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CPU
Intel Socket 1156 Core i7 Processor/Core i5 Processor/Core i3 Processor Supports Intel Turbo Boost Technology

Chipset
Intel P55 Express Chipset

Memory
4 x DIMM, Max. 16 GB, DDR3 2200(O.C.)*/1600/1333/1066 Non-ECC,Un-buffered Memory
Dual Channel memory architecture
Supports Intel Extreme Memory Profile (XMP)
*Hyper DIMM support is subject to the physical characteristics of individual CPUs. Some hyper DIMMs only support one DIMM per channel.

Expansion Slots
2 x PCIe 2.0 x16 (single at x16 or dual at x8 / x8 mode)
3 x PCIe 2.0 x1 (2 at 5GT/s [blue]; 1 at 2.5GT/s [gray])
2 x PCI

Multi-GPU Support
Supports NVIDIA Quad-GPU SLI Technology
Supports ATI Quad-GPU CrossFireX Technology

Storage
Intel P55 Express Chipset built-in
6 xSATA 3.0 Gb/s ports
Intel Matrix Storage Technology Support RAID 0,1,5,10
JMicron JMB363 PATA and SATA controller
1 xUltraDMA 133/100/66 for up to 2 PATA devices
1 xExternal SATA 3Gb/s port
1 xSATA 3Gb/s port (black)
Marvell PCIe SATA6Gb/s controller:
- 2 x SATA 6.0 Gb/s ports (Gray)

LAN
Realtek 8112L Gigabit LAN controller featuring AI NET2

Audio
VIA VT1828S 8-Channel High Definition Audio CODEC
- Absolute Pitch BD192/24
- DTS Surround Sensation UltraPC
- Supports Jack-Detection, Multi-streaming, Front Panel Jack-Retasking
- Coaxial / Optical S/PDIF out ports at back I/O

IEEE 1394
VIA 6308P controller supports 2 x 1394a port(s) (one at mid-board; one at back panel)

USB
NEC USB 3.0 controller
- 2 x USB 3.0 ports (Blue, at back panel)

Intel P55 Express Chipset
- 12 x USB 2.0 ports (6 ports at mid-board, 6 ports at back panel)

ASUS Unique Features
Unique PCIe X4 Chip for Ultra Performance
- True USB 3.0 Support
- True SATA 6Gb/s Support
ASUS Xtreme Design:
ASUS Hybrid Processor - TurboV EVO
- Auto Tuning, TurboV , CPU Level UP and Turbo Key
ASUS 16 Hybrid Phase
- T.Probe Technology for Active Cooling
- 12+2 Phase Power Design
* 16 Hybrid Phase = 12+2 Phase x T.Probe
ASUS Hybrid OS - Express Gate
ASUS Exclusive Features
- MemOK!
- ASUS EPU
ASUS Quiet Thermal Solution
- ASUS Fanless Design: Stylish Heatsink
- ASUS Fanless Design: Stack Cool 3
- ASUS Fan Xpert
ASUS Crystal Sound
- ASUS Noise Filter
ASUS EZ DIY
- ASUS Q-Shield
- ASUS Q-Connector
- ASUS O.C. Profile
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 2
- ASUS MyLogo 2
- Multi-language BIOS
ASUS Q-Design
- ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)
- ASUS Q-Slot
- ASUS Q-DIMM

Overclocking Features
Precision Tweaker 2
- vCore: Adjustable CPU voltage at 0.00625V increment
- vIMC: Adjustable IMC voltage at 0.00625V increment
- vDRAM Bus: 104-step DRAM voltage control
- vPCH: 36-step chipset voltage control
- vCPU_PLL: 56-step reference voltage control
SFS (Stepless Frequency Selection)
- PCI Express frequency tuning from 100MHz up to 200MHz at 1MHz increment
- Internal Base Clock tuning from 80MHz up to 500MHz at 1MHz increment
Overclocking Protection
- ASUS C.P.R.(CPU Parameter Recall)

Back Panel I/O Ports
1 x PS/2 Keyboard (Purple)
1 x PS/2 mouse port (Green)
1 x Coaxial S/PDIF Output
1 x Optical S/PDIF Output
1 x IEEE1394a
1 x eSATA port
1 x RJ45 port
2 x USB 3.0/2.0 ports (blue)
6 x USB 2.0/1.1 ports
8-channel Audio I/O

Internal I/O Connectors
3 x USB connectors support additional 6 USB ports
1 x IDE connector
1 x IEEE 1394a connector
1 x CPU Fan connector
1 x Power Fan connector
7 x SATA 3.0Gb/s connectors (blue/black)
2 x SATA 6.0Gb/s connectors (gray)
2 x Chassis Fan connector (1x4-pin, 1x3-pin)
Front panel audio connector
1 x S/PDIF Out Header
24-pin ATX Power connector
1 x 8-pin ATX 12V Power connector
System Panel(Q-Connector)
1 x MemOK! button

BIOS
16 Mb Flash ROM , AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.5, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3

Manageability
WfM 2.0,DMI 2.0,WOL by PME,WOR by PME,PXE

Accessories
User's manual
1 x UltraDMA 133/100/66 cable
2 in 1 Q-connector
2 x Serial ATA 3.0Gb/s cables
2 x Serial ATA 6.0Gb/s cables
1 x 2-port USB and eSATA module
1 x SLI Bridge
ASUS Q-Shield

Support Disc
Drivers
Anti-virus software (OEM version)
ASUS Update
ASUS Utilities

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