ASUS has once again employed an American Megatrends Inc BIOS for the P5B Deluxe motherboard. We had used the AMIBIOS 0614 with a build date of September 5, 2006. From the advanced area, the system frequency and voltage can be manipulated. Using manual AI tuning, the CPU frequency can be adjusted from 100MHz to 650MHz. Other options are DRAM frequency, PCI Express frequency, PCI clock synchronization mode, memory voltage, CPU core voltage, FSB termination voltage, Northbridge core voltage, Southbridge core voltage, and ICH Chipset voltage. The CPU vCore can be adjusted in 0.00625V increments and there are 13 possible adjustments for the vDIMM and five steps for the Chipset. The hardware monitor supports monitoring the CPU temperature, motherboard temperature, CPU fan speed, three chassis fan speeds, power fan speed, Vcore voltage, 3.3V voltage, 5V voltage, and 12V voltage. This hardware-monitoring page also supports controlling the ASUS Q-Fan.