Intel I865PE User Manual page 54

BIOS
AGP/PCI Clock
Enables you lock the AGP/PCI clock to a defined frequency or float with the host bus.
Options: Auto, By subtle tuning (lock), AGP-FSB*2/4
(FSB is 800).
Note: AGP clock is always double of PCI clock.
AGP/PCI subtle tuning
Enables you to set the locked frequency for AGP/PCI at increments of 1MHz step.
Press <Enter> to display the following screen:
Key in the DEC (decimal) number for the AGP/PCI subtle tuning.
In the following items, "Default Voltage" indicates the original factory
value, and "New Voltage" indicates the value that you assign.
CPU Vcore Voltage
This item allows you to adjust the CPU Vcore voltage.
Options: -0.100V to +0.1875V in 0.0125V increments. We recommend that you leave
this at the default value.
AGP Voltage
This item allows you to adjust the AGP slot voltage.
Options: +0.00V to +0.40V in 0.10V increments. We recommend that you leave this at
the default value.
DIMM Voltage
This item allows you to adjust the DIMM slot voltage.
Options: +0.00V to +0.30V in 0.05V increments. We recommend that you leave this at
the default value.
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AGP clock = PCI clock x 2
, AGP-FSB*1/3
(FSB is 533)