CPU	LGA775 socket for Intel® Core™2 Extreme / Core™2 Duo / Pentium® Extreme / Pentium® D / Pentium® 4 / Celeron® D Processors Intel® Quad-core CPU Ready Compatible with Intel® 06/05B/05A processors * Refer to www.asus.com for Intel CPU support list
Chipset	NVIDIA nForce® 680i SLI™  - Support SLI-Ready Memory Technlogy
Front Side Bus	1333** / 1066 / 800 / 533 MHz ** available when CPU's supporting 1333MHz FSB
Memory	Dual channel memory architecture 4 x DIMM, max. 8GB, DDR2-800/667/533, non-ECC and un-buffered memory * Refer to www.asus.com or user manual for Memory QVL (Qualify Vendor List)
SLI-Ready Memory	1200MHz
Expansion Slots	2 x PCI Express x16 slot, support NVIDIA® SLI™ technology, at full x16, x16 speed(blue) 1 x PCI Express x16, at x8 speed(middle) 1 x PCI Express x1 2 x PCI 2.2
Scalable Link Interface SLI	Support two identical NVIDIA SLI-Ready graphics cards (both at x16 mode) ASUS PEG Link
Storage	South bridge supports:  - 1 x Ultra DMA 133 / 100 / 66 / 33  - 6 x Serial ATA 3.0Gb/s  - NVIDIA MediaShield™ RAID supports RAID 0, 1, 0+1, 5 and JBOD span cross Serial ATA drives Silicon Image® 3132 SATA controller supports  - 2 x External Serial ATA 3.0Gb/s port on back I/O (SATA On-the-Go)
LAN	NVIDIA nForce® 680i SLI™ built-in dual Gigabit MAC with external Marvell PHY Support NVIDIA DualNet® technology
High Definition Audio	SupremeFX Audio Card  - ADI 1988B 8-channel High Definition Audio CODEC  - Support Jack-Sensing, Enumeration, Multi-streaming and Jack-Retasking  - Noise Filter Coaxial, Optical S/PDIF out DTS® Connect ASUS Array Mic
IEEE 1394a	VIA6308P controller supports 2 x 1394a ports
USB	max. 10 USB2.0/1.1 ports(6 ports at mid-board, 4 ports at back panel)
Overclocking Features	Extreme Tweaker Intelligent overclocking tools:  - AI NOS™ (Non-delay Overclocking System - AI Overclocking (intelligent CPU frequency tuner - ASUS AI Booster Utility  - O.C Profile Overclocking Protection:  - ASUS C.P.R.(CPU Parameter Recall
Special Features	LCD Poster EL I/O Onboard LED Onboard Switches: Power / Reset / Clr CMOS Q-Connector Q-Fan Plus ASUS EZ Flash2 ASUS Music Alarm ASUS MyLogo3
Back Panel I/O Ports	1 x LCD Poster 1 x PS/2 Keyboard port(purple) 1 x PS/2 Mouse port(green) 1 x Optical + 1 x Coaxial S/PDIF Output 2 x External SATA 2 x LAN (RJ45) port 4 x USB 2.0/1.1 ports 1 x IEEE1394a port 1 x onboard LED switch
Internal I/O Connectors	3 x USB 2.0 connectors supports additional 6 USB 2.0 ports 1 x Floppy disk drive connector 1 x IDE connector for two devices 6 x SATA connectors 8 x Fan connector: 1 x CPU / 1 x SPS / 3 x Chassis / 3 x Optional 3 x thermal sensor connector 1 x IEEE1394a connector 1 x S/PDIF output connector 1 x Chassis Intrusion connector 24-pin ATX Power connector 8-pin ATX 12V Power connector 1 x EL I/O Shield Connector System panel connector
BIOS	8Mb Award BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.3, Multi-Language BIOS
Manageability	WOL by PME, WOR by PME, Chasis Intrusion, PXE
Accessories	SLI bridge ASUS Array Mic ASUS Optional Fan 3 in 1 ASUS Q-Connector Kit UltraDMA 133/100/66 cable Floppy disk drive cable SATA cables SATA power cables 2-port USB2.0 module IEEE1394a module EL I/O Shield Thermal sensor cables Cable Ties ROG key ring User's manual
Software	The hottest 3D Game: Ghost Recon Striker Extreme Support DVD: Drivers ASUS PC Probe II ASUS Update ASUS AI Booster Futuremark ® 3DMark® 06 Advanced Edition NVIDIA MediaShield™ RAID Kaspersky®  Anti-Virus
Form Factor	ATX Form Factor, 12"x 9.6" (30.5cm x 24.5cm)