ASRock ATX DDR3 1066 LGA 1150 Motherboards Z97 EXTREME6/3.1 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: 3x PCI-Express 3.0 x16 Slots (run at x16 or x8/x8 or x8/x4/x4), 3x PCI-Express 2.0 x1 Slots Multi-Graphics: Supports AMD Quad CrossFireX, 3-Way CrossFireX, CrossFireX and NVIDIA Quad SLI, SLI Technology LAN: Intel I218V GigabitEthernet Controller Form Factor: ATX