The Intel® Desktop Board D875PBZ supports the Intel® Pentium® 4 processor in the uPGA478-pin package. At the time of launch, the Desktop Board D875PBZ will support the Intel Pentium 4 processor with a System Bus of 800/533 MHz. For the latest supported speeds, please refer to the Processor Support Table.

The Desktop Board D875PBZ has five PCI connectors and one Universal 0.8/1.5 V AGP 3.0 connector supporting 1x, 4x, and 8x AGP cards. All PCI slots support bus-mastering devices.

The Desktop Board D875PBZ supports DDR400 and DDR 333 SDRAM Memory. There are two DIMM channels supporting up to four 184-pin DDR SDRAM Dual Inline Memory Modules (DIMMs). The Desktop Board D875PBZ is designed to support a memory range of 64 MB minimum (using 64 Mbit technology) up to 4.0 GB maximum** [See note below] (using 512 Mbit technology) that conforms to the latest Intel JEDEC specification Addendums. The Desktop Board D875PBZ supports ECC and non-ECC DIMMs.
NOTE: Please refer to the memory page for additional information.

No manual BIOS configuration is required. Intel® Performance Acceleration Technology (Intel® PAT) is enabled automatically.

The most extreme example of memory failure is when the system hangs while booting the operating system. This can happen when the system is unable to communicate properly with the memory. In less extreme cases, the memory may generate intermittent errors or fail during stress.

This beep code may indicate a problem during detection of the DDR SDRAM memory device. Check to ensure that system memory is properly installed and that the DIMMs are on the Desktop Board D875PBZ tested-memory list.

The Desktop Board D875PBZ requires a power supply that complies with the ATX/ATX12V Power Supply Design Guide Version 1.2. This design guide is available from http://www.formfactors.org
The ATX12V power supply required for the Desktop Board D875PBZ has the standard 20-pin ATX Main Power Connector, and a 4-pin +12V Aux. Power Connector. The 4-pin +12V power connector has been added to enable the delivery of more +12VDC current to the desktop board. This connector is used by the board to power the processor's voltage regulator module (VRM).
CAUTION: The system will not boot if there is a failure to use an ATX12V power supply, or by not connecting additional power supply leads to the D875PBZ board.

A special power supply is not needed to support “Instantly Available PC“. However, the power supply must provide enough standby current to support the needs of all wake-capable devices in the system. The more wake-capable devices in the system, the greater the standby current required from the power supply. Intel recommends starting with a power supply capable of providing a minimum of 1.5 Amps (2.0 Amps recommended) of +5V standby current. To be sure, total the amount of standby current required by the various components that can wake the system from the STR state. In your calculations, include the components on the Desktop Board D875PBZ and on the add-in cards. Make sure the power supply provides at least that amount of standby current. Refer to the Technical Product Specification for information on how much +5V standby current the on-board components of the Desktop Board D875PBZ require.

A single configuration jumper (J7J2) on the desktop board is used to access configuration mode. All configuration options are made available through the BIOS configuration screens. Refer to the Desktop Board D875PBZ Jumper Settings page online or in the D875PBZ Technical Product Specification (TPS).

With jumpers installed, the audio signals are routed to the back panel. When jumpers are removed and replaced with a front panel audio cable, audio signals are routed to the front panel audio solution. Refer to the Desktop Board D875PBZ Jumper Settings page online or in the D875PBZ Technical Product Specification (TPS).

The processor fan should be plugged into the fan header labeled “CPU FAN“ adjacent to the processor socket. Chassis fans may be plugged into the fan headers labeled “REAR FAN“, “FRONT FAN“ and “VREG FAN“. Refer to the Desktop Board D875PBZ Technical Product Specification for more information.

On-board features can be disabled through the Desktop Board D875PBZ BIOS Setup program. Refer to the Desktop Board D875PBZ Technical Product Specification.

The D875PBZ AGP socket is keyed for Universal 0.8 AGP cards that comply with the AGP 3.0 specification or 1.5 V AGP cards that comply with the AGP 2.0 specification.
The AGP connector supports 8x, 4x AGP 3.0 add-in cards operating at 0.8V, or 4x,1x AGP 2.0 add-in cards operating at 1.5V.
Note: There is no support for AGP 2x operation or legacy 3.3V AGP cards.

The Desktop Board D875PBZ offers an audio solution that uses a portion of the Intel® 82801ER I/O Controller Hub (ICH5-R) with an Analog Devices* AD1985 audio codec to create the audio subsystem. Refer to the Desktop Board D875PBZ Technical Product Specification (TPS) for more details.

The on-board audio can be disabled using the BIOS Setup program. Select the advanced menu, then the Peripheral Configuration screen. The menu offers options to enable or disable the audio if it is present on the desktop board. Refer to the Desktop Board D875PBZ Technical Product Specification (TPS) for more details.

Yes. All versions of the Desktop Board D875PBZ support Serial ATA RAID through the ICH5-R. Booting to RAID can be enabled through the desktop board BIOS Setup program. Refer to the Desktop Board D875PBZ Technical Product Specification (TPS) for more details.
Note: The ICH5-R provides support for RAID 0 & 1 under Windows XP and Windows 2000 only.

Yes. The Desktop Board D875PBZ supports Ultra ATA transfer rates up to 100 MB/sec (ATA/100) by way of the Intel® 82801ER I/O Controller Hub (ICH5-R) with two independent bus-mastering IDE interfaces. An Ultra ATA/100 supported hard drive and an 80 conductor IDE cable are required to take advantage of the increased bandwidth available on the IDE channel.
One of the features of the Intel Desktop Board D875PBZ is its ability to support larger ATA/100 capable hard drives with 48-bit Logical Block Addressing (LBA) within the BIOS along with all Ultra ATA transfer rates (i.e., 33 MB/sec, 66 MB/sec and 100 MB/sec). To realize a true throughput performance difference, a hard drive may need to implement higher spindle speeds, such as 7200 RPM, and a large onboard buffer size to take advantage of the increased bandwidth available on the IDE channel.

Each USB port is treated as an independent USB path, and the performance of each USB port is dependent upon the detected USB device(s) within that USB port (point-to-point) device connection. Its performance will be limited to the least capable performance element within that port's connection. For example, if you connect a USB 2.0 high-speed device to a USB 1.1 Hub, which is then connected to a USB port on the motherboard, the USB 2.0 high-speed device will be limited to the performance through that USB 1.1 Hub.
Refer to the device manufacturer of your USB device for specifications and installation requirements. Additional USB design specifications reference information can be found within the Intel Desktop Board D875PBZ Technical Product Specification (TPS).

Yes. The Desktop Board D875PBZ has a USB header that allows additional USB ports. Refer to the Front Panel USB Header Pin-out to ensure proper connection. Refer to the Desktop Board D875PBZ Technical Product Specification (TPS) for more details

The Desktop Board D875PBZ has specific requirements for the power sequencing and limits. A momentary switch should be used for the power on/off switch. The power supply chosen must have the additional 4-pin +12 volt connector and meet the ATX12V specification. If the power supply 2x2 connector is not plugged into the board connector located near the processor socket, the system will not boot.

Onboard LAN can be disabled through the desktop board BIOS Setup program. The setting is located in the Advanced screen. Refer to the D875PBZ Technical Product Specification (TPS) for more details.

Intel performs internal testing on all drivers before posting them on the Intel developer desktop board Web site. In many cases, it is not practical to test all drivers on all desktop boards. For this reason, application vendors may release drivers that have not been tested by Intel. These drivers may be available on the vendor public site, but not on the Intel public site. This does not mean the drivers do not work; it simply indicates that Intel has not validated the drivers.

The Desktop Board D875PBZ has one serial port connector, located on the back panel.

The Desktop Board D875PBZ offers several new features: support for Pentium 4 processors including the higher speed 800 MHz system bus, the Intel 875P chipset with ICH5-R, support for 8x AGP 3.0 compliant add-in cards, USB 2.0 with 4 UHCI Host Controllers that supports up to 8 USB 2.0 ports, optional audio that includes auto-sensing connectors, support for dual channel DDR 333/400, and support for gigabit LAN using CSA Bus. Refer to the Available Configurations table for more details.

The Desktop Board D875PBZ has five PCI slots, integrated audio (optional) with analog and digital output using AC '97 processing with the Intel® 82801ER I/O Controller Hub (ICH5-R) and Analog Devices AD1985 codec, and Instantly Available PC (Suspend-to-RAM). In addition, the Desktop Board D875PBZ also supports up to 8 USB 2.0 ports with six back panel connectors and two ports accessible via a front panel USB header. The Desktop Board D875PBZ allows use of an AGP 8x or 4x AGP 3.0 add-in card operating at 0.8V, or 4x, 1x AGP 2.0 add-in cards operating at 1.5V. The Desktop Board D875PBZ supports Ultra ATA/100 hard disk drives.

Intel® Active Monitor is a system monitoring tool that alerts you when any monitored sensors on your Intel motherboard have gone outside of their recommended range. If an alert occurs, Intel Active Monitor can provide you with several different alert notifications. The standard notification is the Intel Active Monitor icon in the system tray, which turns red and flashes in the event of an alert. Additionally, you can choose to receive audio alerts and pop-up window alert messages. Intel Active Monitor is bundled on some versions of the Desktop Board D875PBZ and is available for download. For further information about how Intel Active Monitor works, or to download the utility, please refer to: http://developer.intel.com/design/motherbd/active.htm

No. OEMs and system integrators are solely responsible for qualifying the memory they include in their systems. Intel performs only limited testing of selected memory modules to verify functionality of the desktop board's design. Intel offers a program in which an independent test labs test system memory and report passing results to Intel for inclusion on our Internet based tested memory list.

Instantly Available PC, also known as Suspend-to-RAM (STR), is a technology closely associated with the S3 state of the ACPI specification. STR allows a properly configured system to go into a low-power mode, saving open applications, active files and information about the system's configuration to main memory. In this low-power state, memory remains powered to retain the system information, while most other components turn off to conserve energy. Fans are turned off to provide silent operation so the system appears “off.“ The PC can be left in STR state and awakened periodically to perform such preprogrammed events as downloading e-mail or searching and filtering Web content. An incoming phone call can also wake the PC and trigger a desired response, similar to a telephone answering machine. When an incoming request arrives via a “wake device“ or the user wishes to resume operation, the PC comes alive within a few second by reconfiguring itself based on the information previously saved to memory. No boot is required.

A wake device is a mechanism that awakens the system from the STR state. Typically, this mechanism is a network card or a fax/modem that is compliant with the PCI 2.2 specification. When the system goes into the STR state, these wake devices receive standby current from the power supply. Although these devices are in a low-power state they have sufficient current to remain awake to recognize incoming activity, such as a network request or a phone call.

The AC'97 (Audio Codec 1997) specification defines a high-quality audio architecture that advances the migration to digital audio, while maintaining support for analog interconnects for backward compatibility.

The Desktop Board D875PBZ requires an ATX12V compliant power supply to function according to desktop specifications.