Asus P5N73-AM User manual

Motherboard

P5N73-AM

ii

E4401

Second Edition V2

January 2009

No part of this manual, including the products and software described in it, may be reproduced,

transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any

means, except documentation kept by the purchaser for backup purposes, without the express written

permission of ASUSTeK Computer Inc. (“ASUS”).

Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless

such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the

product is defaced or missing.

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS

OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS

DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,

INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,

LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),

EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY

DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR

INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,

AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO

RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS

MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Products and corporate names appearing in this manual may or may not be registered trademarks or

copyrights of their respective companies, and are used only for identication or explanation and to the

owners’ benet, without intent to infringe.

iii

Contents

Notices ......................................................................................................... vi

Safety information ..................................................................................... vii

About this guide ........................................................................................ vii

P5N73-AM specications summary .......................................................... ix

Chapter 1: Product introduction

1.1 Welcome! ...................................................................................... 1-1

1.2 Package contents ......................................................................... 1-1

1.3 Special features ............................................................................ 1-1

1.3.1 Product highlights ........................................................... 1-1

1.3.2 ASUS special features .................................................... 1-3

1.4 Before you proceed ..................................................................... 1-4

1.5 Motherboard overview ................................................................. 1-5

1.5.1 Placement direction ........................................................ 1-5

1.5.2 Screw holes .................................................................... 1-5

1.5.3 Motherboard layout ......................................................... 1-6

1.5.4 Layout contents ............................................................... 1-6

1.6 Central Processing Unit (CPU) ................................................... 1-7

1.6.1 Installing the CPU ........................................................... 1-7

1.6.2 Installing the CPU heatsink and fan ................................ 1-9

1.6.3 Uninstalling the CPU heatsink and fan ..........................1-11

1.7 System memory ......................................................................... 1-11

1.7.1 Overview ........................................................................1-11

1.7.2 Memory congurations .................................................. 1-12

1.7.3 Installing a DIMM .......................................................... 1-15

1.7.4 Removing a DIMM ........................................................ 1-15

1.8 Expansion slots .......................................................................... 1-16

1.8.1 Installing an expansion card ......................................... 1-16

1.8.2 Conguring an expansion card ..................................... 1-16

1.8.3 PCI slots ........................................................................ 1-16

1.8.4 PCI Express x1 slot ....................................................... 1-16

1.8.5 PCI Express x16 slot ..................................................... 1-17

1.9 Jumpers ...................................................................................... 1-17

1.10 Connectors ................................................................................. 1-18

1.10.1 Rear panel ports ........................................................... 1-18

1.10.2 Internal connectors ....................................................... 1-19

iv

Contents

1.11 Software support ........................................................................ 1-26

1.11.1 Installing an operating system ...................................... 1-26

1.11.2 Support DVD information .............................................. 1-26

Chapter 2: BIOS information

2.1 Managing and updating your BIOS ............................................ 2-1

2.1.1 Creating a bootable oppy disk ....................................... 2-1

2.1.2 ASUS Update utility ........................................................ 2-2

2.1.3 ASUS EZ Flash 2 utility ................................................... 2-3

2.1.4 AwardBIOS Flash Utility .................................................. 2-4

2.1.5 ASUS CrashFree BIOS 2 utility ...................................... 2-5

2.2 BIOS setup program .................................................................... 2-6

2.2.1 BIOS menu screen .......................................................... 2-7

2.2.2 Menu bar ......................................................................... 2-7

2.2.3 Legend bar ...................................................................... 2-8

2.2.4 Menu items ..................................................................... 2-8

2.2.5 Submenu items ............................................................... 2-8

2.2.6 Conguration elds ......................................................... 2-8

2.2.7 Pop-up window ............................................................... 2-8

2.2.8 General help ................................................................... 2-8

2.3 Main menu .................................................................................... 2-9

2.3.1 System Time ................................................................... 2-9

2.3.2 System Date ................................................................... 2-9

2.3.3 Language ........................................................................ 2-9

2.3.4 Legacy Diskette A ........................................................... 2-9

2.3.5 Primary IDE Master/Slave ............................................. 2-10

2.3.6 SATA 1-4 ........................................................................2-11

2.3.7 HDD SMART Monitoring ................................................2-11

2.3.8 Installed Memory ............................................................2-11

2.3.9 Usable Memory ..............................................................2-11

2.4 Advanced menu ......................................................................... 2-12

2.4.1 JumperFree ................................................................... 2-12

2.4.2 CPU Conguration ........................................................ 2-14

2.4.3 Chipset .......................................................................... 2-14

2.4.4 PCIPnP ......................................................................... 2-15

2.4.5 Onboard Device Conguration ...................................... 2-15

2.4.6 USB Conguration ........................................................ 2-16

v

Contents

2.5 Power menu ................................................................................ 2-17

2.5.1 ACPI Suspend Type ...................................................... 2-17

2.5.2 ACPI APIC Support ....................................................... 2-17

2.5.3 APM Conguration ........................................................ 2-17

2.5.4 Hardware Monitor ......................................................... 2-19

2.6 Boot menu .................................................................................. 2-20

2.6.1 Boot Device Priority ...................................................... 2-20

2.6.2 Removable Drives ......................................................... 2-20

2.6.3 Boot Settings Conguration ......................................... 2-20

2.6.5 Security ......................................................................... 2-21

2.7 Tools menu ................................................................................. 2-22

2.8 Exit menu .................................................................................... 2-23

vi

Notices

Federal Communications Commission Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received including interference that may cause

undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with manufacturer’s instructions, may cause harmful interference

to radio communications. However, there is no guarantee that interference will not occur

in a particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the user

is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which the receiver is

connected.

• Consult the dealer or an experienced radio/TV technician for help.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from

digital apparatus set out in the Radio Interference Regulations of the Canadian Department

of Communications.

This class B digital apparatus complies with Canadian ICES-003.

The use of shielded cables for connection of the monitor to the graphics card is required

to assure compliance with FCC regulations. Changes or modications to this unit not

expressly approved by the party responsible for compliance could void the user’s authority

to operate this equipment.

DO NOT throw the motherboard in municipal waste. This product has been designed to

enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin

indicates that the product (electrical and electronic equipment) should not be placed in

municipal waste. Check local regulations for disposal of electronic products.

DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol

of the crossed out wheeled bin indicates that the battery should not be placed in municipal

waste.

vii

Safety information

Electrical safety

• To prevent electric shock hazard, disconnect the power cable from the electric outlet

before relocating the system.

• When adding or removing devices to or from the system, ensure that the power cables

for the devices are unplugged before the signal cables are connected. If possible,

disconnect all power cables from the existing system before you add a device.

• Before connecting or removing signal cables from the motherboard, ensure that all

power cables are unplugged.

• Seek professional assistance before using an adapter or extension cord. These

devices could interrupt the grounding circuit.

• Ensure that your power supply is set to the correct voltage in your area. If you are not

sure about the voltage of the electrical outlet you are using, contact your local power

company.

•

If the power supply is broken, do not try to x it by yourself. Contact a qualied service

technician or your retailer.

Operation safety

• Before installing the motherboard and adding devices on it, carefully read all the manuals

that come with the package.

•

Before using the product, ensure that all cables are correctly connected and the power

cables are not damaged. If you detect any damage, contact your dealer immediately.

•

To avoid short circuits, keep paper clips, screws, and staples away from connectors,

slots, sockets and circuitry.

•

Avoid dust, humidity, and temperature extremes. Do not place the product in any area

where it may become wet.

•

Place the product on a at and stable surface.

•

If you encounter technical problems with the product, contact a qualied service

technician or your retailer.

About this guide

This user guide contains the information you need when installing and conguring the

motherboard.

How this guide is organized

This manual contains the following parts:

• Chapter 1: Product introduction

This chapter describes the features of the motherboard and the new technology it

supports.

• Chapter 2: BIOS information

This chapter tells how to change system settings through the BIOS setup menus.

Detailed descriptions of the BIOS parameters are also provided.

viii

Where to nd more information

Refer to the following sources for additional information and for product and software

updates.

1. ASUS websites

The ASUS website provides updated information on ASUS hardware and software

products. Refer to the ASUS contact information.

2. Optional documentation

Your product package may include optional documentation, such as warranty yers,

that may have been added by your dealer. These documents are not part of the

standard package.

Conventions used in this guide

To make sure that you perform certain tasks properly, take note of the following symbols used

throughout this manual.

Typography

Bold text Indicates a menu or an item to select.

Italics

Used to emphasize a word or a phrase.

<Key> Keys enclosed in the less-than and greater-than sign means

that you must press the enclosed key.

Example: <Enter> means that you must press the Enter or

Return key.

<Key1>+<Key2>+<Key3> If you must press two or more keys simultaneously, the key

names are linked with a plus sign (+).

Example: <Ctrl>+<Alt>+<D>

Command Means that you must type the command exactly as shown,

then supply the required item or value enclosed in brackets.

Example: At the DOS prompt, type the command line:

afudos /i[lename]

afudos /iP5N73AM.ROM

DANGER/WARNING: Information to prevent injury to yourself when trying to

complete a task.

CAUTION: Information to prevent damage to the components when trying to

complete a task.

NOTE: Tips and additional information to help you complete a task.

IMPORTANT: Instructions that you MUST follow to complete a task.

ix

P5N73-AM specications summary

(continued on the next page)

CPU LGA775 socket for Intel® Core™ 2 Quad / Core™ 2 Duo /

Pentium® D / Pentium® 4 / Celeron® processors

Compatible with Intel® 06 / 05B / 05A processors

Supports Intel® next generation 45nm CPU

Supports Enhanced Intel SpeedStep® Technology (EIST)

Supports Intel® Hyper-Threading Technology

* Refer to www.asus.com for Intel CPU support list

Chipset NVIDIA GeForce 7050 / nForce 610i (MCP73V)

Front side bus 1333 / 1066 / 800 / 533MHz

Memory Single-channel memory architecture

2 x 240-pin DIMM sockets support unbufferred non-ECC

DDR2-800 (overclocking) / 667 / 533 memory modules

Supports up to 4GB system memory

* When you install total memory of 4GB or more, Windows®

32-bit operating system may only recognize less than

3GB. Hence, a total installed memory of less than 3GB is

recommended if you are using a Windows® 32-bit operating

system.

Expansion slots 1 x PCIe x16 slot

1 x PCIe x1 slot

2 x PCI slots

Audio VIA VT1708B High Denition Audio 8-channel CODEC

1 x CD Audio in

1 x S/PDIF Out connector

Supports jack-dectect and Anti Pop Function

Storage Southbridge:

- 1 x Ultra DMA 133/100/66

- 4 x Serial ATA 3Gb/s devices

- RAID 0, RAID 1, and JBOD conguration

LAN Realtek RTL8201CP 10/100Mbps LAN

USB Supports up to 8 USB 2.0 ports (4 ports at mid-board,

4 ports at rear panel)

VGA GeForce 7050 GPU supports maximum resolution of

1920 x 1440 (@ 75Hz)

Maximum shared memory of 256MB

ASUS Special features ASUS CrashFree BIOS 2

ASUS Q-Fan

ASUS EZ Flash 2

ASUS MyLogo 2

BIOS features 8Mb Flash ROM, Award BIOS, PnP, DMI2.0, WfM2.0,

SM BIOS 2.5

x

P5N73-AM specications summary

*Specications are subject to change without notice.

Rear panel ports 1 x Parallel port

1 x LAN (RJ-45) port

4 x USB 2.0 / 1.1 ports

1 x COM port

1 x VGA port

1 x PS/2 keyboard port (purple)

1 x PS/2 mouse port (green)

8-channel audio I/O ports

Internal connectors 1 x Floppy disk drive connector

1 x CD audio in connector

1 x 24-pin ATX power connector

1 x 4-pin ATX 12 V power connector

2 x USB connectors for additional four USB 2.0 ports

1 x S/PDIF out connector

1 x Chassis intrusion connector

1 x Front panel audio connector

1 x CPU Fan connector

1 x Chassis fan connector

1 x Power fan connector

1 x Speaker conncetor

System panel connector

Power requirement ATX power supply (with 24-pin and 4-pin 12V plugs)

ATX 12V 2.0 compliant

Manageability WOL, PXE, WOR by Ring, PME Wake UP

Support DVD contents Drivers

ASUS PC Probe II

ASUS Update

Anti-virus software

Form factor MicroATX Form Factor: 9.6 in x 7.6 in (24.4 cm x 19.3 cm)

ASUS P5N73-AM 1-1

1.1 Welcome!

Thank you for buying an ASUS® P5N73-AM motherboard!

The motherboard delivers a host of new features and latest technologies, making it another

standout in the long line of ASUS quality motherboards!

Before you start installing the motherboard, and hardware devices on it, check the items in

your package with the list below.

If any of the above items is damaged or missing, contact your retailer.

1.3 Special features

1.3.1 Product highlights

Chapter 1

Product introduction

1.2 Package contents

Check your motherboard package for the following items.

Motherboard ASUS P5N73-AM motherboard

Cables 1 x Serial ATA cable

1 x Serial ATA power cable

1 x Ultra DMA 133/100/66 cable

1 x Floppy disk drive cable

Accessories 1 x I/O shield

Application DVD ASUS motherboard Support DVD

Documentation User Manual

Green ASUS

This motherboard and its packaging comply with the European Union’s

Restriction on the use of Hazardous Substances (RoHS). This is in line

with the ASUS vision of creating environment-friendly and recyclable

products/packaging to safeguard consumers’ health while minimizing

the impact on the environment.

1-2 Chapter 1: Product introduction

LGA775 Intel® Quad-core Processor Ready

This motherboard supports the latest powerful and energy efcient

processors from Intel. Intel® Quad-core is based on the Intel Core

Microarchitecture process technology that allows users to step up

to new levels of gaming experience and multi-tasking performance.

Combined with 1333 / 1066 / 800 front side bus (FSB), this

motherboard guarantees enhanced user experience in the digital home

and ofce.

Intel® Core™2 Processor Ready

This motherboard supports the latest Intel® Core™2 processor in

the LGA775 package. With the new Intel® Core™ microarchitecture

technology and 1333 / 1066 / 800 MHz FSB, Intel® Core™2 processor

is designed to provide powerful and energy efcient performance.

NVIDIA® GeForce™ 7050 / nForce™ 610i

The brand new NVIDIA® GeForce™ 7050 / nForce® 610i Media and

Communications Processor (MCP) features CineFXTM 3.0 Engine. This

unique combination of MCP creates a single motherboard featuring a

world-class DX9, Shader Model 3.0 GPU for faster and smooter game-

play, a high quality video processing engine for advancing quality of

video and DVD playback.

DDR2 memory support

The motherboard supports DDR2 memory that features data transfer

rates of 533/667/800 (overclocking) MHz to meet the higher bandwidth

requirements of the latest 3D graphics, multimedia, and Internet

applications.

S/PDIF digital sound ready

The motherboard supports the SONY-PHILIPS Digtal Interface function

(S/PDIF-out) through the S/PDIF interface at mid-board. It allows to

transfer digital audio without converting to analog format and keeps the

best signal quality.

High Denition Audio

Enjoy high-end sound quality on your PC! The onboard 8-channel HD

audio (High Denition Audio, previously codenamed Azalia) CODEC

enables high-quality 192KHz/24-bit audio output, jack-detect feature.

Serial ATA 3Gb/s technology and RAID support

This motherboard supports hard drives based on the Serial ATA (SATA)

3Gb/s storage specications, delivering enhanced scalability and

doubling the bus bandwidth for high-speed data retrieval and save.

It also supports RAID 0, RAID 1, and JBOD congurations for SATA

drives.

ASUS P5N73-AM 1-3

1.3.2 ASUS special features

ASUS Q-Fan

ASUS Q-Fan smartly adjusts the CPU fan speeds according to the

system loading to ensure a quiet, cool, and efcient operation.

ASUS MyLogo2™

This feature allows you to convert your favorite photo into a 256-color

boot logo for a more colorful and vivid image on your screen.

ASUS EZ Flash 2

ASUS EZ Flash 2 is a utility that allows you to update the BIOS without

using an OS-based utility.

ASUS CrashFree BIOS 2

ASUS CrashFree BIOS2 is an auto-recovery tool that allows you to

restore the original BIOS data from the support DVD when the BIOS le

is corrupted.

1-4 Chapter 1: Product introduction

1.4 Before you proceed

Take note of the following precautions before you install motherboard components or change

any motherboard settings.

• Unplug the power cord from the wall socket before touching any component.

• Use a grounded wrist strap or touch a safely grounded object or a metal object, such

as the power supply case, before handling components to avoid damaging them due to

static electricity.

• Hold components by the edges to avoid touching the ICs on them.

• Whenever you uninstall any component, place it on a grounded antistatic pad or in the

bag that came with the component.

• Before you install or remove any component, ensure that the ATX power supply is

switched off or the power cord is detached from the power supply. Failure to do so may

cause severe damage to the motherboard, peripherals, and/or components.

Onboard LED

The motherboard comes with a standby power LED that lights up to indicate that the system

is ON, in sleep mode, or in soft-off mode. This is a reminder that you must shut down

the system and unplug the power cable before removing or plugging in any motherboard

component. The illustration below shows the location of the onboard LED.

P5N73-AM

R

P5N73-AM Onboard LED

SB_PWR

ON

Standby

Power

OFF

Powered

Off

ASUS P5N73-AM 1-5

1.5 Motherboard overview

Before you install the motherboard, study the conguration of your chassis to ensure that the

motherboard ts into it.

Ensure that you unplug the power cord before installing or removing the motherboard.

Failure to do so can cause you physical injury and damage motherboard components.

1.5.1 Placement direction

When installing the motherboard, ensure that you place it into the chassis in the correct

orientation. The edge with external ports goes to the rear part of the chassis as indicated in

the image below.

1.5.2 Screw holes

Place six screws into the holes indicated by circles to secure the motherboard to the chassis.

Do not overtighten the screws! Doing so can damage the motherboard.

Place this side towards

the rear of the chassis

P5N73-AM

R

1-6 Chapter 1: Product introduction

1.5.3 Motherboard layout

1.5.4 Layout contents

P5N73-AM

19.3cm (7.6in)

24.4cm (9.6in)

SATA1

SATA4

SATA2

SATA3

PWR_FAN

CHA_FAN

EATXPWR

USB56 USB78

AAFP

MCP73V

DDR2 DIMM 1 (64 bit,240-pin module)

DDR2 DIMM 2 (64 bit,240-pin module)

CR2032 3V

Lithium Cell

CMOS Power

PCI2

PCI1

PCIEX16

PCIEX1_1

CD

AUDIO

USB34

LAN1_USB12

CHASSIS

SPEAKER

ATX12V

R

FLOPPY

Super I/O

CPU_FAN

SB_PWR

CLRTC

SPDIF_OUT

RTL

8201CP

VIA

VT1708B

LGA775

PS/2KBMS

T: Mouse

B: Keyboard

COM1

PARALLEL PORT

VGA1

PRI_IDE

F_PANEL

8Mb

BIOS

Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page

1. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-24 9. USB connectors (10-1 pin USB56, USB78) 1-22

2. LGA775 CPU Socket 1-7 10. Front panel audio connector (10-1 pin AAFP) 1-23

3. CPU, chassis, and power fan connectors

(4-pin CPU_FAN, 3-pin CHA_FAN, 3-pin PWR_FAN)

1-21 11. Optical drive audio connector (4-pin CD) 1-22

4. DDR2 DIMM slots 1-11 12. Digital audio connector (4-1 pin SPDIF_OUT) 1-20

5. Floppy disk drive connector (34-1 pin FLOPPY) 1-19 13. System panel connector (10-1 pin F_PANEL) 1-25

6. Chassis intrusion connector (4-1 pin CHASSIS) 1-23 14. Clear RTC RAM (3-pin CLRTC) 1-17

7. Serial ATA connectors (7-pin SATA1-4) 1-21 15. Speaker connector (4-pin SPEAKER) 1-24

8. IDE connector (40-1 pin PRI_IDE) 1-20 16. Onboard LED (SB_PWR) 1-4

ASUS P5N73-AM 1-7

1.6 Central Processing Unit (CPU)

This motherboard comes with a surface mount LGA775 socket designed for the

Intel® Core™2 Quad / Core™2 Duo / Pentium® D / Pentium® 4 / Celeron® processors.

• Ensure that all power cables are unplugged before installing the CPU.

• Connect the chassis fan cable to the CHA_FAN connector to ensure system stability.

• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and the

socket contacts are not bent. Contact your retailer immediately if the PnP cap is missing,

or if you see any damage to the PnP cap/socket contacts/motherboard components.

ASUS will shoulder the cost of repair only if the damage is shipment/transit-related.

• Keep the cap after installing the motherboard. ASUS will process Return Merchandise

Authorization (RMA) requests only if the motherboard comes with the cap on the

LGA775 socket.

• The product warranty does not cover damage to the socket contacts resulting from

incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP

cap.

To prevent damage to the socket pins,

DO NOT remove the PnP cap unless

you are installing a CPU.

2. Press the load lever with your thumb

(A), then move it to the left (B) until it is

released from the retention tab.

A

B

Load lever

Retention tab

1.6.1 Installing the CPU

To install a CPU:

1. Locate the CPU socket on the motherboard.

Before installing the CPU, ensure that the socket box is facing towards you and the load

lever is on your left.

P5N73-AM

R

P5N73-AM CPU

Socket 775

1-8 Chapter 1: Product introduction

3. Lift the load lever in the direction of the

arrow to a 135º angle.

4. Lift the load plate with your thumb and

forenger to a 100º angle (4A), then

push the PnP cap from the load plate

window to remove (4B).

Load plate

PnP cap

4A

4B

3

5. Position the CPU over the socket,

ensuring that the gold triangle is on the

bottom-left corner of the socket then t

the socket alignment key into the CPU

notch.

Gold

triangle

mark

Alignment key

CPU notch

The CPU ts in only one correct

orientation. DO NOT force the CPU

into the socket to prevent bending the

pins and damaging the CPU.

ASUS P5N73-AM 1-9

6. Apply some Thermal Interface Material

to the exposed area of the CPU that the

heatsink will be in contact with, ensuring

that it is spread in an even thin layer.

DO NOT eat the Thermal Interface Material. If it gets into your eyes or touches your skin,

ensure that you wash it off immediately, and seek professional medical help.

Some heatsinks come with pre-

applied thermal paste. If so, skip this

step.

To prevent contaminating the paste, DO NOT spread the paste with your nger directly.

7. Close the load plate (A), then push

the load lever (B) until it snaps into the

retention tab.

A

B

This motherboard supports

Intel® LGA775 processors with the

Intel® Enhanced Intel SpeedStep®

Technology (EIST) and

Hyper-Threading Technology.

1.6.2 Installing the CPU heatsink and fan

The Intel® LGA775 processor requires a specially designed heatsink and fan assembly to

ensure optimum thermal condition and performance.

• When you buy a boxed Intel® processor, the package includes the CPU fan and

heatsink assembly. If you buy a CPU separately, ensure that you use only Intel®-certied

multi-directional heatsink and fan.

• Ensure that you have installed the motherboard to the chassis before you install the

CPU fan and heatsink assembly.

• If you purchased a separate CPU heatsink and fan assembly, make sure that you have

properly applied Thermal Interface Material to the CPU heatsink or CPU before you

install the heatsink and fan assembly.

Your Intel® LGA775 heatsink and fan assembly comes in a push-pin design and requires no

tool to install.

1-10 Chapter 1: Product introduction

To install the CPU heatsink and fan:

1. Place the heatsink on top of the installed

CPU, ensuring that the four fasteners

match the holes on the motherboard.

1

B

A

B

The type of CPU heatsink and fan assembly may differ, but the installation steps and

fucntions should remain the same. The illustration above is for reference only.

3. Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.

DO NOT forget to connect

the CPU fan connector!

Hardware monitoring

errors can occur if you fail

to plug this connector.

P5N73-AM

R

P5N73-AM CPU Fan Connector

2. Push down two fasteners at a time in

a diagonal sequence to secure the

heatsink and fan assembly in place.

Orient the heatsink and fan assembly

such that the CPU fan cable is closest

to the CPU fan connector.

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Asus P5N73-AM User manual

Asus P5N73-AM User manual

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