Asus P5QL: 2.4 Ai Tweaker menu

Hard Disk Write Protect [Disabled]

Disables or enables device write protection. This will be effective only if device is accessed

through BIOS. Conguration option: [Disabled] [Enabled]

IDE Detect Time Out (Sec) [35]

Selects the time out value for detecting ATA/ATAPI devices.

Conguration options: [0] [5] [10] [15] [20] [25] [30] [35]

2.3.6 System Information

This menu gives you an overview of the general system specications. The BIOS

automatically detects the items in this menu.

Bios Information

Displays the auto-detected BIOS information.

Processor

Displays the auto-detected CPU specication.

System Memory

Displays the auto-detected system memory.

2.4 Ai Tweaker menu

The Ai Tweaker menu items allow you to congure system performance settings. Select an

item then press <Enter> to display the conguration options.

Take caution when changing the settings of the Ai Tweaker menu items. Incorrect eld

values can cause the system to malfunction.

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

Congure System Performance Settings

Options

Ai Overclock Tuner [Auto]

FSB Strap to North Bridge [Auto]

DRAM Frequency [Auto]

Manual

DRAM Timing Control [Auto]

Auto

1st Information: 5-5-5-15-3-36-5-3

2nd Information: 8-3-5-4-6-4-6

3rd Information: 13-5-1-5-5

DRAM Static Read Control [Auto]

DRAM Read Training [Auto]

MEM. OC Charger [Auto]

Ai Clock Twister [Auto]

Ai Transaction Booster [Auto]

C/P: A1 A2 A3 A4

Select Screen

LVL: 09 09 09 09

Select Item

********Please Key in numbers directly!********

+- Change Field

F1 General Help

CPU Voltage [Auto]

F10 Save and Exit

FSB Termination Voltage [Auto]

ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

Scroll down to display the following items:

Memory Voltage [Auto]

North Bridge Voltage [Auto]

South Bridge Voltage [Auto]

**************************************************

CPU GTL Reference [Auto]

CPU Spread Spectrum [Auto]

PCIE Spread Spectrum [Auto]

CPU Clock Skew [Auto]

NB Clock Skew [Auto]

CPU Margin Enhancement [Optimized]

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

ASUS P5QL 2-11

Ai Overclock Tuner [Auto]

Allows selection of CPU overclocking options to achieve desired CPU internal frequency.

Select either one of the preset overclocking conguration options:

Manual - allows you to manually set overclocking parameters.

Auto - loads the optimal settings for the system.

The follow items appear only when you set the [Ai Overclock Tuner] item to [Manual].

FSB Frequency [xxx]

Displays the frequency sent by the clock generator to the system bus and PCI bus.

Use the <+> and <-> keys to adjust the FSB frequency. You can also type the desired

FSB frequency using the numeric keypad. The values range from 200 to 600. Refer to

the table below for the correct Front Side Bus and CPU External Frequency settings.

FSB / CPU External Frequency Synchronization

Front Side Bus CPU External Frequency

FSB 1600 400 MHz

FSB 1333 333 MHz

FSB 1066 266 MHz

FSB 800 200 MHz

FSB 533 133 MHz

PCIE Frequency [Auto]

Use the <+> and <-> keys to adjust the PCIE frequency. You can also type the desired

PCIE frequency using the numeric keypad. The values range from 100 to 160.

FSB Strap to North Bridge [Auto]

Allows you to adjust the FSB strap. Conguration options: [Auto] [200MHz] [266MHz]

[333MHz] [400MHz]

DRAM Frequency [Auto]

Allows you to set the DDR2 operating frequency. Conguration options: [Auto]

[DDR2-533MHz] [DDR2-639MHz] [DDR2-667MHz] [DDR2-709MHz] [DDR2-800MHz]

[DDR2-852MHz] [DDR2-887MHZ] [DDR2-1066MHz]

Setting a very high DRAM frequency may cause the system to become unstable. If this

happens, revert to the default settings.

DRAM Timing Control [Auto]

Allows selection of the DRAM timing conguration. Conguration options: [Auto] [Manual]

• The following items appear only when you set the [DRAM Timing Control] item to

[Manual].

• The conguration options for some of the following items vary depending on the DIMMs

you install on the motherboard.

2-12 Chapter 2: BIOS information

1st Information: 5-5-5-15-3-36-5-3

CAS# Latency [5 DRAM Clocks]

Conguration options: [3 DRAM Clocks] ~ [11 DRAM Clocks]

DRAM RAS# to CAS# Delay [5 DRAM Clocks]

Conguration options: [3 DRAM Clocks] ~ [18 DRAM Clocks]

DRAM RAS# Precharge [5 DRAM Clocks]

Conguration options: [3 DRAM Clocks] ~ [18 DRAM Clocks]

RAS# Activate to Precharge [15 DRAM Clocks]

Conguration options: [3 DRAM Clocks] ~ [34 DRAM Clocks]

RAS# to RAS# Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

Row Refresh Cycle Time [Auto]

Conguration options: [Auto] [20 DRAM Clocks] [25 DRAM Clocks]

[30 DRAM Clocks] [35 DRAM Clocks] [40 DRAM Clocks] [45 DRAM Clocks] [50 DRAM

Clocks] [55 DRAM Clocks] [60 DRAM Clocks] [65 DRAM Clocks] [70 DRAM Clocks]

[80 DRAM Clocks] [85 DRAM Clocks] [105 DRAM Clocks] [132 DRAM Clocks]

Write Recovery Time [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

Read to Precharge Time [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

2nd Information: 8-3-5-4-6-4-6

READ to WRITE Delay (S/D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

WRITE to READ Delay (S) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

WRITE to READ Delay (D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

READ to READ Delay (S) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

READ to READ Delay (D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

WRITE to WRITE Delay (S) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

WRITE to WRITE Delay (D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

3rd Information: 13-5-1-5-5

WRITE to PRE Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [31 DRAM Clocks]

READ to PRE Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

PRE to PRE Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [3 DRAM Clocks]

ALL PRE to ACT Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

ALL PRE to REF Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] ~ [15 DRAM Clocks]

ASUS P5QL 2-13

DRAM Static Read Control [Auto]

Adjusting this item might enhance DRAM overclocking ability.

Conguration options: [Auto] [Disabled] [Enabled]

DRAM Read Training [Auto]

Adjusting this item might enhance DRAM overclocking ability.

Conguration options: [Auto] [Disabled] [Enabled]

MEM. OC Charger [Auto]

Adjusting this item might enhance DRAM overclocking ability.

Conguration options: [Auto] [Disabled] [Enabled]

Ai Clock Twister [Auto]

Allows you to set the DRAM performance. Set this item to [Light] or [Lighter] to enhance

DRAM compatibility, or [Strong] or [Stronger] to accelerate DRAM performance.

Conguration options: [Auto] [Lighter] [Light] [Moderate] [Strong] [Stronger]

Ai Transaction Booster [Auto]

Allows you to set the system performance. Conguration options: [Auto] [Manual]

The following items appear only when you set the Ai Transaction Booster item to

[Manual].

C/P: A1 A2 A3 A4

LVL: 09 09 09 09

Common Performance Level [05]

Set this item to a higher level for better compatibility or a lower level for better

performance. Use the <+> and <-> keys to adjust the value.

Pull-In of CHA/B PH1/2/3/4 [Disabled]

Set this item to [Enabled] to apply enhancement on DRAM Channel A and B, Phase

1 to 4. The number of phases is determined by DRAM frequency and FSB strap.

Conguration options: [Disabled] [Enabled]

CPU Voltage [Auto]

Allows you to set the CPU VCore voltage. The values range from 0.8500V to 1.7500V with a

0.00625V interval. Conguration options: [Auto]

Refer to the CPU documentation before setting the CPU Vcore voltage. Setting a high

VCore voltage may damage the CPU permanently, and setting a low VCore voltage may

make the system unstable.

FSB Termination Voltage [Auto]

Allows you to set the front side bus termination voltage. The values range from 1.20V to

1.50V with a 0.10V interval.

The minimum value becomes 1.10V and the maximum value becomes 1.40V when a 45nm

CPU is detected.

2-14 Chapter 2: BIOS information

Memory Voltage [Auto]

Allows you to set the memory voltage manually or Auto. Use the <+> and <-> keys to adjust

the value. The value ranges from 1.80V to 2.20V with a 0.10V interval.

North Bridge Voltage [Auto]

Allows you to set the NB voltage manually or Auto. Use the <+> and <-> keys to adjust the

value. The value ranges from 1.10V to 1.40V with a 0.10V interval.

Setting a very high voltage may damage the component permanently, and setting a very

low voltage may cause the system to become unstable.

South Bridge Voltage [Auto]

Allows you to set the SB voltage. The value ranges from 1.50V to 1.70V with a 0.20V interval.

CPU GTL Reference [Auto]

Allows you to set the CPU GTL voltage reference. Conguration options: [Auto] [0.667x]

[0.65x] [0.63x] [0.615x]

CPU Spread Spectrum [Auto]

Allows you to set the CPU spread spectrum. Conguration options: [Auto] [Disabled]

PCIE Spread Spectrum [Auto]

Allows you to set the PCIE spread spectrum. Conguration options: [Auto] [Disabled]

CPU Clock Skew [Auto]

Allows you to set the CPU clock skew. Conguration options: [Auto] [Normal] [Delay 75ps]

[Delay 150ps] [Delay 225ps] [Delay 300ps] [Delay 375ps] [Delay 450ps] [Delay 525ps]

[Delay 600ps] [Delay 675ps] [Delay 750ps] [Delay 825ps] [Delay 900ps] [Delay 975ps]

[Delay 1050ps] [Delay 1100ps]

NB Clock Skew [Auto]

Allows you to set the NB clock skew. Conguration options: [Auto] [Normal] [Delay 75ps]

[Delay 150ps] [Delay 225ps] [Delay 300ps] [Delay 375ps] [Delay 450ps] [Delay 525ps]

[Delay 600ps] [Delay 675ps] [Delay 750ps] [Delay 825ps] [Delay 900ps] [Delay 975ps]

[Delay 1050ps] [Delay 1100ps]

CPU Margin Enhancement [Optimized]

Conguration options: [Optimized] [Compatible]

ASUS P5QL 2-15