable Configuring Microphone Recording Select Realtek HD Audio Input in the Mixer device list Recording the Sound Using the Sound RecorderPlaying the Sound Troubleshooting Frequently Asked QuestionsTroubleshooting Procedure StartEND Weee Symbol Statement Regulatory StatementsRegulatory Notices Our Commitment to Preserving the EnvironmentChina Restriction of Hazardous Substances Table GA-EP45-UD3LR/UD3L Motherboard 104 105 Appendix GA-EP45-UD3LR/UD3L Motherboard 106 107 Appendix GA-EP45-UD3LR/UD3L Motherboard 108 109 Appendix GA-EP45-UD3LR/UD3L Motherboard 110 Contact Us  G.B.T. INC USA Mexico Gigabyte Global Service System