CPU

Socket775 for Intel^® Pentium Processor Extreme Edition / Pentium D* / Pentium 4 / Celeron CPU
Compatible with Intel^® 05B/05A and 04B/04A processors
Intel^® EM64T/ EIST*/Hyper-Threading Technology
* Refer to www.asus.com/support for Intel^® Pentium D CPU and EIST support list

Chipset

NVIDIA^® nForce4^™ SLI Intel^® Edition
NVIDIA^® MCP-04

Front Side Bus

1066 / 800 / 533MHz

Memory

Dual channel memory architecture
4 x 240-pin DIMM sockets support max. 8GB DDR2 667/533 non-ECC memory
Support NVIDIA DASP 3.0 (dynamic adaptive speculative preprocessor) and QuickSync features

Expansion Slots

2 x PCI Express x16
- SLI mode: x8, x8
- Default (Single VGA) mode: x16, x1
2 x PCI Express x1
3 x PCI
PCI 2.2

SLI

Under SLI mode: support two identical SLI-ready graphics cards
Under Default(Single VGA) mode:
- 1 x PCI Express x16 graphics card on the first slot (blue)
- 1 x PCI Express x1 card on second slot (black)
ASUS EZ Selector
ASUS EZ Plug
ASUS SLI Warning LED
ASUS two-slot thermal design
ASUS PEG Link for dual PCI Express graphics cards

Storage/RAID

NVIDIA® MCP-04 Southbridge supports NVRAID
- 2 x Ultra DMA 133/100/66/33
- 4 x Serial ATA 3 Gb/s
- NVRAID: RAID0, 1, 0+1, 5, and JBOD span cross Serial ATA and Parallel ATA drives
- Supports multi-RAID
- Supports up to 8 drives for RAID function

LAN

Intel 82540EM Gigabit LAN controller

Audio

Realtek ALC850 8-channel CODEC
Universal Audio Jack
Audio Sensing and Enumeration Technology
Coaxial/Optical S/PDIF out ports on back I/O

USB

Supports up 10 USB2.0 ports

Overclocking Features

Intelligent overclocking tools:
- AI NOS(Non-delay Overclocking System)
- AI Overclocking (intelligent CPU frequency tuner)
- ASUS PEG Link - Automatically performance tuning for single/dual graphics cards
- ASUS CPU Lock Free
- ASUS Ai Booster Utility

Precision Tweaker:
- vDIMM: 8-step DRAM voltage control
- vCore: Adjustable CPU voltage at 0.0125V increment SFS (Stepless Frequency Selection)
- FSB tuning from 133MHz up to 400MHz at 1MHz increment
- Memory tuning from 400MHz up increment
- PCI Express frequency tuning from 100MHz up to 150MHz at 1MHz increment

Overclocking Protection:
- ASUS C.P.R.(CPU Parameter Recall)

Other ASUS Special Features

Fanless Design
AI NET2 network diagnosis before entering OS
CrashFree BIOS 2
Q-Fan
MyLogo2
EZ Flash
Multi-language BIOS

BIOS

4 Mb Flash ROM, AWARD BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.3

Back Panel I/O Ports

1 x Parallel
1 x Coaxial S/PDIF Output
1 x PS/2 Keyboard
1 x PS/2 Mouse
2 x RJ45
4 x USB 2.0/1.1
8-Channel Audio I/O

Internal I/O Connectors

1 x SLI selector card connector
3 x USB connectors supports additional 6 USB 2.0 ports
1 x COM connector
1 x GAME/MIDI connector
CPU Fan / 2x Chassis Fan/ Power Fan connectors
Front panel audio connector
Chassis Intrusion connector
CD / AUX audio in
24-pin ATX Power connector
4-pin ATX 12V Power connector
4-pin EZ Plug power connector

Support CD

Drivers
ASUS PC Probe 2
ASUS Update
ASUS AI Booster
NVIDIA RAID
Anti-virus software (OEM version)

Accessories

1 x SLI connector
1 x SLI retention bracket
2 x SATA cables
SATA power cables for 2 devices
1 x UltraDMA 133/100/66 cable
1 x IDE cable
1 x FDD cable
1 x I/O Shield
User' s manual

Form Factor

ATX Form Factor, 12"x 9.6"(30.5cm x 24.5cm)