ASRock ATX DDR3 1066 LGA 1150 Motherboards Z97 Killer/3.1 LGA1150 Chipset: Intel Z97 Memory: 4x DDR3-3200+(OC)/ 2933(OC)/ 2800(OC)/ 2400(OC)/ 2133(OC)/ 1866(OC)/ 1600/ 1333/ 1066 DIMM Slots, Dual Channel, Non-ECC, Unbuffered, Max Capacity of 32GB Slots: 1x PCI-Express 3.0 x16 Slot, 1x PCI-Express 2.0 x16 Slot (runs at x4), 2x PCI-Express 2.0 x1 Slots, 2x PCI Slots Multi-Graphics: Supports AMD Quad CrossFireX and CrossFireX Technology Power Connector: 1x 24pin ATX Power Connector, 1x 8pin 12V Power Connector Form Factor: ATX