5-20
Chapter 5: BIOS setup
FSB/CPU External Frequency Synchronization
Front Side Bus
CPU External Frequency
FSB 1066
266 MHz
FSB 800
200 MHz
FSB 533
133 MHz
DRAM Frequency [Auto]
Allows you to set the DDR2 operating frequency.
Configuration options: [Auto] [DDR2-400MHz] [DDR2-533MHz]
[DDR-667MHz]
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
The following item appears only when you set the AI Overclocking item
to [Manual].
CPU Frequency [200]
Displays the frequency sent by the clock generator to the system bus. The
value of this item is auto-detected by the BIOS. The values range from 200
to 450.
PCI Express Frequency [Auto]
Allows you to set the PCI Express frequency. This item is set to [Auto] by
default. Configuration options: [Auto] [90]...[150]
CPU VCore Voltage [Auto]
Sets the operating VCore voltage. Configuration options: [Auto]
[1.6000V] [1.5875V] [1.5750V] [1.5625V] [1.5500V] [1.5375V]
[1.5250V] [1.5125V] [1.5000V] [1.4875V] [1.4750V] [1.4625V]
[1.4500V] [1.4375V] [1.4250V] [1.4125V] [1.4000V] [1.3875V]
[1.3750V] [1.3625V] [1.3500V] [1.3375V] [1.3250V] [1.3125V]
[1.3000V] [1.2875V]
• Setting to a very high CPU VCore voltage can damage the CPU or
may cause the system to become unstable. If this happens, revert
to default settings.
• The configuration options may vary depending on the CPU you
installed.
