Intel P55

The Intel? P55 Express Chipset is the latest one-chipset design to support latest 1156 socket Intel? Core? i7/Core? i5 Processors. Intel? P55 providing improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability.

PCIe 2.0

Double Speed; Double Bandwidth
This motherboard supports the latest PCIe 2.0 devices for double speed and bandwidth which enhances system performance.

Auto Tuning

Auto System Level Up
Achieve extreme yet stable overclocking results automatically with Auto Tuning! With built-in stability testing, Auto Tuning lets even beginners improve performance with no additional cost.

T.Probe

Leading Active Cooling Technology
The T.Probe microchip detects and balances power phase loads and temperatures real-time. With optimal power phase functions, components run cooler and extend system lifespan.

ASUS EPU

System Level Energy Saving
The new ASUS EPU - the world's first power saving engine, has been upgraded to a new six engine version, which provides total system power savings by detecting current PC loadings and intelligently moderating power in real-time. With auto phase switching for components (which includes the CPU, VGA card, memory, chipset, drives and system fan), the EPU automatically provides the most appropriate power usage via intelligent acceleration and overclocking - helping save power and money.

Fan Xpert

Active Quiet & Cool
ASUS Fan Xpert intelligently allows users to adjust both the CPU and chassis fan speed according to different ambient temperature , which is caused by different climate conditions in different geographic regions and system loading.Built-in variety of useful profiles offer flexible controls of fan speed to achieve a quiet and cool environment.

DTS Surround Sensation UltraPC

DTS Surround Sensation UltraPC delivers exceptional 5.1 surround experience through the most common PC audio setups - your existing stereo speakers or headphones. In addition to virtual surround, “Bass enhancement” provides stronger low frequency bass sound, and “Voice clarification” provides clear human dialogue even with loud background sound. With these technologies, you may experience a better home-theater audio with ease.

ASUS Q-Design

DIY quickly, DIY easily!
ASUS Q-Design enhances your DIY experience. All of Q-LED, Q-Slot and Q-DIMM design speed up and simplify the DIY process!

Q-Connector

Make connection quick and accurate!
The ASUS Q-Connector allows you to connect or disconnect chassis front panel cables in one easy step with one complete module. This unique adapter eliminates the trouble of plugging in one cable at a time, making connection quick and accurate.

O.C. Profile

Conveniently store or load multiple BIOS settings
Freely share and distribute favorite overclocking settings The motherboard features the ASUS O.C. Profile that allows users to conveniently store or load multiple BIOS settings. The BIOS settings can be stored in the CMOS or a separate file, giving users freedom to share and distribute their favorite overclocking settings.

S/PDIF-out on Back I/O Port

This motherboard provides convenient connectivity to external home theater audio systems via coaxial and optical S/PDIF-out (SONY-PHILIPS Digital Interface) jacks. It allows to transfer digital audio without converting to analog format and keeps the best signal quality.

CPU	Intel? Socket 1156 Core? i7 Processor/Core? i5 Processor Supports Intel? Turbo Boost Technology
Chipset	Intel? P55 Express Chipset
Memory	4 x DIMM, Max. 16 GB, DDR3 2133(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. Please refer to Memory QVL for details. **Refer to www.asus.com or this user manual for the Memory QVL(Qualified Vendors Lidts).
Expansion Slots	2 x PCIe 2.0 x16 (single at x16 or dual at x8/x8 mode) 1 x PCI Express 2.0 x16 slots (at x4 mode, 2.5GT/s) 2 x PCI Express 2.0 x1 (2.5GT/s) 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 port JMicron? JMB322 (DriveXpert Technology) : - 2 x SATA 3.0 Gb/s ports (navy blue and gray) - Supports EZ Backup and SuperSpeed functions *Drive Xpert function is available only when the hard disk drives are set as data drives.
LAN	Dual Gigabit LAN controllers Realtek? 8112L / 8110SC Gigabit LAN controller featuring AI NET2 and Teaming
Audio	VIA? VT1828 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 ports (one at mid-board; one at back panel)
USB	14 USB 2.0/1.1 ports (6 ports at mid-board, 8 ports at back panel)
ASUS Unique Features	ASUS Hybrid Processor - TurboV EVO - Auto Tuning, TurboV 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 Xtreme Design ASUS Exclusive Features - ASUS Drive Xpert - MemOK! - ASUS EPU ASUS Quiet Thermal Solution - ASUS Fanless Design: Heat-pipe solution - ASUS Fanless Design: Stack Cool 3 - ASUS Fan Xpert ASUS Crystal Sound - ASUS Noise Filter ASUS EZ DIY - ASUS Q-Connector - ASUS Q-Shield - 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: 81-step DRAM voltage control - vPCH: 2-step chipset voltage control - vCPU_PLL: 4-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 External SATA 2 x S/PDIF Out ( Coaxial x 1, Optical x 1 ) 1 x IEEE 1394a 2 x LAN(RJ45) port 8 x USB 2.0/1.1 8 -Channel Audio I/O 1 x PS/2 Keyboard (Purple) 1 x PS/2 mouse port (Green) 1 x Clear CMOS switch
Internal I/O Connectors	3 x USB connectors support additional 6 USB ports 1 x IDE connector 6 x SATA connectors 1 x IEEE 1394a connector 1 x CPU Fan connector 1 x Power Fan connector 2 x Drive Xpert SATA connectors (navy blue and gray) 2 x Chassis Fan connector (1x4-pin, 1x3-pin) Front panel audio connector 1 x S/PDIF Out Header 1 x CD audio in 1 x COM connectot 1 x 24-pin ATX Power connector 1 x 8-pin ATX 12V Power connector System Panel(Q-Connector) 1 x MemOK! button 1 x Power on switch 1 x Reset switch 1 x COM port connector
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 4 x SATA cable(s) 1 x 2-port USB and eSATA module ASUS Q-Shield 2 in 1 Q-connector 1 x ASUS SLI bridge connector
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 )