CPU	AMD Socket AM3 ;Phenom™II /Athlon™II /Sempron™ 100 Series Processors AMD 140W CPU Support AMD Cool 'n' Quiet™ Technology Supports 45nm CPU
Chipset	AMD 790FX/SB750
System Bus	Up to 5200 MT/s ; HyperTransport™ 3.0
Memory	4 x DIMM, Max. 16 GB, DDR3 1600(O.C.)/1333/1066 ECC,Non-ECC,Un-buffered Memory Dual Channel memory architecture *Refer to www.asus.com or user manual for the Memory QVL (Qualified Vendors Lists) **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.
Expansion Slots	2 x PCIe 2.0 x16 (@ dual x16) 3 x PCIe 2.0 x1 ( the PCIEx1_1 (black) is compatible with audio slot) 1 x PCI 2.2
Multi-GPU Support	Support ATI CrossFire™X Technology graphics cards
Storage	SB750 Chipset 1 xUltraDMA 133/100/66 for up to 2 PATA devices 5 xSATA 3 Gb/s ports Support RAID 0,1,5,10,JBOD 1 x External SATA 3Gb/s port on rear (SATA On-the-Go) * Due to the Windows XP/ Vista limitation, the RAID array with the total capacity over 2TB cannot be set as a boot disk. A RAID array over 2TB can only be set as a data disk only.
LAN	Gigabit LAN controller, featuring AI NET 2
Audio	SupremeFX X-Fi Audio Card 8 -Channel High Definition Audio CODEC - EAX® Advanced™ HD 4.0 - X-Fi CMSS®-3D - X-Fi Crystalizer™ - Creative ALchemy - Supports 1 x S/PDIF out header - Supports Coaxial/Optical S/PDIF out ports on rear
IEEE 1394	2 x 1394a ports (1 port at back I/O, 1 port onboard)
USB	12 USB 2.0 ports (6 ports at mid-board, 6 ports at back panel)
Overclocking Features	MemOK! CPU Level Up Extreme Tweaker Power Design: - 8+2 phase CPU power design Keyboard-TweakIt iROG Loadline Calibration Intelligent overclocking tools: - ASUS TurboV - O.C Profile Overclocking Protection: - COP EX (Component Overheat Protection - EX) - Voltiminder LED - ASUS C.P.R.(CPU Parameter Recall)
Special Features	ASUS MyLogo 3 ASUS EZ Flash 2 ASUS CrashFree BIOS 3 Q-Connector ASUS Q-Fan 2 External LCD Poster ASUS Q-Shield AMD® OverDrive Support* ASUS TurboV
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 1 x Clr CMOS switch 1 x PS/2 Keyboard port(purple)
Internal I/O Connectors	3 x USB connectors supports additional 6 USB 2.0 ports 1 x IEEE 1394a connector 1 x IDE connector for two devices 3 x thermal sensor connector 5 x SATA connectors (Blue) System Panel connector 8 x Fan connectors: 1 x CPU / 1 x PWR / 3 x Chassis / 3 x Optional 1 x LCD Poster connector 24-pin ATX Power connector 8-pin ATX 12V Power connector
BIOS	16 Mb Flash ROM AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.4, ACPI2.0a Multi-Language BIOS
Manageability	WOL by PME,WOR by PME,PXE
Accessories	SupremeFX X-Fi audio card 1 x 2 in 1 Q-connector (USB, System panel; Retail version only) 1 x Multi-functional module (1-port IEEE 1394a + 2-port USB2.0) External LCD Poster UltraDMA 133/100/66 cable Serial ATA cables I/O shield Cable Ties User's manual
Support Disc	Drivers ASUS PC Probe II ASUS AI Suite ASUS Update Kaspersky® Anti-Virus AMD OverDrive Utility (AOD) Sound Blaster X-Fi Utility Futuremark® 3DMark® 06 Advanced Edition
Form Factor	ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.5 cm )