Basic Features: Intel D975XBX

Specification Intel D975XBX
CPU Interface LGA775-based Pentium 4, Pentium 4 XE, Celeron D, and Pentium D processors
Chipset Intel 975X - MCH
Pentium D Support 820D, 830D, 840D, 840EE, 920D, 930D ,940D ,950D , 955EE
Front Side Bus 1333 / 1067 / 800 / 533 MHz
Host Burn-In Mode 0 - 30% (in 1 percent increments)
Memory Speeds Default, DDR-2 333, 400, 533, 667, and 800MHz
PCI Bus Speeds Default, 40.00MHz
PCI Express Bus Speeds Default, 101.32, 102.64, 103.96, 105.28, 106.6, 107.92, 109.24MHz
Set Processor Multiplier 12 to 40, (in 1 step increments)
Core Voltage Default, 1.2750V to 1.6000V (in 0.0125V increments)
DRAM Voltage Default, 1.80V, 1.90V, 2.00V, 2.10V, 2.20V
MCH Chipset Voltage Default, 1.525V, 1.600V, 1.650V, 1.725V
FSB Termination Voltage Default, 1.271V, 1.333V, 1.395V
Memory Slots (4) x DIMM, max. 8GB, DDR2 667/533/400, non-ECC, ECC, un-buffered memory
Expansion Slots (2) x PCI-E x16 (operates in 1x16 and 1x8 or 2x8 mode)
(1) x PCI-E x16 (operates in x4 mode)
(2) x PCI 2.3
Onboard SATA Intel ICH7R: (4) x SATA 3Gb/s
Onboard IDE Intel ICH7R: (1) x UltraDMA 100/66/33
(4) x SATA 3Gb/s
RAID 0, RAID 1, RAID 5, RAID 10, and Intel Matrix Storage technology

Silicon Image SiI 3114:
(4) x SATA 1.5Gb/s
RAID 0, RAID 1, RAID 0+1 (operates on PCI bus)
Onboard USB 2.0/IEEE-1394 (8) USB2.0 ports
(2) IEEE 1394a FireWire Ports by TI TSB43AB23
Onboard LAN Intel 82573L PCI-E x1 Gb LAN
Onboard Audio Sigmatel STAC9221D, 8-channel capable HD Audio Codec featuring Dolby Master Studio technology
Power Connectors 24-pin ATX
4-pin 12V Plug
8-pin EATX 12V
Back Panel I/O Ports 1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x Parallel
1 x Serial
1 x Audio I/O Panel
1 x Optical S/PDIF Out Port
1 x Coaxial S/PDIF Out Port
1 x RJ45
4 x USB
Other Features Value Added Software:
Intel® Audio Studio
Intel® Desktop Utilities
Intel® Desktop Control Center
InterVideo* WinDVD*
Ulead* VideoStudio* 9 SE DVD
InterVideo* MediaOne* Gold
Musicmatch* Jukebox
Farstone RestoreIT!* Gold
Farstone Gamedrive*
Norton* Internet Security
Norton* AntiVirus
Yahoo!* Toolbar with Anti-spy
BIOS Intel 0420 (01/05/2006)

The Intel D975XBX is a member of the Extreme Series product family and, as such, is a fully featured flagship board targeted towards the Intel enthusiast. The board ships with an extensive accessory package that includes a 3.5" front panel bay for audio, IEEE1394, and USB 2.0 connections. Intel also includes several desktop utilities for monitoring and tuning your system.

This is the main BIOS screen and displays the generic options available on the board.

The advanced BIOS section allows you to view or change the majority of the system settings.

The advanced screen allows you to set individual parameters for voltage, multipliers, and chipset settings. You must first answer "yes" to the standard legal verbiage before being allowed to modify the limited range of settings. The Host Burn-In Mode Type option allows you to set a positive or negative value when determining whether to increase or decrease the front side bus. The Host Burn-In Mode Percentage option allows you to increase the front side bus up to 30% in 1% increments.

The board fully supports manual memory timing adjustments or allows for a Default setting that will set the memory to the SPD settings. The memory voltage settings have been increased to 2.2V.

Overall, the BIOS options are sparse on the Intel D975X compared to other enthusiast boards, with memory voltage to 2.2V, and a limited range of chipset, bus, and vCore voltage adjustments. However, the support for a 1333 FSB is interesting at this time. The BIOS will not recover by itself if you choose an incorrect setting. You will need to power down the system, switch the BIOS configuration jumper, power on the system, make the necessary changes in the BIOS, power down the system, switch the BIOS configuration jumper, and then power on the system. We cannot understand why Intel continues to require this interaction on their enthusiast board as it can become very frustrating while exploring the performance abilities of varied components.

Index INTEL D975XBX: Features
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  • BigP - Wednesday, June 21, 2006 - link

    Im a self build Virgin - but I'm going in at the deep end. Intel's site makes their Dual Core stuff sound awsome!(a) Is it?(b)Should I look to spend my cash elsewhere when considering a motherboard/processor?
  • Gary Key - Saturday, July 15, 2006 - link

    This board is fine for stock performance and if you get rev-0304 it works very well with Core 2 Duo.
  • FOXY25 - Sunday, February 4, 2007 - link

    hi that are my system setting. My system sometimes make complete restart and i dont know why. I have change entire board with another and nothing. Do y think that could be in memory i have 2x DDR2 1024 MB at 800 Mhz Kingmax. thanks for answer.Foxy

    ====== Board ======
    Manufacturer Intel Corporation
    Product Name D975XBX
    Version AAD27094-306
    Serial Number BQBX645001ND
    BIOS Version BX97510J.86A.1476.2007.0119.1334
    BIOS ROM Size 512 KB
    BIOS Release Date 19.1.2007

    ====== Processor ======
    Manufacturer Intel(R) Corporation
    Processor Name Intel(R) Core(TM)2 CPU 6400 @ 2,13GHz (2 Cores)
    Bus Speed 1067 MHz
    Processor Speed 2,133 GHz
    Stepping 6
    Form Factor Other
    Hyper-Threading Technology Status Not Supported

    ====== Cache ======
    L1 Cache Data Cache 32 KB, Code Cache 32 KB Per Processor Core
    L2 Cache 2048 KB Unified Cache (2048 KB Cache Per 2 Cores)

    ====== Memory ======
    Error Correction Single-bit ECC
    Maximum System Memory 4 GB
    Memory Slots 4

    ---- CHAN A DIMM 0 ----
    Socket Designation CHAN A DIMM 0
    Current Memory Type DDR2
    Installed Size No Module Installed

    ---- CHAN A DIMM 1 ----
    Socket Designation CHAN A DIMM 1
    Current Memory Type DDR2
    Installed Size 1024 MB
    Memory Speed 800 MHz

    ---- CHAN B DIMM 0 ----
    Socket Designation CHAN B DIMM 0
    Current Memory Type DDR2
    Installed Size No Module Installed

    ---- CHAN B DIMM 1 ----
    Socket Designation CHAN B DIMM 1
    Current Memory Type DDR2
    Installed Size 1024 MB
    Memory Speed 800 MHz

    ====== Onboard Devices ======
    #Device Type Ethernet
    Device Description Intel (R) 82562 Ethernet Device
    Device Status Enabled
    #Device Type Sound
    Device Description Intel(R) Azalia Audio Device
    Device Status Disabled
    #Device Type Other
    Device Description Silicon Image 3114 SATA RAID Controller
    Device Status Disabled
    #Device Type Other
    Device Description Texas Instruments TSB82AA2 1394A/B Controller
    Device Status Disabled

    ====== Hard Drive ======
    #Model ST3320620AS
    Max. Transfer Mode UDMA 6 (ATA/133)
    Active Transfer Mode UDMA 5 (ATA/100)
    S.M.A.R.T. Status Enabled
    Size 298,09 GB
    #Model ST380811AS
    Max. Transfer Mode UDMA 6 (ATA/133)
    Active Transfer Mode UDMA 5 (ATA/100)
    S.M.A.R.T. Status Enabled
    Size 74,53 GB

  • JarrettV - Thursday, February 23, 2006 - link

    Does this board support dolby digital live in the sigmatel audio chipset? I'm looking to replace my old SoundStorm setup.

    Also, does Intel High Definition = Dolby Digital Live support?
  • neilfeier - Wednesday, February 22, 2006 - link

    Unlike most users of this motherboard that want to use the dual x8 PCIe slots for graphics, I want to use them for benchmarking a pair of x4 data acquisition boards we are developing. I want to test max rates to and from memory, as well as peer-to-peer transfers between the two boards (assuming the MCH allows this).

    So my question is: Do you think I can I put a x16 or x8 PCIe graphics card in the third x4 PCIe slot hanging off the south bridge? I don't care about graphics performance too much, I just want a dual monitor card that will work in that slot and leave the main two slots free.

    And ideas on this would be helpful. Thanks!
  • Gary Key - Wednesday, February 22, 2006 - link

    I will try it this weekend and report back.
  • neilfeier - Friday, March 3, 2006 - link

    Thanks Gary, I anxiously await the results of your experiment.

  • Gary Key - Thursday, March 9, 2006 - link

    Hi Neil,

    I had video working in this slot. I updated to the new bios release today and will test the performance in a couple of days.

  • Gary Key - Tuesday, March 28, 2006 - link


    Performance is average but it works.

  • Missing Ghost - Monday, January 30, 2006 - link


    The x16 interface supports full duplex transfers up to 8 GBytes/second in x16 operation and single-ended transfers are supported up to 4 GBytes/second in x8 operation.

    error! That's not how pcie works! pcie is always full duplex, and never single-ended!

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