specification cpu intel® socket 775 lga775 socket for intel® core™2 extreme/core™2 quad/ core™2 duo/pentium® dual-core/celeron® dual-core /celeron® processors compatible with intel® 05b/05a/06 processors intel® 45nm multi-core cpu support chipset intel® g45 / ich10 with intel® fast memory access (fma) technology front side bus 1600/1333/1066/800 mhz memory 4 x dimm, max. 16 gb, ddr2 1066(o.c.)/800/667 non-ecc,un-buffered memory 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 1 x pcie 2.0 x16 2 x pcie x1 1 x pci vga integrated intel® graphics media accelerator x4500hd dual vga output support: dvi-d and rgb supports rgb with max. resolution 2048 x 1536@75hz supports dvi with max. resolution 1920 x 1080@60hz maximum shared memory of 1849 mb supports microsoft® directx® 10, opengl® 2.1, pixel shader 4.0 storage southbridge 6 xsata 3 gb/s ports marvell® 6102 1 x ultradma 133/100/66 for up to 2 pata devices lan realtek® 8111c pci-e gigabit lan controllers, featuring ai net2 audio realtek® alc 1200 8 -channel high-definition audio codec - support jack-dectection, multi-streaming - asus noise filtering usb 12 usb 2.0 ports (6 ports at mid-board, 6ports at back panel) asus unique features asus power saving solution: - asus epu-4 engine - ai nap asus express gate asus quiet thermal solution: - asus fanless design - asus fan xpert asus crystal sound: - asus noise filtering asus ez diy: - asus o.c. profile - asus crashfree bios 3 - asus ez flash 2 overclocking features precision tweaker 2: -core:adjustable cpu voltage at 0.00625v increment -dimm:45-step dram voltage control -chipset (nb):30-step chipset voltage control -cpu pll:35-step cpu pll voltage control -fsb termination:25-step reference voltage control sfs (stepless frequency selection) - fsb tuning from 200mhz up to 800mhz at 1mhz increment - pci express frequency tuning from 100mhz up to 180mhz at 1mhz increment overclocking protection: - asus c.p.r.(cpu parameter recall) special features asus mylogo 2™ back panel i/o ports 1 x ps/2 keyboard/mouse combo port 1 x d-sub port 1 x dvi port 1 x lan (rj45) port 6 x usb 2.0/1.1 8-channel audio i/o internal i/o connectors 3 x usb connectors support additional 6 usb ports 1 x floppy disk drive connector 1 x ide connector 1 x com connector 6 x sata connectors 1 x cpu fan connector 1 x chassis fan connector 1 x power fan connector front panel audio connector 1 x s/pdif out header chassis intrusion connector cd audio in connector 24-pin atx power connector 1 x 4-pin atx 12v power connector system panel bios 8 mb flash rom, ami bios, pnp, dmi2.0, wfm2.0, sm bios 2.4, acpi 2.0a, asus ez flash 2, asus crashfree bios 3 manageability wol by pme, wor by pme, wor by ring, chassis intrusion, pxe accessories 1 x ultradma 133/100/66 cable 1 x fdd cable 2 x serial ata cables 1 x serial ata power cable for two device i/o shield user's manual support disc drivers asus express gate asus pc probe ii asus update asus ai suite anti-virus software (oem version) image-editing suite form factor uatx form factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm