Form Factor ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters])
Processor Support for Intel® Core™2 Extreme processor in an LGA775 socket with a 1066 MHz system bus
Support for an Intel® Core™2 Duo processor in an LGA775 socket with a 1066 MHz system bus
Support for an Intel® Pentium® Processor Extreme Edition in an LGA775 socket with a 1066 or 800 MHz system bus
Support for an Intel® Pentium® 4 Processor Extreme Edition supporting Hyper-Threading Technology† (in an LGA775 socket with a 1066 MHz system bus)
Support for an Intel® Pentium® D processor in an LGA775 socket with an 800 MHz system bus
Support for an Intel Intel® Pentium® 4 processor supporting Hyper-Threading Technology† (in an LGA775 socket with an 800 MHz system bus)
View all supported processors
Memory Four 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) sockets
Support for DDR2 800, DDR2 667, or DDR2 533 MHz DIMMs
Support for up to 8 GB of system memory
Support for ECC and non-ECC memory
Chipset Intel® 975X Express Chipset
Audio Intel® High Definition Audio subsystem in one of the following configurations:
8-channel (7.1) audio subsystem with five analog audio outputs and two S/PDIF digital audio outputs (coaxial and optical) using the Sigmatel* 9274D audio codec
6-channel (5.1) audio subsystem with three analog audio outputs using the Sigmatel 9227 audio codec
ATI* CrossFire* Multi-GPU Platform Support ATI CrossFire technology enables two ATI graphics cards to work together for ultimate 3D gaming performance and visual quality
I/O Control Legacy I/O controller for diskette drive, serial, parallel, and PS/2* ports
LAN Support Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the Intel® 82573E/82573L Gigabit Ethernet Controller
Peripheral Interfaces Eight USB 2.0 ports
Four Serial ATA interfaces with RAID support (four additional interfaces available with optional discrete RAID controller)
One parallel ATA IDE interface with UDMA 33, ATA-66/100 support
One diskette drive interface
One serial port
One parallel port
PS/2* keyboard and mouse ports
Expansion Capabilities Two PCI Conventional* bus add-in card connectors (SMBus routed to both PCI Conventional bus add-in card connectors)
One Primary PCI Express* x16 (electrical x16 or x8) bus add-in card connector
One Secondary PCI Express* x16 (electrical x8) bus add-in card connector
One PCI Express* x16 (electrical x4) bus add-in card connector
