CPU Intel Socket 1155 for Intel 2nd Generation Core i7 Processor/Core i5 Processor/Core i3 Processor/ Support Intel 32nm CPU Supports Intel Turbo Boost Technology 2.0 Chipset Intel P67 Express Chipset Memory 4 x DIMM, Max. 32 GB, DDR3 2200(O.C.)*/2133(O.C.)/1866(O.C.)/1600/1333/1066 Non-ECC,Un-buffered Memory Dual Channel memory architecture Supports Intel Extreme Memory Profile (XMP) Expansion Slots 1 x PCIe 2.0 x16 (single at x16) 1 x PCIe 2.0 x16 * (max. at x4 mode [Black]) 2 x PCIe 2.0 x1 3 x PCI Multi-GPU Support Supports ATI Quad-GPU CrossFireX Technology Bluetooth Bluetooth v2.1 + EDR ASUS BT GO! Utility Storage Intel P67 Express Chipset 2 xSATA 6.0 Gb/s ports (gray) 4 xSATA 3.0 Gb/s ports (blue) Intel Rapid Storage Technology Support RAID 0,1,5,10 Marvell 9120 controller 2 xSATA 6.0 Gb/s ports (navy blue) * These SATA ports are for data hard drives only. ATAPI devices are not supported. LAN Realtek 8111E Gigabit LAN controller Audio Realtek ALC892 8-Channel High Definition Audio CODEC - Absolute Pitch 192khz/24bit True BD Lossless Sound - BD Audio Layer Content Protection - DTS Surround Sensation UltraPC - Supports Jack-Detection, Multi-streaming and Front Panel Jack-Retasking - 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 controllers - 4 x USB 3.0/2.0 ports (2 ports at mid-board for front panel support, 2 ports at back panel (blue)) Intel P67 Express Chipset - 12 x USB 2.0/1.1 ports (6 ports at mid-board, 6 ports at back panel) ASUS Unique Features ASUS Dual Intelligent Processors 2 with DIGI+ VRM: ASUS EPU - EPU, EPU switch ASUS TPU - Auto Tuning, TurboV, TPU switch ASUS Digital Power Design - Industry leading Digital 12+2 Phase Power Design - ASUS DIGI+ VRM Utility ASUS BT GO! (Bluetooth) - Folder Sync, BT Transfer, Shot & Send, BT to Net, Music Player, Personal Manager, BT Turbo Remote ASUS Exclusive Features - MemOK! - AI Suite II - AI Charger - Anti Surge - ASUS EFI BIOS EZ Mode featuring friendly graphics user interface ASUS Quiet Thermal Solution - ASUS Fanless Design: Stylish Heat-sink solution - ASUS Fan Xpert ASUS EZ DIY - ASUS Q-Connector - ASUS O.C. Tuner - ASUS CrashFree BIOS 3 - ASUS EZ Flash 2 ASUS Q-Design - ASUS Q-LED (DRAM LED) - ASUS Q-Slot - ASUS Q-DIMM Overclocking Features Precision Tweaker 2 - vCore: Adjustable CPU voltage at 0.005V increment - vCCIO: Adjustable I/O voltage at 0.00625V increment - vCCSA: 144-step system agent voltage control - vDRAM Bus: 160-step Memory voltage control - vPCH: 90-step Chipset voltage control - vCPU_PLL: 160-step CPU & PCH PLL voltage control SFS (Stepless Frequency Selection) - BCLK/PEG frequency tuning from 80MHz up to 300MHz at 0.1MHz increment Overclocking Protection - ASUS C.P.R.(CPU Parameter Recall) Back Panel I/O Ports 1 x Bluetooth module 1 x PS/2 Mouse (green) 1 x PS/2 Keyboard (purple) 1 x IEEE 1394a 1 x LAN(RJ45) port(s) 2 x USB 3.0/2.0 (blue) 6 x USB 2.0/1.1 1 x S/PDIF Out (Optical) 8 -Channel Audio I/O Internal I/O Connectors 1 x USB 3.0/2.0 connector(s) supports additional 2 USB ports (19-pin) 3 x USB 2.0/1.1 connector(s) support additional 6 USB ports 1 x MemOK! Button 4 x SATA 6.0Gb/s connectors (2 x gray; 2 x navy blue) 4 x SATA 3.0Gb/s connectors (blue) 1 x IEEE 1394a connector 1 x CPU Fan connector(s) (4-pin) 2 x Chassis Fan connector(s) (1 x 4-pin; 1 x 3-pin) 1 x Power Fan connector(s) (3-pin) 1 x TPU switch 1 x EPU switch 1 x S/PDIF Out connector 24-pin EATX Power connector 8-pin EATX 12V Power connector Front panel audio connector COM connector System Panel (Q-Connector) BIOS 32 Mb Flash ROM , EFI 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 I/O Shield 2 x SATA 3.0Gb/s cables 2 x SATA 6.0Gb/s cables 2 in 1 Q-connector 1 x 2-port USB 2.0 / 1-port eSATA module 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 )