Gigabyte GA-Z97X-GAMING 5 LGA 1150 Z97 115dB SNR HD Audio with Built-In Rear Audio Amplifier ATX Motherboard LGA1150 Chipset: Intel Z97 Express Memory: 4x DDR3-3200(OC)/ 3100(OC)/ 3000(OC)/ 2933(OC)/ 2800(OC)/ 2666(OC)/ 2600(OC)/ 2500(OC)/ 2400(OC)/ 2200(OC)/ 2133(OC)/ 2000(OC)/ 1866(OC)/ 1800(OC)/ 1600/ 1333 DIMM Slots, Dual Channel, Non-ECC, Max Capacity of 32GB Slots: 3x PCI-Express 3.0 x16 Slots (one runs at x8, one runs at x4), 3x PCI-Express 2.0 x1 Slots, 1x PCI Slot Multi-Graphics: Supports 3-Way/2-Way AMD Crossfire and 2-Way NVIDIA SLI Technology Audio: Support for Sound Blaster X-Fi MB3 Support for 3-Way/2-Way AMD CrossFire/2-Way NVIDIA SLI Technology GIGABYTE UEFI DualBIOS.