ABIT AX8 Motherboard with IEEE1394 and Gigabit LAN Powered by VIA K8T890/VT8237 chipsets based on AMD Athlon 64/64FX Socket 939 CPU Features SATA RAIDm Dual DDR400, PCI Express, IEEE1394, and Gigabit LAN--including ABIT-engineered Guru for optimum overall system Hyper Transport Technology: 2 GHz effective system bus for high-speed, low-latency communication between integrated circuits Coaxial digital-audio input and output (permits 5.1-channel audio passthrough to compatible surround decoder) ABIT ThermalGuard technology keeps your CPU from overheating in case of any hardware-cooling malfunction