Gigabyte LGA 1150 Intel Z97 Motherboards GA-Z97-HD3P CPU: LGA 1150 Intel core i7/i5/i3/Pentium/Celeron processors Memory DIMMs: 4 x DDR3 DIMMs supporting up to 32 GB of memory; DDR3 3100(O.C.) / 3000(O.C.) / 2933(O.C.) / 2800(O.C.) / 2666(O.C.) / 2600(O.C.) / 2500(O.C.) / 2400(O.C.) / 2200(O.C.) / 2133(O.C.) / 2000(O.C.) / 1866(O.C.) / 1800(O.C.) / 1600 / 1333 MHz 1 x D-Sub port, supporting a maximum resolution of 1920x1200at60Hz 1 x DVI-D port, supporting a maximum resolution of 1920x1200at60Hz 1 x HDMI port, supporting a maximum resolution of 4096x2160at24Hz or 2560x1600at60Hz Expansion Slots:1 x PCI Express x16 slot, running at x16; 1 x PCI Express x16 slot, running at x4; 2 x PCI Express x1 slots; 2 x PCI slots Support for 2-Way AMD Crossfire technology 6 x USB 3.0/2.0 ports ; 8 x USB 2.0/1.1 ports