American Megatrends MegaDual, User Manual

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Chapter 2 AMIBIOS Setup 77
Section 3 Chipset Setup
Choose Chipset Setup from the AMIBIOS Setup Utility main menu. The screen is shown
below. All Chipset Setup options are described following the screen.
BIOS SETUP UTILITY
Main Advanced Chipset PCIPnP Power Boot Security
Exit
Processor Serial Number Disabled
CPU Frequency Ratio 1:2
Watch Dog Timer Disabled
Graphics Aperture Size 64MB
Memory ECC Mode Disabled
↔
Select Screen
↑↓
Select Item
+- Change Option
F1 General Help
F8 Load Failsafe
F9 Load Optimal
F10 Save and Exit
ESC Exit
©Copyright 1985-1999, American Megatrends, Inc.
Processor Serial Number Set this option to Enabled to allow the operating system and applications to be
able to read the CPU serial number from your CPUs. The Optimal and Failsafe settings are
Disabled .
CPU Frequency The CPU frequency setting is the ratio between the external clock bus, and the CPU core
frequency. CPUs are marked with core frequency. For example, a 400 MHz/133 FSB CPU
has a core frequency of 400 MHz, and an external bus frequency of 133 MHz. In this case,
you would select a ratio of
1:3 (133.33 x 3 = 400). The settings are 1:2, 1:4, 1:3, 1:5, 2:5,
2:9, 2:7, 2:11, 1:6, 1:8, 1:7, 2:13, 2:3, 2:15, or 1:2.
Caution
Do not overclock CPUs.
Some CPUs have a fixed clock ratio that cannot be changed.
For these CPUs, this option does not appear on the screen.
Cont’d