Asus P4B533 - Manual (Page 86)

4-18 Chapter 4: BIOS Setup
CPU/Memory Frequency Ratio [Auto]
This field determines whether the memory clock frequency is set to be in
synchronous or asynchronous mode with respect to the system frequency.
The options that appear in the popup menu vary according to the CPU
Frequency (MHz). Configuration options: [Auto] [1:1] [3:4]
AGP/PCI Frequency Setting [Auto]
When set to [Auto], this field allows automatic selection of AGP/PCI
frequency to enhance system performance and overclocking capability.
The setting [Manual] allows you to manually select the AGP/PCI
frequency. If the system becomes unstable, return to the default setting
[Auto]. When this item is set to [Manual], the
AGP/PCI Frequency (MHz)
item appears. Configuration options: [Auto] [Manual]
Selecting a very high AGP/PCI frequency may cause the system to be
unstable!
CPU VCore Setting [Auto]
The [Manual] setting allows you to manually select the core voltage
supplied to the CPU (see next item). However, it is recommended that you
keep the default setting [Auto] to allow the system to automatically
determine the appropriate CPU core voltage.
AGP/PCI Frequency (MHz) [66.66/33.33]
This item appears only when the AGP/PCI Frequency Setting is set to
[Manual]. This field allows you to select a higher AGP/PCI frequency for
better system performance.