|Intel® Desktop Board D845GRG|
|Frequently asked questions|
Technical Questions General Questions:
Instantly Available PC and Power Supplies:
Jumpers/BIOS Setup Options:
Marketing QuestionsGeneral Questions:
- What processor does the Intel® Desktop Board D845GRG support?
The Intel® Desktop Board D845GRG supports the Intel® Pentium® 4 processor and the Intel® Celeron® processor in the uPGA478-pin package. At the time of launch, the Desktop Board D845GRG will support the Intel Pentium 4 processor with a System Bus of 400/533 MHz. The Desktop Board D845GRG will also support the Intel Celeron processor with a 400 MHz System Bus. For the latest supported speeds, please refer to the Processor Support Table.
- How do I find technical information on the Intel® Desktop Board D845GRG?
Intel has changed the way in which it is communicating technical information on Intel Desktop Boards. The Technical Product Specification information is now divided into three parts. The first part is the specification that applies to all like desktop boards based on a desktop board's chipset family. The second part is the Product Supplement Document that contains product specific information. The third part is the Desktop Board Specification Update. All three documents comprise the Intel® Desktop Board D845GRG technical product specification.
Refer to the Technical Product Specification for Intel® Desktop Boards using the Intel® 845G Chipset and the Product Supplement Document for the Intel® Desktop Board D845GRG, or the Desktop Board Specification Update, all of which are available on the Desktop Board D845GRG Technical Documentation page.
- How do I install and secure a processor on the Desktop Board D845GRG?
The processor connects to the Desktop Board D845GRG through the uPGA478-pin package socket connector. Make sure you use an adequate heatsink solution such as that provided with the Boxed Intel® Pentium® 4 processor or the Intel Celeron processor.
- How many expansion slots does the Desktop Board D845GRG contain?
The Desktop Board D845GRG has three dedicated PCI connectors and one 1.5V only AGP 4x port connector. PCI slot 3 is shared with a Communications Network Riser on the CNR skus. All PCI slots support bus-mastering devices.
- Does the Desktop Board D845GRG support STR (Suspend-to-RAM)?
The Desktop Board D845GRG supports STR when used with STR capable: Operating system, add-in card(s), driver(s), and application(s). Operating systems, add-in cards, drivers, and applications that do not support STR can cause problems when coming out of different sleep states.
- Why is my USB device not operating to its specification?
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 ports 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 that connected USB 2.0 high speed device, will be limited to the performance through that USB 1.1 Hub.
Refer to the device manufacture of your USB device for specifications and installation requirements.
- Why doesn't my system resume from standby under Microsoft* Windows* 2000?
If you are using video driver version 6.13.01.3069 or later you will need to upgrade your system BIOS to version P03 or later for system standby to work correctly.
Instantly Available PC and Power Supplies:
- What memory configurations are supported on the Desktop Board D845GRG?
The Desktop Board D845GRG supports DDR 200 and DDR 266 SDRAM Memory. There are two DIMM sockets supporting up to two 184-pin DDR SDRAM Dual Inline Memory Modules (DIMMs) with gold-plated contacts. The Desktop Board D845GRG is designed to support a memory range of 64 MB minimum (using 64 Mbit technology) up to 2.0 GB maximum** [See note below] (using 512 Mbit technology) that conforms to the latest Intel JEDEC specification Addendums.
||The Desktop Board D845GRG has been designed to support DIMMs based on 512 Mbit technology for a maximum onboard capacity of up to 2.0 GB, but this technology has not been validated (currently validated up to 1.0 GB using 256 Mbit technology) on this board. Please refer to the memory page for additional information.|
- Can I use ECC DIMMs on the Desktop Board D845GRG?
No. The Desktop Board D845GRG supports unbuffered non-ECC DIMMs only. ECC DIMMs are not supported as they could potentiality exceed the current limitation of the memory voltage regulators.
||Use of ECC DIMMs on the Desktop Board D845GRG could damage the Desktop Board.|
- What kind of problems might occur in a DDR SDRAM-based system that uses non-compliant DIMMs?
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.
- I get a repeating-beep error code and my desktop board does not boot or show any video. What does this mean?
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 D845GRG tested-memory list.
- My system is reporting less memory than what I have installed. Why?
The D845GRG BIOS contains an advanced video configuration control that determines how much of the system's RAM can be reserved for use by the integrated video. The amount of reserved memory is subtracted from the total installed memory. The difference between installed memory and total available system memory can be seen in the BIOS. The frame buffer size can be reduced in BIOS to make more system memory available.
Jumpers/BIOS Setup Options:
- What kind of power supply do I need for the Intel® Desktop Board D845GRG?
The Desktop Board D845GRG requires a power supply that complies with the ATX/ATX12V Power Supply Design Guide Version 1.2 or the SFX/SFX12V Power Supply Design Guide Version 2.1. These design guides are available from http://www.formfactors.org*
The ATX12V power supply required for the Desktop Board D845GRG has the standard 20-pin ATX Main Power Connector, and a 4-pin +12V Aux. Power Connector. The supplemental 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).
||The system will not boot if there is a failure to use an ATX12V or SFX12V power supply, or by not connecting additional power supply leads to the D845GRG board.|
- Do I need a special power supply to support Instantly Available PC (Suspend-to-RAM)? How much +5V standby current does the power supply need to support it?
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 D845GRG and on the add-in cards. Make sure the power supply provides at least that amount of standby current. Refer to the Product Supplement Document for the Intel® Desktop Board D845GRG for information on how much +5V standby current the on-board components of the Desktop Board D845GRG require.
- What is the Intel® Extreme Graphics controller?
Intel® Extreme Graphics controller is the integrated graphics controller within the Intel® 82845G Graphics and Memory Controller Hub (GMCH). The Intel 845G chipset contains two separate, mutually exclusive graphics options. Either the Intel Extreme Graphics controller (contained within the 82845G GMCH) is used, or an AGP add-in video card can be used. When an AGP add-in video card is installed, the on-board Intel Extreme Graphics controller is disabled.
- What is an ADD card?
An AGP Digital Display (ADD) card can be used to provide two multiplexed DVO port interfaces in support of a TV-OUT connector or a flat panel output connector. Only one DVO channel may be in use at any one time.
- What happens if I install an ADD card and connect a monitor to the back panel VGA connector?
When a video AGP add-in card is used, the Intel Extreme Graphics controller is disabled and the AGP connector operates in AGP mode. When an ADD card is detected, the Intel Extreme Graphics controller is enabled and the AGP connector is configured for DVO mode.
- Can I change the size of my integrated video frame buffer?
The D845GRG BIOS can be set to 512 KB, 1 MB, or 8 MB video frame buffer. This memory is dedicated exclusively to the 845G chipset video frame buffer. In addition to any memory dedicated for the video frame buffer, the 845G chipset may dynamically allocate up to 48 MB of system memory for video, as needed. On systems with at least 256 MB of installed system memory up to 64 MB of system memory may be allocated for video. Please check the driver page for latest driver versions.
- What add-in AGP cards can be used?
The D845GRG AGP socket can accept universal AGP cards that comply with the AGP 2.0 specification. The D845GRG can use 1X / 2X / 4X card(s) operating at 1.5V.
||Legacy 3.3V AGP cards are not supported.|
- Can I use the AGP card retention mechanism with any AGP card?
The AGP retention mechanism is made for use with AGP cards that meet the AGP 2.0 specification. These cards have a special slot at the back of the card that interlocks with a small plastic stud on the retention mechanism. Cards that do not meet the AGP 2.0 specification should not be used with the retention mechanism, because the small plastic stud may interfere with correct installation and retention of the card.
- How do I designate an add-in PCI video adapter as my primary video adapter?
The primary video adapter can be changed from the integrated graphics to an add-in PCI adapter through the BIOS Setup program. The setting is located in the Advanced screen under Video Configuration.
- What audio solution is available on the Desktop Board D845GRG?
The Desktop Board D845GRG offers integrated audio that uses a portion of the Intel® 82801DB I/O Controller Hub 4 (ICH4) with an Analog Devices* AD1981A audio codec to create the audio subsystem.
- How can the on-board audio be disabled?
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.
- Does the Desktop Board D845GRG support Ultra ATA/100 hard drives?
Yes. The Desktop Board D845GRG supports Ultra ATA transfer rates up to 100 MB/sec (ATA/100) by way of the ICH4 IDE controller 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 new features of the Intel Desktop Board D845GRG 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.
- Can I mix Ultra ATA devices with other devices on the same IDE channel?
Yes, the chipset is capable of supporting independent IDE device timings. Although, if the hard drives are mixed they may run at the slowest Ultra DMA protocol depending on whether you are using the native operating system IDE driver or Intel® Application Accelerator. Intel® Application Accelerator allows each device to run at its optimal timings. Check with your OS provider to see if their native IDE driver supports independent timings for IDE devices. It is recommended that the Ultra ATA/100 drives be attached to the primary IDE channel using a 40-pin 80-conductor IDE cable and that the other drives be attached to the secondary channel using a good quality, 40-pin 40-conductor IDE cable.
||Some Ultra DMA cables use a hole in the ribbon cable as a cable detect mechanism to determine if an Ultra DMA IDE or standard IDE cable is installed.|
- What type of battery is used in the Desktop Board D845GRG?
A 3 volt, (CR2032) coin cell is used to supply power to the Real Time Clock (RTC) when power is not available from the power supply.
- Why does my Desktop Board D845GRG system fail to boot?
The Desktop Board D845GRG has specific requirements for 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 or SFX12V specification*. If the power supply 2-by-2 connector is not plugged into the board connector located near the processor socket, the system will not boot.
- How do I disable the onboard LAN?
On-board LAN can be disabled through the desktop board BIOS Setup program. The setting is located in the Advanced screen under Peripheral Configuration.
- Why are the drivers on Intel's public Web site previous revisions of those available on some vendor public Web sites?
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.
- Does the Desktop Board D845GRG support two serial ports?
No the Desktop Board D845GRG has one serial port connector. Serial port A is located on the back panel.
- Why isn't my IDE device displayed during power-up POST?
All IDE devices must be ATA4/ATAPI-5 compliant. Cable length is limited to 18 inches. IDE devices not selected as auto-detect in the BIOS setup are not displayed as part of the POST tests.
- Can I use a second floppy disk drive on my Desktop Board D845GRG?
No. The Desktop Board D845GRG uses a SMSC LPC47M172 or National Semiconductor PC87372 SIO component to support the floppy-disk controller. This component and equivalent components can support a single standard legacy type floppy disk drive, either 1.2MB or 1.44MB.
- What type of front panel USB connector should I use?
To ensure that Hi-Speed USB devices run at full speed potential, use only a front panel USB connector that conforms to the USB 2.0 specification for Hi-Speed USB devices. Check with the front panel USB connector vendor or chassis vendor to verify USB 2.0 Hi-Speed compliancy.
- What new features are incorporated into the Desktop Board D845GRG?
Intel Desktop Board D845GRG offers the choice between using the integrated Intel® Extreme Graphics or a high-end AGP add-in card. Intel Extreme Graphics are the perfect solution for business applications and deliver performance for the home and small office user. While integrated Intel Extreme Graphics offer a low-cost, high-performance graphics solution, the AGP slot enables those requiring ultra high frame rates and graphics clarity to add a high-end graphics card. In addition, AGP Digital Display (ADD) cards allow display flexibility by offering Digital Video Out (DVO) circuitry or TV-out encoders.
Hi-Speed USB 2.0 allows the use of multiple high-bandwidth peripherals ranging from PC cameras to portable storage devices. With 40 times the performance of USB 1.1, users can burn CDs six times faster, backup data 11 times faster, and watch full-motion DVD video at TV quality. Hi-Speed USB 2.0 allows users to make a seamless transition to higher-speed technologies with full plug-and-play capability and complete backwards compatibility. The ease-of-use of this technology provides greater customer satisfaction.
- What are Intel® Extreme Graphics?
Intel Extreme Graphics is the integrated graphics solution found only in Intel's third generation chipsets 845G & 845GL. Intel Extreme Graphics offer a rich 3D environment for both the business and the home user and is based on these Intel innovative technologies:
Dynamic Video Memory Technology (DVMT) allows up to 48 MB of system memory to be shared among the OS, applications, and graphics display. A planned driver that allows up to 64 MB will be released shortly after launch. DVMT mitigates the need for additional dedicated stand-alone memory, frees memory for other applications when not needed by the graphics controller, and ensures optimal system memory usage for optimal graphics and system performance.
Zone Rendering Technology (ZRT) is a unique rendering technology developed by Intel for rendering (drawing) 3D graphics scenes. ZRT reduces the memory bandwidth needed to render each scene, ensures most efficient system memory usage for optimal graphics and system performance, and removes the requirement for dedicated graphics memory.
Rapid Pixel Technology and Rendering (RPTR) is a performance enhancement that speeds-up visual effects without impacting system performance. RPTR features an improved 2D BLT engine that has been extended to 256-bit to support faster fill rates. RPTR also features dedicated non-blocking and multi-tier cache structures, single-pass-quad-texture support, and multi-context switching.
These integrated graphics technologies enable you to deliver a system with 3D graphics performance that is comparable to mainstream discrete graphics at a lower cost.
- What is Hi-Speed USB 2.0?
USB 2.0 offers high-speed 40X performance over fast speed USB 1.1 based systems. USB 2.0 is designed for supporting devices with high I/O requirements such as scanners, storage, cameras, and LAN devices. USB 2.0 is backwards compatible with USB 1.1 so that you can continue to use devices, such as USB keyboards and mice, which do not require the high bandwidth that USB 2.0 offers. When purchasing USB 2.0 devices look for the High Speed USB logo. This ensures that the device meets the USB 2.0 specifications.
- What are ADD cards?
The AGP Digital Display (ADD) card enables the Intel Extreme Graphics to offer maximum display flexibility for a variety of devices while using a standard AGP connector. ADD cards can be designed to support up to two devices using the following protocols: TV-out, TMDS, and LVDS. ADD cards are: plug and play, supported by the Intel Extreme Graphics driver stack, and can be used across all 845G platforms reducing your validation times.
- Does Intel qualify memory for use on Intel desktop boards?
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 lab tests system memory and reports passing results to Intel for inclusion on our Internet based tested memory list.
- What is AC?97 and what does it do?
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.
- Why is SoundMAX* with SPX (SoundMAX* 3.0) superior to other integrated audio solutions?
SoundMAX* with SPX delivers the digital sound quality and features that end users expect from digital communications networks and consumer audio equipment. SPX (Sound Production eXtentions) technology and 3D positioning provide immersive gaming not available with any other integrated audio solutions. SPX literally creates sounds in real-time as the user is playing the game, rather than playing the same MIDI or wave file over and over. The result is much more dynamic, responsive sound.
- What is the Communications Network Riser (CNR)?
The Desktop Board D845GRG supports the CNR connector. The CNR connector is designed to support audio, modem, USB* and LAN interfaces of the Intel® 845G chipset. The interfaces supported include AC'97, LAN and SMBus. Some versions of the Desktop Board D845GRG do not ship with a CNR connector.
- What kind of Power Supply is needed for the Intel® Desktop Board D845GRG?
The Desktop Board D845GRG requires an ATX12V or SFX12V* compliant power supply to function according to desktop specifications.
This applies to:
|End of Interactive Support Disclaimer
Intel will not provide future software updates to support new operating systems or improve compatibility with third-party devices and software products.
Solution ID: CS-010413|
Date Created: 28-Mar-2004
Last Modified: 16-Nov-2009