Full Details from Amazon.com : http://www.amazon.com/gp/product/B0030BERLO?tag=onigi-20Gigabyte AMD AM3 Phenom II/Socket AM3/AMD 790X/4DDR3-1866(OC)/ATI CrossFireX/GbE/7.1-CH ATXMAX-16GB DDR3 ATX 4PCIE16 3PCI LAN