User's Manual
Table Of Contents
- Contents
- Chapter 1: Product introduction
- Chapter 2: Hardware information
- Chapter 3: Powering up
- Chapter 4: BIOS setup
- 4.1 Managing and updating your BIOS
- 4.2 BIOS setup program
- 4.3 Main menu
- 4.4 Ai Tweaker menu
- 4.4.1 Ai Overclock Tuner [Auto]
- 4.4.2 CPU Ratio Setting [Auto]
- 4.4.3 FSB Strap to North Bridge [Auto]
- 4.4.4 DRAM Frequency [Auto]
- 4.4.5 DRAM Command Rate [Auto]
- 4.4.6 DRAM CMD Skew on Channel A/B [Auto]
- 4.4.7 DRAM CLK Skew on Channel A/B [Auto]
- 4.4.8 DRAM Timing Control [Auto]
- 4.4.9 DRAM Static Read Control [Auto]
- 4.4.10 DRAM Dynamic Write Control [Auto]
- 4.4.11 Ai Clock Twister [Auto]
- 4.4.12 Ai Transaction Booster [Auto]
- 4.4.13 CPU Voltage [Auto]
- 4.4.14 CPU PLL Voltage [Auto]
- 4.4.15 FSB Termination Voltage [Auto]
- 4.4.16 DRAM Voltage [Auto]
- 4.4.17 NB Voltage [Auto]
- 4.4.18 SB Voltage [Auto]
- 4.4.19 Clock Over-Charging Voltage [Auto]
- 4.4.20 Load-Line Calibration [Auto]
- 4.4.21 CPU GTL Voltage Reference [Auto]
- 4.4.22 NB GTL Voltage Reference [Auto]
- 4.4.23 CPU Spread Spectrum [Auto]
- 4.4.24 PCIE Spread Spectrum [Auto]
- 4.5 Advanced menu
- 4.6 Power menu
- 4.7 Boot menu
- 4.8 Tools menu
- 4.9 Exit menu
- Chapter 5: Software support
- Chapetr 6: ATI® CrossFire™ technology support
- Appendix: CPU features

4-26 Chapter 4: BIOS setup
CPU Ratio Setting [Auto]
This item allows you to set the ratio between CPU Core Clock and FSB Frequency.
The value is adjusted by typing the desired values using the numeric keypad and
press the <Enter> key. You can also use the <+> and <-> keys to adjust the value.
To restore the default setting, type [auto] using the keyboard and press the <Enter>
key. If an invalid ratio is set in CMOS, then actual and setpoint values may differ.
C1E Support [Enabled]
Allows you to enable or disable Enhanced Halt State support.
Conguration options: [Disabled] [Enabled]
CPU TM function [Enabled]
This function enables the overheated CPU to throttle the clock speed to cool down.
Conguration options: [Disabled] [Enabled]
Vanderpool Technology [Enabled]
The Vanderpool Technology allows a hardware platform to run multiple operating
systems separately and simultaneously, enabling one system to virtually function
as several systems.
Conguration options: [Disabled] [Enabled]
Execute Disable Bit [Enabled]
Allows you to enable or disable the No-Execution Page Protection Technology.
Setting this item to [Disabled] forces the XD feature ag to always return to zero
(0).
Conguration options: [Disabled] [Enabled]
Max CPUID Value Limit [Disabled]
Setting this item to [Enabled] allows legacy operating systems to boot even without
support for CPUs with extended CPUID functions.
Conguration options: [Disabled] [Enabled]
The following item appears only when you set the CPU Ratio Setting item to
[Auto]
Intel(R) SpeedStep (TM) Tech. [Enabled]
When set to [Disabled], the CPU runs at its default speed. When set to [Enabled],
the CPU speed is controlled by the operating system.
Conguration options: [Enabled] [Disabled]