Intel D845HV manual Standby Current Requirements, Instantly Available Current Support, Description

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Desktop Board Features

CAUTION

If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the desktop board may lose register settings stored in memory.

Power supplies used with this board must be able to provide enough standby current to support the standard Instantly Available (ACPI S3 sleep state) configuration as outlined in Table 4. Values are determined by specifications such as PCI 2.2. Actual measurements may vary.

To estimate the total amount of standby current required for a particular system configuration, standby current requirements of all installed components must be added. Refer to the descriptions in and follow the steps outlined below:

1.Note the total D845HV or D845WN board standby current requirement.

2.Add to that the total PS/2 port standby current requirement if a wake-enabled device is connected.

3.Add, from the PCI 2.2 slots (wake-enabled) row, the total of the number of wake-enabled devices installed (PCI and AGP) multiplied by the standby current requirement.

4.Add, from the PCI 2.2 slots (nonwake-enabled) row, the total of the number of nonwake-enabled devices installed (PCI and AGP) multiplied by the standby current requirement.

5.Add all additional wake-enabled devices’ and nonwake-enabled devices’ standby current requirements as applicable.

6.Add all the required current totals from steps 1 through 5 to determine the total estimated standby current power supply requirement.

Table 4. Standby Current Requirements

Instantly Available Current Support

Estimate for integrated board components

Estimate for add-on components (Add to integrated board components shown above)

Description

Total for the D845HV/D845WN board

PS/2 ports**

PCI 2.2 slots (wake-enabled)

PCI 2.2 slots (nonwake-enabled)

CNR** (wake enabled)

CNR** (non-wake enabled)

USB ports**

Standby Current Requirements (mA)

770*

345

375

100

875

40

700

*Refer to the Intel Desktop Board D845HV/D845WN Technical Product Specification for the exact standby current requirements

**Dependent upon system configuration

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Contents Intel Desktop Boards D845HV and D845WN Product Guide Canadian Department of Communications Compliance Statement Revision HistoryRevision Revision History FCC Declaration of Conformity DateContents Intel Desktop Boards D845HV and D845WN Product Guide Updating the BiosTechnical Reference ContentsTables Feature Summary Desktop Board FeaturesDesktop Board Features Management Features Instantly Available PC Other Features Power ManagementExpansion Capabilities D845HV Board Components ComponentsD845WN Board Components Type Designation System Bus Frequency ProcessorMain Memory Processors Supported by the Desktop BoardIntel 82845 Memory Controller Hub MCH Intel 845 ChipsetFirmware Hub FWH Input/Output I/O ControllerReal-Time Clock Intel 82801BA I/O Controller Hub ICH2PCI Enhanced IDE Interface USB SupportExpansion Slots Communication and Networking Riser CNR Optional PCI Auto ConfigurationAudio Subsystem Accelerated Graphics Port AGPLAN Subsystem Software IDE Auto ConfigurationSecurity Passwords LAN Subsystem OptionalRJ-45 LAN Connector LEDs BatteryPower Management Features RJ-45 LAN Connector LEDsInstantly Available Technology Resume on RingStandby Current Requirements mA Standby Current RequirementsInstantly Available Current Support DescriptionIntel Desktop Boards D845HV and D845WN Product Guide Before You Begin Installing and Replacing Desktop Board ComponentsInstalling the I/O Shield Installing the I/O ShieldInstalling and Replacing Desktop Board Components Installing and Removing the Desktop BoardD845WN Board Mounting Holes Processor Fan Heatsink RM Mounting Holes Installing and Removing a ProcessorInstalling the Processor Fan Heatsink RM Base to the Board Installing the Processor Fan Heatsink Installing a ProcessorRemoving a Processor Connecting the Processor Fan Heatsink CableDimm Installation Guidelines Installing and Removing MemoryInstalling DIMMs Installing a Memory Module Removing DIMMs AGP Card with Retention Notch Installing the AGP Card Retention MechanismPosition the RM over the AGP connector as shown below Removing the AGP Card from the Retention Mechanism Installing an AGP CardRemoving the AGP Card Retention Mechanism Removing the AGP Card Retention MechanismConnecting the IDE Cable Connecting the IDE CableJumper Setting Setting the Bios Configuration Jumper BlockJumper Settings for the Bios Setup Program Modes J9G1 Function / ModeClearing Passwords Precaution Replacing the BatteryVorsicht Removing the Battery Intel Desktop Boards D845HV and D845WN Product Guide Updating the Bios with the Intel Express Bios Update Utility Updating the BiosUpdating the Bios Obtaining the Bios Update FileUpdating the Bios Recovering the BiosIntel Desktop Boards D845HV and D845WN Product Guide Bios Setup Program Menu Bar Using the Setup ProgramBios Setup Program Function Keys Maintenance MenuMaintenance Menu UC default Extended Configuration SubmenuExtended Configuration Submenu Using the Setup ProgramMain Menu FeatureEnglish default Disabled defaultAdvanced Menu Advanced MenuPCI Configuration Submenu PCI Configuration SubmenuOptions Auto default On default Description Boot Configuration SubmenuBoot Configuration Submenu Options No defaultPeripheral Configuration Submenu Peripheral Configuration SubmenuEnabled default Bi-directional defaultDefault IRQ 7 default DefaultIDE Configuration Submenu IDE Configuration SubmenuBoth default Disabled default Primary/Secondary IDE Master/Slave Submenus Sectors default Auto default DescriptionPrimary/Secondary IDE Master/Slave Submenus 44/1.25 MB 3½ default Diskette Configuration SubmenuDiskette Configuration Submenu Options Disabled defaultEvent Log Configuration Submenu Event Log Configuration SubmenuEnabled default Yes default Description Video Configuration Submenu Video Configuration SubmenuOptions AGP default Security Menu If no password entered previously FeatureFull default Security MenuAcpi Submenu Power MenuPower Menu Acpi SubmenuBoot Menu Boot MenuEnabled default Disabled default Description Boot Device Priority SubmenuBoot Device Priority Submenu OptionsRemovable Devices Submenu Hard Disk Drives SubmenuRemovable Devices Submenu Hard Disk Drives SubmenuExit Menu Exit MenuAtapi CD-ROM Drives Atapi CD-ROM Drives SubmenuTechnical Reference Board ConnectorsDescription Color Back Panel ConnectorsTechnical Reference Midboard ConnectorsPower and Hardware Connectors Add-In Card and Peripheral Interface Connectors D845WN Board Add-in Card and Peripheral Interface Connectors Front Panel Connectors Front Panel ConnectorsSystem Memory Map Desktop Board ResourcesMemory Map DMA ChannelsTechnical Reference Description MapO Map Address hexICH2 Acpi + TCO Interrupts InterruptsIntel Desktop Boards D845HV and D845WN Product Guide Number of Beeps Description Error Messages and IndicatorsBios Beep Codes Beep CodesExplanation Bios Error MessagesBios Error Messages Error MessageError Messages and Indicators Intel Desktop Boards D845HV and D845WN Product Guide EMC Regulations Safety RegulationsSafety Regulations Regulatory ComplianceProduct Certification Markings Installation Instructions Installation PrecautionsRegulatory Compliance Ensure Electromagnetic Compatibility EMC Compliance Prevent Power Supply OverloadChassis and Component Certifications Use Only for Intended Applications Place Battery Marking
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D845HV, D845WN specifications

The Intel D845WN and D845HV motherboards have garnered attention for their robust features and reliability, making them suitable choices for a range of computing needs. Both motherboards belong to Intel’s 845 chipset family, which was designed to support the Pentium 4 processors, providing a foundation for both performance and value.

The Intel D845WN motherboard is recognized for its standard ATX form factor, which allows for versatility in case selection and expands the options for build configurations. It supports the Pentium 4 processors with a socket 478 interface, accommodating speeds of 1.3 GHz to 3.0 GHz. This motherboard is equipped with a front-side bus (FSB) speed of 400/533 MHz, ensuring fast data transfer rates between the processor and other components.

On the memory side, the D845WN supports up to 2 GB of DDR SDRAM, making it compatible with a range of memory options for efficient multitasking and improved performance. It features two memory slots for Dual Channel DDR support, enhancing memory bandwidth. The onboard graphics capabilities are powered by Intel's integrated graphics, making the D845WN capable of basic graphical tasks without requiring a dedicated graphics card, ideal for general computing or light gaming.

In contrast, the D845HV model shares many similarities with the D845WN but emphasizes additional features that cater to more advanced users. It includes support for Intel's RAID technology, allowing users to set up mirrored or striped disk configurations for improved data redundancy and performance. Furthermore, the D845HV motherboard comes with more extensive expansion slots, including additional PCI and an AGP slot for dedicated graphics cards, enhancing its overall upgradeability.

Both motherboards include integrated audio capabilities courtesy of Intel’s AC'97 Audio technology, ensuring satisfactory sound output for everyday multimedia use. Networking is facilitated through integrated Ethernet support, enabling reliable internet connectivity without needing additional network cards.

In terms of expansion and connectivity, both models feature USB ports, allowing users to connect multiple peripherals effortlessly. The combination of legacy and contemporary interfaces on the D845WN and D845HV ensures compatibility with a wide range of devices and peripherals.

In summary, the Intel D845WN and D845HV motherboards epitomize value-driven performance, offering essential features that cater to a variety of users, from casual computer users to more demanding applications. With their solid build quality and Intel's backing, these motherboards continue to be appreciated even in today's evolving computing landscape.