Asus P5QLD PRO: CPU features

Chapter summary

A

®

A.1 Intel

EM64T ..................................................................................A-1

®

A.2 Enhanced Intel SpeedStep

Technology (EIST) ........................A-1

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A.3 Intel

Hyper-Threading Technology ...........................................A-3

ASUS P5QLD PRO

®

A.1 Intel

EM64T

®

• The motherboard is fully compatible with Intel

LGA775 processors running

on 32-bit operating systems.

• The motherboard comes with a BIOS le that supports EM64T. You can

download the latest BIOS file from the ASUS website (www.asus.com/

support/download/) if you need to update the BIOS le. See Chapter 4 for

details.

• Visit www.intel.com for more information on the EM64T feature.

®

• Visit www.microsoft.com for more information on Windows

64-bit OS.

®

Using the Intel

EM64T feature

®

To use the Intel

EM64T feature:

®

®

1. Install an Intel

CPU that supports the Intel

EM64T.

®

®

2. Install a 64-bit operating system (Windows

Vista 64-bit Edition or Windows

XP Professional x64 Edition).

3. Install the 64-bit drivers for the motherboard components and devices from

the support CD.

4. Install the 64-bit drivers for expansion cards or add-on devices, if any.

Refer to the expansion card or add-on device(s) documentation, or visit the

related website, to verify if the card/device supports a 64-bit system.

®

A.2 Enhanced Intel SpeedStep

Technology (EIST)

• The motherboard comes with a BIOS file that supports EIST. You can

download the latest BIOS file from the ASUS website (www.asus.com/

support/download/) if you need to update the BIOS. See Chapter 4 for

details.

• Visit www.intel.com for more information on the EIST feature.

A.2.1 System requirements

Before using EIST, check your system if it meets the following requirements:

®

• Intel

processor with EIST support

• BIOS le with EIST support

®

®

• Operating system with EIST support (Windows

Vista, Windows

XP SP2/

Linux 2.6 kernel or later versions)

ASUS P5QLD PRO A-1

A.2.2 Using the EIST

To use the EIST feature:

1. Turn on the computer, then enter the BIOS Setup.

2. Go to the

Advanced

Menu, highlight

CPU Configuration

, then press

<Enter>

.

3. Set the

Intel(R) SpeedStep Technology

item to

[Enabled]

, then press

<Enter>

. See page 4-24 for details.

4. Press

<F10>

to save your changes and exit the BIOS setup.

5. After the computer restarts, right click on a blank space on the desktop, then

select

Properties

from the pop-up menu.

6. When the

Display Pr operties

window appears, click the

Screen

Saver

tab.

7. Click the

Power

button on the

Monitor power

section to open

the

Power Options Properties

window.

8. On the

Power schemes

section,

click , then select any option

except

Home/Office Desktop

or

Always On

.

9. Click

Apply

, then click

OK

.

10. Close the

Displa y Properties

window.

After you adjust the power scheme,

the CPU internal frequency slightly

decreases when the CPU loading is

low.

The screen displays and procedures may vary depending on the operating

system.

A-2 Appendix: CPU features

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A.3 Intel

Hyper-Threading Technology

®

®

• The motherboard supports Intel

Pentium

4 LGA775 processors with

Hyper-Threading Technology.

®

• Hyper-Threading Technology is supported under Windows

Vista/XP/Linux

2.4.x (kernel) and later versions only. Under Linux, use the Hyper-Threading

compiler to compile the code. If you are using any other operating systems,

disable the Hyper-Threading Technology item in the BIOS to ensure system

stability and performance.

®

• Installing Windows

XP Service Pack 1 or later version is recommended.

• Make sure to enable the Hyper-Threading Technology item in BIOS before

installing a supported operating system.

• For more information on Hyper-Threading Technology, visit www.intel.com/

info/hyperthreading.

Using the Hyper-Threading Technology

To use the Hyper-Threading Technology:

®

®

1. Install an Intel

Pentium

4 CPU that supports Hyper-Threading Technology.

2. Power up the system and enter the BIOS Setup. Go to

Advanced

> CPU

Conguration

, ensure that the

Hyper-Threading Technology

item is set to

[Enabled

].

The B IOS ite m appea rs only if you install ed a CPU that supports

Hyper-Threading Technology.

3. Restart the computer.

ASUS P5QLD PRO A-3

A-4 Appendix: CPU features