The P5QC is an Intel P45 chipset-based motherboard that combines powerful performance with great energy efficiency; and supports DDR3 1333 MHz or DDR2 1066 MHz dual-channel memory architecture and PCI Express 2.0 x16 for extreme graphics performance. It also comes with the worlds first ASUS EPU (Energy Processing Unit) allowing the CPU power supply to be digitally monitored and fine-tuned with improved VRM efficiency in heavy or light loadings attaining the best possible power efficiency and energy savings to help save the environment. The P5QC also supports ASUS Express Gate an optional Linux OS bootup for instant access to the Internet in 5 seconds.