CPU

AMD Socket 939 Athlon64/Athlon64 FX/Athlon64 X2/ Processors
AMD Cool 'n' Quiet™ Technology
AMD 64 architecture enables simultaneous 32-bit and 64-bit computing

Chipset

NVIDIA nForce4

System Bus

2000/1600 MT/s

Memory

4 x184-pin DIMM, Max. 4 GB, DDR 400/333/266 SDRAM ,ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture

Expansion Slots

1 x PCIe x16
1 x PCIe x4
2 x PCIe x1
3 x PCI

Storage

Southbridge
2 xUltraDMA 133/100/66/33
4 xSATA 1.5 Gb/s ports Support RAID 0,1,0+1,JBOD 
Span cross SATA and PATA

LAN

nForce4 built-in Gigabit/ MAC with external PHY : NV Firewall AI NET2

Audio

Realtek ALC850, 8 -Channel CODEC
Coaxial / Optical S/PDIF out ports
Audio Sensing and Enumeration Technology

USB

10 USB 2.0 ports

ASUS AI Proactive Features

AI NOS (Non-delay Overclocking System)
AI NET2 network diagnosis before entering OS

Overclocking Features

Intelligent overclocking tools
- ASUS PEG Link
- AI Overclocking (intelligent CPU frequency tuner)
- ASUS AI NOS (Non-delay Overclocking System)
Precision Tweaker
- vDIMM: 9 -step DRAM voltage control
- vCore: Adjustable CPU voltage at 0.0125 increment
- PCIe Frequency: allowing PCIe frequency from 100MHz up to 200MHz at 1MHz increment
- Fixed PCIe/PCI/SATA frequencies
SFS (Stepless Frequency Selection)
- FSB tuning from 200MHz up to 400MHz at 1MHz increment
Overclocking Protection
- ASUS C.P.R.(CPU Parameter Recall)

Special Features

Multi-language BIOS
ASUS MyLogo 2
ASUS EZ Flash
ASUS CrashFree BIOS 2
ASUS Q-Fan
ASUS Instant Music

Back Panel I/O Ports

1 x Parallel
1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x S/PDIF Out
1 x LAN(RJ45) port
4 x USB 2.0/1.1
8 -Channel Audio I/O

Internal I/O Connectors

3 x USB connectors supports additional 6 USB 2.0 ports
1 x CPU Fan connector
2 x Chassis Fan connector
1 x Power Fan connector
1 x4-pin ATX 12V Power connector
24 -pin ATX Power connector
Front panel audio connector
COM connector
Game/MIDI port connector
Chassis Intrusion connector
CD/AUX audio in

Form Factor

ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x 24.5 cm )