2-16
Chapter 2: BIOS information
CPU External Frequency (MHz)
(when CPU Speed is set to [Manual])
This feature tells the clock generator what frequency to send to the system bus
and PCI bus. The bus frequency (external frequency) multiplied by the bus multiple
equals the CPU speed.
Memory Frequency [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] [100MHz] [133MHz] [166MHz] [200MHz]
CPU VCore Set [Auto]
This field determines if the CPU Vcore is automatically scaled or set manually by the
user. The default for this field is [Auto], so the CPU vcore voltage is set for maximum
performance without stressing the CPU. Configuration options: [Manual] [Auto]
CPU VCore [1.750V]
(
for Willamette
)
, [1.xxxV]
(
for Northwood defined by
CPU
)
When the CPU VCore Setting parameter above is set to [Manual], the CPU VCore
item allows you to select a specific CPU core voltage. This field is not accessible
when the CPU VCore Setting is set to [Auto]. CPU core voltage options vary for both
Willamette and Northwood processors. See the following table:
Adjust Vcore [Offset 100mV]
This field is allows you to adjust the Vcore offset voltage.
Configuration options: [Offset 100mV] [Offset 200mV]
AGP Voltage Adjustment [Auto]
This field is defaulted to [Auto]. Select the voltages to increase the power output to
the AGP. Configuration options: [Auto] [1.5] [1.6] [1.7]
DDR Voltage Adjustment [Auto]
This field is defaulted to [Auto]. Select the voltages to increase the power output to
the DDR memory. Configuration options: [Auto] [2.5] [2.6] [2.7]
P4 Processor
Voltage Range
Willamette
1.750V, 1.775V, 1.800V, 1.825V, 1.850V,
Northwood
1.500V, 1.525V, 1.550V, 1.575V, 1.600V,
1.625V, 1.650V, 1.675V, 1.700V
