athlon 64x2/64/fx sempron, quad core, 4 x ddrii * 4xpci-ex16 1 x pci-ex1 2 x pci 1xata133 * 4xsataii/r gb lan 8 ch hdaudio crossfire model : k9a2 cf-f form factor: atx form factor chipset: amd 790x and sb600 chipset cpu : supp 64-bit amd athlon 64fx/athlon 64 x2/athlon 64 proc(socket am2 supp athlon 64 cpu: 3500+, 3800+ supp athlon 64fx cpu: fx-62 supp athlon 64 x2 cpu: 3800+, 4000+, 4200, 4400+, 4600+, 4800+, 5000+, 5200+, 5400+, 6000+, 6400+ mem : 4 x ddrii dimms (240pin / 1.8v), supp dual ddr ii 533/667/800 supp a maximum memory size up to 8gb. comm : realtek pci-e gblan controller 8111b, supp 10mb/s,100mb/s,1000mb/s on board ide: 1 x ide port, can connect up to two ide devices on board sata: 4xsata ii ports, supp storage & data transfers upto 300 mb raid function: sata ii 1~4 support raid 0, 1 and 0+1 mode audio : chipset integrated by realtek alc888 flexible 8-channel audio with jack sensing slots : 2 x pci express x16 slots , support ati crossfire tech (pci expres bus spec v2.0 compliant) {slot config: dual crossfire (8x+8x)} 1 x pci express x1 slot 2 x 32-bit pci slots (3.3v/5v pci bus master slots) ports : 1 x ps/2 keyboard, 1 x ps/2 mouse, 1 x serial port 1 x 6 in 1 audio jack, 4 x usb 2.0 ports 1 x rj45 lan jack, 1 x ieee1394 port (optional) mounting: 6 mounting holes dim: 305 x 220 mm (lxw)