Asus P5B Premium Vista P5B Premium Quick Installation Guide - Page 89

N.O.S. Mode [Auto] Configuration options: [Auto] [Standard] [Sensitive] [Heavy Load] The N.O.S. Mode item only appears when you set the AI Tuning item to [AI N.O.S]. The following items appear only when you set the AI Tuning item to [Manual]. CPU Frequency [XXX] 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 650. 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 CPU External Frequency 266 MHz 200 MHz DRAM Frequency [Auto] Allows you to set the DDR operating frequency. Configuration options: Available DRAM frequency options in various FSB settings FSB Configuration options FSB 1066 FSB 800 Auto • • DDR2533 • • DDR2667 • • DDR2800 • • DDR2889* • DDR21067* • * Provided for overclocking purpose only. A very high DRAM frequency may cause the system to become unstable! If this happens, revert to the default setting. The DRAM Frequency item also appears when you set the AI Tuning item to [AI N.O.S]. PCI Express Frequency [Auto] Allows you to set the PCI Express frequency. This item is set to [Auto] by default. Configuration options: [Auto] [90] [91] ~ [149] [150] PCI Clock Synchronization [Auto] Allows you to synchronize the PCI frequency with the PCI Express or CPU frequency. Configuration options: [Auto] [33.33MHz] ASUS P5B Premium Series 4-17