of this motherboard. If it shows “Locked”, then the item Ratio CMOS Set- ting will be hidden. If you use the ratio value to time the CPU frequency, it will be equal to the core speed of the installed processor.

Ratio Actual Value

This is a read-only item, which displays the ratio actual value of this motherboard.

CPU Thermal Throttling

You may select [Enabled] to enable P4 CPU internal thermal control mecha- nism to keep the CPU from overheated.

Hyper Threading Technology

To enable this feature, it requires a computer system with an Intel Pentium®4 processor that supports Hyper-Threading technology and an operating sys- tem that includes optimization for this technology, such as Microsoft® Win- dows® XP. Set to [Auto] if using Microsoft® Windows® XP, or Linux kernel version 2.4.18 or higher. This option will be hidden if the installed CPU does not support Hyper-Threading technology.

Max CPUID Value Limit

For Prescott CPU only, some OSes (ex. NT4.0) cannot handle the function with disable. This should be enabled in order to boot legacy OSes that cannot support CPUs with extended CPUID functions.

3.3.2 Chipset Configuration

BIOS SETUP UTILITY

Advanced

Chipset Configuration

Bypass Access

[Off]

DRAM Frequency

[Auto]

Flexibility Option

[Disabled]

Configure DRAM Timing by SPD

[Disabled]

DRAM CAS# Latency

[Auto]

DRAM RAS# Precharge

[4 Clocks]

DRAM RAS# to CAS# Delay

[4 Clocks]

DRAM Precharge Delay

[8 Clocks]

DRAM Burst Length

[4]

Memory Hole

[Disabled]

Init. Graphic Adapter Priority

[PCI / AGP]

Graphics Aperture Size

[64MB]

OnBoard LAN

[Enabled]

OnBoard AC'97 Audio

[Auto]

Options

133MHz (DDR266) 166MHz (DDR333) 200MHz (DDR400) Auto

 

Select Screen

 

Select Item

+ -

Change Option

F1

General Help

F9

Load Defaults

F10

Save and Exit

ESC

Exit

v02.54 (C) Copyright 1985-2003, American Megatrends, Inc.

Bypass Access

This technology can provide users with the function of increasing the sys- tem performance. The default value is [Disabled]. It will only work when you use FSB800 CPU and DDR400 DRAM at the same time; otherwise, this option will be hidden.

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ASRock p4i65pe manual Chipset Configuration