Asus P4P800-X User Manual 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
CPU VCore Voltage
DDR Reference Voltage
CPU Frequency (MHz) [XXX]
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
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
[Manual]
[133]
[Auto]
[Auto]
[Auto]
[Auto]
(value is auto-detected)
CPU External Frequency
200 MHz
133 MHz
100 MHz
Chapter 2: BIOS information