Asus P4P800-X P4P800-X user's manual English version E1718 - Page 52

CPU VCore Voltage [Auto] Allows you to select a specific CPU VCore voltage. The configurations depends on the type of CPU installed. Refer to the CPU documentation before setting the CPU VCore voltage. A very high Vcore voltage may severely damage the CPU! When you set the AI Overclocking Tuner item to [Manual], the related overclocking items appear. Configure System Frequency/Voltage AI Overclock Tuner CPU Frequency DRAM Frequency AGP/PCI Frequency [Manual] [133] [Auto] [Auto] CPU VCore Voltage DDR Reference Voltage [Auto] [Auto] CPU Frequency (MHz) [XXX] (value is auto-detected) Indicates the frequency sent by the clock generator to the system bus and PCI bus. The bus frequency (external frequency) multiplied by the bus multiple equals the CPU speed. The default value of this item is auto-detected by the BIOS. The values range from 100 to 400. Use the plus (+) or minus(-) keys to adjust the CPU frequency. Refer to the following table for the correct Front Side Bus and CPU External Frequency settings. Table 2.4.1 FSB/CPU External Frequency Synchronization Front Side Bus FSB 800 FSB 533 FSB 400 CPU External Frequency 200 MHz 133 MHz 100 MHz DRAM Frequency [Auto] Allows you to set the DDR operating frequency depending on the CPU installed. Configuration options: FSB 400 CPU: [266 MHz] [Auto], FSB 533 CPU: [333 MHz] [266 MHz] [Auto], FSB 800 CPU: [400 MHz] [320 MHz] [266 MHz] [Auto] AGP/PCI Frequency (MHz) [Auto] Allows you to adjust to a higher AGP/PCI frequency for better system performance and overclocking capability. Configuration options: [Auto] [66.66/33.33] [75.00/37.50] [80.00/40.00] Selecting a very high AGP/PCI frequency may cause the system to become unstable! If this happens, revert to the default setting. 2-16 Chapter 2: BIOS information