Asus P5BV Motherboard Installation Guide - Page 82

Available DRAM frequency options in various FSB settings FSB Auto FSB 1066 • FSB 800 • DDR2533 • • DDR2667 • • Configuration options DDR2- DDR2800 889* • • • DDR21067* • * Provided for overclocking purpose only. Selecting a very high DRAM frequency may cause the system to become unstable! If this happens, revert to the default setting. The following items appear only when the AI Tuning item is set to [Manual]. CPU Frequency [200] Displays the frequency sent by the clock generator to the system bus and PCI bus. The value of this item is auto-detected by the BIOS. Use the and keys to adjust the CPU frequency. You can also type the desired CPU frequency using the numeric keypad. The values range from 100 to 400. Refer to the table below for the correct Front Side Bus and CPU External Frequency settings. FSB/CPU External Frequency Synchronization Front Side Bus FSB 1066 FSB 800 FSB 533 CPU External Frequency 266 MHz 200 MHz 133 MHz PCI Express Frequency [Auto] Allows you to select PCI Express frequency. Configuration options: [Auto] [90] [91] [92] [93]... [150] PCI Clock Synchronization Mode [Auto] Selects the PCI Clock Synchronization mode. Configuration options: [Auto] [33.33MHz] The following items appear only when the AI Tuning item is set to [Manual] or [AI N.O.S.]. 4-18 Chapter 2: BIOS setup