AMD Socket AM2+ / AM2 Phenom™ X4/Phenom™ X3/Athlon™ /Athlon™ X2/Sempron™ Processors
Support AM3 Phenom™ II/Athlon™ X4/Athlon™ X3/ Athlon™ X2 Processors
AMD® Cool 'n' Quiet™ Technology
Support 45nm Phenom™ II CPU
AMD 140W CPU Support

Up to 5200 MT/s HyperTransport™ 3.0 interface for AM3 / AM2+ CPU
2000 / 1600 MT/s for AM2 CPU

4 x DIMM, Max. 16 GB, DDR2 1300(O.C.)/1200(O.C.)/1066*/800/667 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
*Due to AMD CPU limitation, DDR2 1066 is supported by AM2+ / AM3 CPU for one DIMM per channel only. Refer to www.asus.com 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.

4 x PCIe 2.0 x16 slots, support ATI CrossFireX™ technology (@ dual x16, triple x16 / x8 / x8, or quad x8 link)
2 x PCI 2.2

SB750 Chipset
1 x UltraDMA 133/100/66 for up to 2 PATA devices
5 x SATA 3 Gb/s ports Support RAID 0,1,5,10,JBOD
1 x eSATA 3Gb/s port
*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. For more information, please refer to http://support.microsoft.com/kb/946557/en-us

Realtek® ALC1200 8 -Channel High Definition Audio CODEC
ASUS Noise Filtering
Supports Jack-Detection, Multi-Streaming, and Front Panel Jack-Retasking
Coaxial / Optical S/PDIF Out ports at back I/O

VIA® VT6315N controller supports 2 x 1394a ports (1 at mid-board; 1 at back panel)

ASUS Power Solutions:
- 8+2 Phase Power Design
- ASUS Anti-Surge Protection
ASUS Green Design:
- EPU
*ASUS EPU is supported by AM2+/AM3 CPU only.
- ASUS AI Nap
Express Gate
ASUS Quiet Thermal Solutions:
- ASUS Fanless Design: Heat pipe solution
- ASUS Fanless Design: Stack Cool 2
- ASUS Q-Fan 2
ASUS EZ DIY:
- ASUS Q-Shield
- ASUS Q-Connector
- ASUS O.C. Profile
- ASUS CrashFree BIOS 2
- ASUS EZ Flash 2
- Onboard Switch

Intelligent overclocking tools:
- AI Overclocking (Intelligent CPU Frequency Tuner)
- TurboV
- Turbo Key
Precision Tweaker 2:
- vCore: Adjustable CPU voltage at 0.0125V increment
- vChipset (NB): 16-step Chipset voltage control
- vDIMM: 36-step DRAM voltage control
SFS (Stepless Frequency Selection)
- FSB tuning from 200MHz up to 600MHz at 1MHz increment
- PCI Express frequency tuning from 100MHz up to 150MHz at 1MHz increment
Overclocking Protection:
- ASUS C.P.R. (CPU Parameter Recall)

100% High-quality Japan-made Conductive Polymer Capacitors! (5000hrs VRM, over 57 years operation lifespan at 65°C)
ASUS MyLogo 2
AMD® OverDrive Support*
*Advanced cooling system is required when advanced overclocking functions of AMD OverDrive are enabled.

1 x PS/2 keyboard port (Purple)
1 x PS/2 mouse port (Green)
1 x S/PDIF Out port (Coaxial)
1 x S/PDIF Out port (Optical)
1 x External SATA port
1 x IEEE1394a port
1 x LAN (RJ45) port
6 x USB 2.0/1.1 ports
8-channel Audio I/O ports

3 x USB connectors support additional 6 USB ports
1 x Floppy disk drive connector
1 x IDE connector
5 x SATA connectors
1 x IEEE 1394a connector
1 x CPU Fan connector
1 x Power Fan connector
1 x COM connector
Front panel audio connector
Chassis Intrusion connector
2 x Chassis Fan connectors
1 x S/PDIF Out header
CD audio in
24-pin ATX Power connector
System Panel (Q-Connector)
8-pin ATX 12V Power connector
1 x Power on Switch
1 x Reset Switch

8 Mb Flash ROM
AMI BIOS, PnP, DMI 2.0, SM BIOS 2.5, ACPI 2.0a, ASUS EZ Flash 2, ASUS CrashFree BIOS 2

2 x ASUS CrossFire bridge cables
1 x Ultra DMA 133/100/66 cable
5 x Serial ATA cables
1 x Q-Shield
1 x User's manual
1 x Multi-functional module (1-port IEEE 1394a + 2-port USB2.0)
1 x 2 in 1 Q-connector (USB, System panel; Retail version only)
*The floppy disk drive cable is purchased separately.

Drivers
Express Gate
ASUS PC Probe II
ASUS Update
ASUS AI Suite
AMD OverDrive Utility (AOD)
Anti-virus software (OEM version)

ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )