ATX - 1 x Processor Support - 64 GB DDR4 SDRAM Maximum RAM - 3 GHz O.C., 2.80 GHz O.C., 3.67 GHz O.C., 3.60 GHz O.C., 3.87 GHz O.C., 3.80 GHz O.C., 3.73 GHz O.C., 2.40 GHz, 3.20 GHz O.C., 4 GHz O.C., 3.33 GHz O.C., ... ... Memory Speed Supported - DIMM, UDIMM - 4 x Memory Slots - Intel Optane Memory Ready - Serial ATA/600 RAID Supported Controller - 10, 5, 1, 0 RAID Levels - CPU Dependent Video - HDMI - 7.1 Audio Channels - Gigabit Ethernet - 3 x PCI Express x1 Slots - 3 - 8 - 2 - 6