Asrock X79 Extreme9. Supported memory types: DDR3-SDRAM, Memory channels support: quad, Supported memory clock speeds: 1066, 1333, 1600, 1866, 2133, 2400 MHz. Processor family: Intel, Compatible processor series: Core i7, Core i7 Extreme Edition, Processor socket: LGA2011. Audio output channels: 7.2, Audio system: Creative Sound Core3D. PCI Express slots version: 3.0. Width: 305 mm, Depth: 244 mm