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CPU
Intel Socket 775 for Intel Core2 Extreme/Core2 Quad/ Core2 Duo/Pentium dual-core/Celeron dual-core /Celeron Processors
Support Intel next generation 45nm Multi-Core CPU
Compatible with Intel 06/05B/05A processors

Chipset
Intel X48 / ICH9R
Intel Fast Memory Access Technology

Front Side Bus
1600/1333/1066/800 MHz

Memory
4 x DIMM, Max. 8 GB, DDR3 2000(O.C.)/1800(O.C.)/1600/1333/1066/800 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
- Supports Intel Extreme Memory Profile (XMP)
- For the X.M.P. support, CPUs with FSB 1333 or above are recommended.
- 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 , support at full x16, x16 speed
3 x PCIe x1 ( the PCIEx1_1 (black) is compatible with audio slot)
2 x PCI 2.2

CrossFire
Support ATI CrossFireX Technology graphics cards

Storage Southbridge
6 xSATA 3 Gb/s ports
Intel Matrix Storage Technology Support RAID 0,1,5,10

LAN
Dual Gigabit LAN controllers, both featuring AI NET2
Support Teaming Technology

Audio
SupremeFX X-Fi Audio Card
- ADI AD2000B 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
Fusion Block System with optional thermal kit on MOS and NB
Extreme Tweaker
TweakIt
Extreme Engine
- 16-phase CPU power design
- 3-phase NB power design
- 2-phase DDR3 power design
- ML Caps on CPU, memory and NB respectively
Speeding HDD
iROG
BIOS Flashback
Loadline Calibration
Intelligent overclocking tools:
- CPU Level Up
- Memory Level Up
- AI Gear 3 +
- ASUS AI Booster Utility
- O.C Profile
Overclocking Protection:
- COP EX (Component Overheat Protection - EX)
- Voltiminder LED
- ASUS C.P.R.(CPU Parameter Recall)

Special Features
External LCD Poster
Onboard Switches: TweakIt / Power / Reset / Cls CMOS (at rear)
EL I/O
Q-Fan Plus
ASUS EPU-6 Engine
ASUS Q-Connector
ASUS Fan Xpert
ASUS EZ Flash 2
ASUS CrashFree BIOS 3
ASUS MyLogo3

Back Panel I/O Ports
1 x PS/2 Keyboard port(purple)
1 x External SATA port
2 x LAN (RJ45) port
6 x USB 2.0/1.1 ports
1 x IEEE1394a port
1 x Clr CMOS switch

Internal I/O Connectors
3 x USB 2.0 connectors supports additional 6 USB 2.0 ports
1 x Floppy disk drive connector
1 x IDE connector for two devices
6 x SATA connectors (Blue)
2 x Speeding HDD SATA connectors (Black)
8 x Fan connectors: 1 x CPU / 1 x PWR / 3 x Chassis / 3 x Optional
3 x thermal sensor connectors
1 x IEEE1394a connector
1 x LCD Poster connector
1 x EL I/O Shield connector
1 x Chassis Intrusion connector
24-pin ATX Power connector
8-pin ATX 12V Power connector
1 x En/Dis-able Clr CMOS slide switch
System panel connector

BIOS
16 Mb Flash ROM
DMI 2.0
AMI BIOS
PnP
WfM 2.0
SM BIOS 2.4
ACPI 2.0a
Multi-language BIOS

Manageability
WOL by PME,WOR by PME,Chasis Intrusion,PXE

Accessories
Fusion Block System Accessory
Optional Thermal Kit for NB and MOS
DIY Pedestal
ASUS Optional Fan
SupremeFX X-Fi Audio Card
External LCD Poster
3 in 1 ASUS Q-Connector Kit
UltraDMA 133/100/66 cable
Floppy disk drive cable
SATA cables
SATA power cables
2-port USB2.0 + IEEE 1394a module
EL I/O Shield
Thermal sensor cables
Cable Ties
User's manual

Support Disc
Drivers and applications
ASUS PC Probe II
ASUS Update
ASUS AI Suite
Sound Blaster X-Fi Utility
Futuremark 3DMark 06 Advanced Edition
Kaspersky Anti-Virus

Form Factor
ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x24.5 cm )