Specifications

CPU	AMD Socket AM3 ;PhenomII /AthlonII /Sempron 100 Series Processors AMD 140W CPU Support Support 45nm CPU
Chipset	NVIDIA nForce 980a SLI Supports NVIDIA Clock Calibration(NVCC) function
System Bus	Up to 5200 MT/s ;HyperTransport 3.0
Memory	4 x DIMM, Max. 16 GB, DDR3 2000(O.C.)/1333/1066 ECC,Non-ECC,Un-buffered Memory Dual Channel memory architecture *AMD AM3 100 and 200 series CPU support up to DDR3 1066MHz **Due to OS limitation, when installing total memory of 4GB capacity or more, Windows 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended. ***Refer to www.asus.com or the user manual for the Memory QVL (Qualified Vendors Lists)
Expansion Slots	2 x PCIe 2.0 x16 (dual @ x16 ) 2 x PCIe x1 2 x PCI 2.2
Multi-GPU Support	Supports NVIDIA SLI Technology (dual @ x16) Supports NVIDIA Hybrid SLI Technology
Storage	NVIDIA nForce 980a SLI chipset 1 xUltraDMA 133/100 5 xSATA 3.0 Gb/s ports (Legacy IDE operation is only supported on ports 14.) NVIDIA MediaShield RAID Support RAID 0,1,0+1,5,JBOD 1 x External SATA 3.0 Gb/s port (SATA On the Go)
LAN	Broadcom B5071 Gigabit LAN Controller featuring AI NET 2
Audio	VIA VT1708S 8-Channel High Definition Audio CODEC - Supports Jack-Detection, Multi-Streaming, and Front Panel Jack-Retasking - Coaxial and Optical S/PDIF Out ports at back I/O - ASUS Noise Filter
IEEE 1394	VIA VT6308P controller supports 2 x 1394a port(s) (1 port at mid-board, 1 port at back panel)
USB	12 USB 2.0/1.1 ports (6 ports at mid-board, 6 ports at back panel)
ASUS Unique Features	ASUS Exclusive Features - Core Unclocker - MemOK! ASUS Power Solutions - 8+1 Phase Power Design - 100% Long-Life Capacitors - EPU ASUS Quiet Thermal Solution - ASUS Fanless Design: Heat-pipe solution - Stack Cool 3+ - Fan Xpert ASUS Express Gate ASUS Crystal Sound - ASUS Noise Filter ASUS EZ DIY: - ASUS Q-Connector - ASUS O.C. Profile - ASUS CrashFree BIOS 3 - ASUS EZ Flash 2 - ASUS MyLogo 2 - Multi-language BIOS
Overclocking Features	Intelligent overclocking tools - ASUS Turbo Key - ASUS TurboV Precision Tweaker 2 - vCore: Adjustable CPU voltage at 0.0125V increment - vHT Bus: Adjustable HT voltage at 0.02V increment - vDIMM: Adjustable DRAM voltage at 0.02V increment - vChipset: Adjustable NB voltage at 0.02V increment SFS (Stepless Frequency Selection) - FSB tuning from 200MHz up to 600MHz at 1MHz increment - PCI Express frequency tuning from 100MHz up to 200MHz at 1MHz increment Overclocking Protection - ASUS C.P.R.(CPU Parameter Recall)
Back Panel I/O Ports	1 x External SATA 1 x IEEE 1394a 1 x LAN(RJ45) port 6 x USB 2.0/1.1 8 -Channel Audio I/O 1 x PS/2 Keyboard port (purple) 1 x PS/2 Mouse port (green) 1 x Coaxial S/PDIF Out port 1 x Optical S/PDIF Out port
Internal I/O Connectors	3 x USB connectors supports additional 6 USB ports 1 x IDE connector 1 x IEEE 1394a connector 1 x CPU Fan connector 1 x Power Fan connector 1 x COM connector 5 x SATA 3.0Gb/s connectors 2 x Chassis Fan connector (1 x 3 pin, 1 x 4 pin) 1 x MemOK! button 1 x Core Unlocker switch 1 x S/PDIF Out header Front panel audio connector 24-pin ATX Power connector 8-pin ATX 12V Power connector System Panel(Q-Connector)
BIOS	8 Mb Flash ROM , AMI BIOS, SPI, PnP, DMI2.0, WfM2.0, SM BIOS 2.5, ACPI 2.0a, ASUS EZ Flash 2, ASUS CrashFree BIOS 3
Manageability	WOL by PME,WOR by PME,WOR by Ring,PXE
Accessories	User's manual 1 x I/O Shield 4 x SATA cable(s) 1 x UltraDMA 133/100 cable 1 x SLI bridge cable Q-Connector
Support Disc	Drivers Anti-virus software (OEM version) ASUS Update ASUS Utilities
Form Factor	ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )