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Product specification.
Motherboard Form Factor D955XBK: ATX (12.0 inches by 9.60 inches [304.80 millimetres
by 243.84 millimetres])
Motherboard chipset Intel® 955X Chipset, consisting of:
. Intel® 82955X Memory Controller Hub (MCH)
. Intel® 82801GR I/O Controller Hub (ICH7-R)
. Firmware Hub (FWH) or Serial Interface (SPI) Flash device
CPU connector type LGA775 socket
Number of CPUs supported 1
Supported CPU types (C,
P3 or P4 etc) Pentium 4 and Pentium 4 Extreme Edition (EE)
Supported CPU speeds CPU No. CPU speed FSB L2 cache L3 cache
840 EE 3.20 GHz 800MHz 2 x 1 MB -
800 -840 2.80 - 3.20
GHz 800 MHz 2 x 1 MB -
EE 3.40 GHz 1066 MHz 512 KB 2 MB
620-670 2.80 - 3.80
GHz 800 MHz 2 MB -
520-570 2.80 - 3.80
GHz 800 MHz 1 MB -
Front side bus speed 1066MHz and 800MHz
Number of PCI slots 3
PCI slot speeds 33MHz
Number of PCI-E slots 1 x PCI-e x16 and 1 x PCI-e x16/x4 and 1 x PCIe x 1
On board video No
Onboard audio type
Intel High Definition Audio subsystem in one of the following
configurations:
• 8-channel (7.1) audio subsystem with five analogue audio outputs and
two S/PDIF digital audio outputs (coaxial and optical) using the Sigmatel
9221 audio codec
Front facing audio header Yes
Audio Upgradeable via PCI/PCI-E
Onboard network fitted Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the
Intel® 82573E/82573V/82574V Gigabit Ethernet Controller
Number of network
connections 1
Upgradeable? Via PCI or PCI-E
Number of IDE channels 1
Number of SATA channels 8 (4 x SATA300 Intel RAID ICH7-R [RAID 0, 1, 0+1 and 5] ) and
(4 x SATA150 Silcon Image RAID Sil 3114 [RAID 0,1 and 0+1])
Maximum number of disks 6 (2 x IDE 2 x SATA) this would require full height ATX case
4 x USB 2 1 x MIC
Note 2 x USB 2 front headers
(2 ports per header) 1 x audio out
1 x serial 1 x audio in
1 x parallel 1 x PS2 mouse
Rear I/O connectors
1 x RJ45 LAN 1 x PS2 keyboard
1 x IEEE1394 (plus two
onboard front headers for an
additional ports IEEE1394a or
b configurable in BIOS)
Memory type 240-pin DDR2 SDRAM DIMM sockets DDR2 533 and DDR2 667
Number of memory sockets Four 240-pin DDR2 SDRAM DIMM sockets
Maximum memory support Support for up to 8 GB of system memory
Supported memory speed DDR 2 533 and DDR2 667
MTBF 91,425.23 hours