Dell 320 manual DDR2 Memory Overview

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Memory

Dell™ OptiPlex™ 320 User's Guide

DDR2 Memory Overview

Addressing Memory With 4-GB Configurations (32-bit Operating Systems Only)

Removing Memory

Installing Memory

For information on the type of memory supported by your computer, see the "Memory" section of the specifications for your computer:

•Mini Tower Computer Specifications

•Desktop Computer Specifications

NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at support.dell.com.

DDR2 Memory Overview

NOTICE: Do not install ECC memory modules. Doing so may cause the system not to boot or affect performance.

If the DDR2 memory modules are not installed with the same amount of memory in each channel, the computer will continue to operate, but with a slight reduction in performance. See the label in the corner of the module to determine the module's capacity.

NOTE: Always install DDR2 memory modules in the order indicated on the system board.

Be sure to install a single memory module in DIMM1, the connector closer to the processor, before you install a module in the other connector.

The recommended memory configurations are:

•A pair of matched memory modules installed in connectors DIMM1 and DIMM2

or

•A memory module installed in connector DIMM1

Addressing Memory With 4-GB Configurations (32-bit Operating Systems Only)

This computer supports a maximum of 4 GB of memory when you use two 2-GB DIMMs. Current 32-bit operating systems, such as Microsoft® Windows® XP, can use a maximum of 4 GB of address space; however, the amount of memory available to the operating system is less than that installed. Certain components within the computer require address space in the 4-GB range. Any address space reserved for these components cannot be used by computer memory.

NOTE: If you use a 64-bit operating system, the entire memory range is available to the operating system.

The following components require memory address space:

•System ROM

•APICs

•Integrated PCI devices, such as network connectors

•PCI cards

•Graphics cards

•PCI Express cards (if applicable)

At start-up, the BIOS identifies the components that require address space. The BIOS dynamically calculates the amount of reserved address space required. The BIOS then subtracts the reserved address space from 4 GB to determine the amount of usable space.

•If the total installed computer memory is less than the usable space, all installed computer memory is only available for use by the operating system.

•If the total installed computer memory is equal to or greater than the usable address space, a portion of installed memory is not available for use by

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Contents Dell OptiPlex 320 Users Guide Advanced Features LegacySelect Technology ControlManageability SecurityPassword Protection System PasswordOption Settings Assigning a System PasswordAdministrator Password Deleting or Changing an Existing System PasswordAssigning an Administrator Password System Setup Disabling a Forgotten Password and Setting a New PasswordEntering System Setup System Setup ScreensSystem Setup Options SystemPS/2 Boot Sequence UnlockedBooting to a USB Device Changing Boot Sequence for the Current BootChanging Boot Sequence for Future Boots Memory KeyClearing Forgotten Passwords Jumper Setting DescriptionFloppy Drive Clearing Cmos Settings Power ManagementHyper-Threading Click Hardware and click Device ManagerSleep Mode Wake-Up Methods Windows XP Battery Back to Contents Before You Begin Recommended ToolsTurning Off Your Computer Before Working Inside Your ComputerPage Cleaning Your Computer Computer, Keyboard, and MonitorMouse CDs and DVDsBack to Contents Connecting Multiple Monitors Connecting Two to Three Monitors Using Surround ViewChanging the Display Settings Desktop Computer About Your Desktop ComputerFront View Back-Panel Connectors Back ViewInside Your Computer System Board Components Installing an Expansion Card PCI and PCI Express CardsRemoving an Expansion Card Back to Contents Processor Removing the ProcessorInstalling the Processor Back to Contents General Installation Guidelines Connecting Drive CablesDrive Interface Connectors IDE Drive Connector Serial ATA ConnectorPower Cable Connectors Connecting and Disconnecting Drive CablesCD/DVD Drive IDE Drive AddressingInstalling a CD/DVD Drive Floppy Drive Removing a Floppy DriveInstalling a Floppy Drive Hard Drive Removing a Hard DriveInstalling a Hard Drive Back to Contents Panel Removing the I/O PanelReplacing the I/O Panel Power Supply Replacing the Power SupplyDC Power Connectors Pin Number Signal name AWG WirePin Number Signal Name 18-AWG Wire Pin Number Signal Name 22-AWG WireBack to Contents Removing the Computer Cover Desktop Computer Specifications Connectors DrivesKey Combinations Controls and LightsPower PhysicalEnvironmental FCC Notice U.S. Only FCC Class BFinding Information What Are You Looking For? Find It HereSupport.dell.com Dell Support Website support.dell.com Select Drivers & Downloads and click GoClick Start→ Help and Support See Drivers and Utilities CD also known as ResourceCD Online Services Getting HelpTechnical Assistance Ftp.dell.comProblems With Your Order AutoTech ServiceAutomated Order-Status Service Technical Support ServiceDiagnostics Checklist Before You CallContacting Dell Antigua and Barbuda Argentina Buenos AiresAruba Australia SydneyCanada North York Ontario011 Cayman IslandsDenmark Copenhagen DominicaDominican Republic EcuadorGrenada GuatemalaGuyana Hong KongJapan Kawasaki Korea SeoulLatin America Website support.euro.dell.com LuxembourgNetherlands Antilles Netherlands AmsterdamNew Zealand Website support.ap.dell.com Nicaragua005 Slovakia PragueWebsite support.euro.dell.com South Africa Johannesburg 09/091Website support.ap.dell.com Thailand Trinidad/TobagoTurks and Caicos Islands Customer Care BracknellVirgin Islands VenezuelaGlossary Device driver See driver Docking device See APRPage Page Module bay See media bay NIC See network adapterPage Video resolution See resolution Back to Contents Memory DDR2 Memory OverviewInstalling Memory Removing MemoryBack to Contents Mini Tower Computer Abbreviations and AcronymsMini Tower Computer About Your Mini Tower ComputerBack View Inside Your Computer System Board Components Back to Contents Installing a Expansion Card Installing a Expansion Card Removing an Expansion CardPage Removing an Expansion Card Back to Contents Processor Installing the Processor Page Back to Contents Data Cable Connectors IDE Data Cable Connector Sata Data Cable ConnectorIDE Drive Power Connector Sata Power Connector Hard Drive Hard drive Release tabs Adding a Second Hard Drive Page Drive-Panel Inserts Removing the Floppy Drive Installing the Floppy Drive CD/DVD Drive Removing a CD/DVD Drive Back to Contents Panel Power Supply Pspwrgood DC Power Connectors P3 and P5 DC Power Connectors P8 and P9 Removing the Computer Cover Mini Tower Computer Specifications Cards Full-height cards supported Power Microsoft Windows XP Features Transferring Information to a New ComputerUser Accounts and Fast User Switching Setting Up a Home and Office NetworkClick Checklist for creating a network Replacing the Computer Cover Desktop Computer Reinstalling Drivers and the Operating System What Is a Driver?Reinstalling Drivers and Utilities DriversUsing Microsoft Windows XP System Restore Creating a Restore PointUsing the Optional Drivers and Utilities CD Reinstalling Microsoft Windows XP Undoing the Last System RestoreEnabling System Restore Restoring the Computer to an Earlier Operating StateReinstalling Windows XP Booting From the Operating System CDWindows XP Setup Next Solving Problems Battery ProblemsDrive Problems CD and DVD drive problemsKeyboard Problems Lockups and Software ProblemsHard drive problems Problems writing to a CD/DVD-RW driveOther software problems Computer does not start upComputer stops responding Program stops respondingMemory Problems Mouse ProblemsNetwork Problems Power ProblemsPrinter Problems Restoring Default SettingsSerial or Parallel Device Problems Sound and Speaker ProblemsNo sound from speakers Video and Monitor Problems No sound from headphonesIf the screen is blank Check the diagnostic lights See Diagnostic Lights If the screen is difficult to readSystem Board Removing the System BoardReplacing the System Board System Board ScrewsBack to Contents Models Dcsm and Dcne September 2006 P/N JK524 Rev. A01 Troubleshooting Tools and Utilities Dell DiagnosticsWhen to Use the Dell Diagnostics Starting the Dell Diagnostics From Your Hard DriveDell Diagnostics Main Menu Power Light Problem Description Suggested ResolutionSystem Lights Option FunctionDiagnostic Lights Light Pattern Problem Description Suggested ResolutionBeep Codes Code CauseError Messages Click the Change or Remove Program iconOperating system not found Read fault Requested sector not found Reset failed Click Performance and Maintenance and click System Resolving Software and Hardware IncompatibilitiesMicrosoft Windows XP Warranty
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