HP dc5850 Memory Loading/Upgrading, Memory Mapping and Pre-allocation, Memory Socket Loading

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Processor/Memory Subsystem

3.3.1 Memory Loading/Upgrading

Table 3-2 shows suggested memory configurations for these systems.

CAUTION: Always power down the system and disconnect the power cord from the AC outlet before adding or replacing memory modules. Changing memory modules while the unit is plugged into an active AC outlet could result in equipment damage.

Table 3-2 does not list all possible configurations.

Table 3-2.

Memory Socket Loading

 

 

 

 

Channel A

Channel B

 

 

Socket

Socket

Socket

Socket

 

 

XMM 1

XMM 3

XMM 2

XMM 4

 

Total

 

 

 

 

 

none

none

none

512 MB

512 MB (single channel loading)

none

512 MB

none

512 MB

1

GB (dual-channel loading)

none

none

none

1 GB

1

GB (single chanel loading)

none

1 GB

none

1 GB

2

GB (dual-channel loading)

1 GB

1 GB

1 GB

1 GB

4

GB (dual-channel loading)

none

2 GB

none

2 GB

4

GB (dual-channel loading)

2 GB

2 GB

2 GB

2 GB

8

GB (dual-channel loading)

If only one DIMM is installed, it MUST be installed in socket 4.

HP recommends using dual-channel loading (symmetrical, same-capacity, same-speed modules across both channels) to achieve the best performance. The system automatically selects single- or dual-channel operation depending on how DIMMs are installed. For dual-channel operation, the loading priority is to populate socket XMM4 before XMM2 for channel B, and socket XMM3 before XMM1 for channel A.

Memory amounts over 3 GB may not be fully accessible with 32-bit operating systems due to system resource requirements. Addressing memory above 4 GB requires a 64-bit operating system.

3.3.2Memory Mapping and Pre-allocation

Figure 3-2 shows the system memory map. The RS780C North Bridge pre-allocates a portion of system memory for video use (refer to chapter 6). Pre-allocated memory is not available to the operating system. The amount of system memory reported by the OS will be the total amount installed less the pre-allocated amount.

 

3-4

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Technical Reference Guide

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Contents Technical Reference Guide OctoberTechnical Reference Guide Contents System Support Input/Output InterfacesPower and Signal Distribution Integrated Graphics SubsystemSystem Bios Error Messages and Codes IndexIntroduction About this GuideAdditional Information Sources Online ViewingSerial Number Notational ConventionsSpecial Notices ValuesAcronym or Abbreviation Description Common Acronyms and AbbreviationsAcronyms and Abbreviations CDS Eisa LAN PAL Sdvo URL Introduction System Overview IntroductionFeatures Feature Difference Matrix by Form Factor SFFSystem Architecture HP Compaq dc5850 Business PC Architecture, Block diagram AMD Processor Support ChipsetChipset Components and Functionality Components FunctionSupport Components System MemorySupport Component Functions Component Name FunctionMass Storage Serial InterfaceUniversal Serial Bus Interface Network Interface ControllerIntegrated Graphics Processor Audio SubsystemIntegrated Graphics Subsystem Statistics Integrated Graphics ControllerSpecifications Environmental Specifications Factory ConfigurationPower Supply Electrical Specifications Parameter Operating Non-operatingPhysical Specifications Parameter SFFSystem Overview Processor/Memory Subsystem Processor/Memory Subsystem ArchitectureAMD Processors AMD Processor OverviewProcessor Changing/Upgrading Supported Processors partial listingMemory Subsystem Memory Loading/Upgrading Memory Mapping and Pre-allocationMemory Socket Loading Channel a Channel B SocketSystem Memory Map for maximum of 8 gigabytes Processor/Memory Subsystem PCI 2.3 Bus Operation System SupportPCI Bus Overview Device REQ/GNT Line PCI Connector Slot PCI Express Bus OperationSoftware/Driver Layer Transaction Protocol LayerPCI Power Management Support Option ROM MappingPCI Interrupts Link LayerPCI 2.3 Bus Connector Pinout PCI ConnectorsPCI 2.3 Connector PCI Express Connectors PCI Express Bus Connector PinoutApic Mode System ResourcesInterrupts ModeDirect Memory Access Connector PCI slot 1 J20PCI Interrupt Distribution System Interrupts System BoardReal-Time Clock and Configuration Memory Clearing CmosConfiguration Memory Cmos Map System ManagementStandard Cmos Locations Security FunctionsInterface Security Power-On / Setup PasswordCable Lock Provision Acpi Wake-Up Event System Wakes From Power ManagementAcpi Wake-Up Events System Status PowerLED Beeps Action Required System StatusThermal Sensing and Cooling System Operational Status LED IndicationsRegister Map and Miscellaneous Functions System I/O MapSystem I/O Map Port FunctionSIO Controller Functions Gpio FunctionsSB700 Functions System Support Input/Output Interfaces Sata Connector Pin Sata Connector PinoutSata Interfaces AHCI/RAID SupportRAID 1-Mirroring with Two Hard Drives Factory Configuration for RAIDImplementing Ahci RAID for Non-Factory Configurations Diskette Drive Interface Pin Diskette Drive Connector Pinout Pin Signal DescriptionDB-9 Serial Connector Pinout Serial InterfaceStandard Parallel Port Mode Enhanced Parallel Port ModeExtended Capabilities Port Mode Parallel Interface SupportPin Signal Function Parallel Interface ConnectorDB-25 Parallel Connector Pinout Keyboard/Pointing Device Interface Keyboard Interface OperationPointing Device Interface Operation Keyboard/Pointing Device Interface ConnectorKeyboard/Pointing Device Connector Pinout USB Connector USB Connector PinoutSB700 signals USB Connector Location Universal Serial Bus InterfaceSignal Insulation color USB Cable DataUSB Cable Length Data USB Color CodeAudio Subsystem Functional Block Diagram Audio SubsystemAudio Multistreaming HD Audio ControllerHD Audio Link Bus Parameter Measurement Audio SpecificationsHD Audio Subsystem Specifications Network Interface Controller LAN I/F NICAlert Standard Format Support Power Management SupportWake-On-LAN Support NIC Connector NIC SpecificationsNIC Specifications Parameter Compatibility standard orprotocolIntegrated Graphics Processor Integrated Graphics Processor, Block diagram Functional DescriptionUpgrading DB-15 Monitor Connector Pinout Monitor ConnectorsAnalog Monitor Connector Pin Signal DVI-D ConnectorDVI-D Monitor Connector Pinout Integrated Graphics Processor Power and Signal Distribution Power DistributionMin Range Current Max Surge Tolerance Loading Ripple SFF Power SupplySFF 240-Watt Power Supply Unit Specifications Range or Min Current Max Surge Tolerance Loading Ripple MT Power SupplyMT 300-Watt Power Supply Unit Specifications Power Control Power ButtonPower Button Actions Pressed Power Button ResultsPower LED Indications Condition Wake Up Events Wake-On-LANSystem Power States Power Transition OS RestartState System Condition Consumption To S0 by RequiredDesignator Component function Signal DistributionSystem Board Component Designations Shows pinouts of headers used on the sytem boards Power and Signal Distribution System Bios Changeable Splash Screen ROM FlashingUpgrading Boot Functions Boot Device OrderNetwork Boot F12 Support Memory Detection and ConfigurationVisual power LED Audible speaker Meaning Boot Error CodesBoot Error Codes Client Management Functions INT15 Function ModeClient Management Functions Temperature Status System ID and ROM TypeSystem ID Numbers System System ID Form Factor Subsystem Device IDSmbios Functions Type DataUSB Legacy Support Management FunctionsError Messages and Codes Beep/Power LED CodesTable A-1 Beep/Power LED Codes Beeps Power LED Probable CausePower-On Self Test Post Messages Table A-2 Error Messages and Codes System Error Messages Table A-3 System Error Messages Probable CauseMemory Error Messages Memory Error MessagesTable A-4 Message Probable CauseKeyboard Error Messages Table A-5 Keyboard Error Messages Probable CausePrinter Error Messages Video Graphics Error MessagesTable A-6 Printer Error Messages Probable Cause Table A-7 Video Graphics Error Messages Probable CauseDiskette Drive Error Messages Table A-8 Diskette Drive Error Messages Probable CauseSerial Interface Error Messages Table A-9 Serial Interface Error Messages Probable CauseModem Communications Error Messages Table A-11 System Status Error MessagesSystem Status Error Messages Hard Drive Error Messages Table A-12 Hard Drive Error Messages Probable CauseXx = 03, Hard drive read/write compare test Table A-13 Hard Drive Error Messages Probable Cause Table A-15 Audio Error Messages Probable Cause Audio Error MessagesTable A-14 Video Graphics Error Messages Probable Cause 17 DVD/CD-ROM Error Messages Network Interface Error MessagesDVD/CD-ROM Error Messages Table A-17 Network Interface Error Messages Probable CauseScsi Interface Error Messages 65xx-xx, 66xx-xx Table A-18 Scsi Interface Error MessagesPointing Device Interface Error Messages 8601-xx Error Messages and Codes Index NumericsIndex
Related manuals
Manual 4 pages 1.09 Kb Manual 19 pages 40.13 Kb Manual 69 pages 369 b

dc5850 specifications

The HP dc5850 is a desktop computer that was designed for business environments, offering a blend of performance, reliability, and efficiency. Released during the height of the mid-2000s, this system is powered by AMD processors, particularly the Athlon or Phenom series, which ensures that it can handle various computational tasks with ease.

The dc5850 features a compact chassis that adheres to the Microtower form factor. This design not only saves space but also allows for easier upgrades and maintenance. The unit typically supports a range of RAM configurations, with options for up to 8GB of DDR2 memory. This flexibility enables the user to tailor the system's performance according to their needs, whether for basic office tasks or more demanding applications.

Storage options on the HP dc5850 include a 3.5-inch HDD that can accommodate substantial data, with capacities typically ranging from 160GB to 1TB. The inclusion of a SATA interface ensures fast data transfer rates, which is essential for improving overall system performance. Moreover, the dc5850 boasts multiple USB ports, including USB 2.0 and sometimes even USB 3.0, facilitating easy connectivity with peripherals such as printers, scanners, and external drives.

Graphics capabilities on the dc5850 are generally provided by integrated solutions, although users have the option to add discrete graphics cards for enhanced performance in visual tasks. The system often comes with integrated audio, which supports basic multimedia needs without requiring additional sound cards.

In terms of connectivity, the HP dc5850 features built-in Ethernet for wired networking and may also offer options for Wi-Fi capabilities via PCI expansion slots. This makes it suitable for networked business environments, enabling seamless integration into office infrastructures.

The system is designed with energy efficiency in mind, complying with various environmental standards, thereby reducing its carbon footprint. This aspect may also lead to lower operational costs for businesses focused on sustainability.

Overall, the HP dc5850 stands out as a versatile desktop solution, catering to the essential needs of small to medium-sized businesses. With its combination of performance, expandability, and energy efficiency, it remains a noteworthy choice for users seeking reliable computing power in a compact and manageable form.