ASUS P5GC-MX User Manual

Motherboard

P5GC-MX

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.

E293 2

Firs t E diti o n Janu a r y 200 7

iii

Contents

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

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

About this guide .................................................................................viii

Typography ......................................................................................... ix

P5GC-MX specications summary ........................................................ x

Chapter 1: Product introduction

1.1 Welcome! .............................................................................. 1-2

1.2 Package contents ................................................................. 1-2

1.3 Special features .................................................................... 1-2

1.3.1 Product highlights ................................................... 1-2

1.3.2 Innovative ASUS features ....................................... 1-4

1.4 Before you proceed .............................................................. 1-5

1.5 Motherboard overview .......................................................... 1-6

1.5.1 Placement direction ................................................ 1-6

1.5.2 Screw holes ............................................................. 1-6

1.5.3 Motherboard layout ................................................ 1-7

1.6 Central Processing Unit (CPU) .............................................. 1-8

1.6.1 Installling the CPU ................................................... 1-8

1.6.2 Installling the CPU heatsink and fan ...................... 1-11

1.6.3 Uninstalling the CPU heatsink and fan ................... 1-13

1.7 System memory .................................................................. 1-15

1.7.1 Overview ............................................................... 1-15

1.7.2 Memory congurations .........................................1-15

1.7.3 DDR2 Qualied Vendors List ................................. 1-16

1.7.4 Installing a DIMM ...................................................1-17

1.7.5 Removing a DIMM .................................................. 1-17

1.8 Expansion slots ................................................................... 1-18

1.8.1 Installing an expansion card .................................. 1-18

1.8.2 Conguring an expansion card .............................. 1-18

1.8.3 Interrupt assignments ........................................... 1-19

1.8.4 PCI slots ................................................................ 1-20

1.8.5 PCI Express x1....................................................... 1-20

1.8.6 PCI Express x16 .................................................... 1-20

1.9 Jumpers .............................................................................. 1-21

Contents

1.10 Connectors .........................................................................1-23

1.10.1 Rear panel connectors .......................................... 1-23

1.10.2 Internal connectors ............................................... 1-24

Chapter 2: BIOS setup

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

2.1.1 Creating a bootable oppy disk .............................. 2-2

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

2.1.3 AFUDOS utility ........................................................ 2-4

2.1.4 ASUS CrashFree BIOS 2 utility ................................ 2-6

2.1.5 ASUS Update utility ................................................ 2-8

2.2 BIOS setup program ............................................................ 2-11

2.2.1 BIOS menu screen ................................................. 2-12

2.2.2 Menu bar ............................................................... 2-12

2.2.3 Navigation keys ..................................................... 2-12

2.2.4 Menu items ........................................................... 2-13

2.2.5 Sub-menu items .................................................... 2-13

2.2.6 Conguration elds ............................................... 2-13

2.2.7 Pop-up window ...................................................... 2-13

2.2.8 Scroll bar ............................................................... 2-13

2.2.9 General help .......................................................... 2-13

2.3 Main menu ........................................................................... 2-14

2.3.1 System Time ......................................................... 2-14

2.3.2 System Date ......................................................... 2-14

2.3.3 Legacy Diskette A ...............................................2-14

2.3.4 Primary, Third and Fourth IDE Master/Slave ......... 2-15

2.3.5 IDE Conguration .................................................. 2-16

2.3.6 System Information............................................... 2-17

2.4 Advanced menu .................................................................. 2-18

2.4.1 USB Conguration ................................................. 2-18

2.4.2 CPU Conguration ................................................. 2-20

2.4.3 Chipset .................................................................. 2-21

2.4.4 Onboard Devices Conguration ............................. 2-24

2.4.5 PCI PnP .................................................................. 2-26

Contents

2.5 Power menu ........................................................................ 2-27

2.5.1 Suspend Mode ....................................................... 2-27

2.5.2 ACPI 2.0 Support ................................................. 2-27

2.5.3 ACPI APIC Support ............................................... 2-27

2.5.4 APM Conguration ................................................2-28

2.5.5 Hardware Monitor .................................................. 2-30

2.6 Boot menu .......................................................................... 2-31

2.6.1 Boot Device Priority .............................................. 2-31

2.6.2 Boot Settings Conguration ................................. 2-32

2.6.3 Security ................................................................. 2-33

2.7 Exit menu ............................................................................ 2-35

Chapter 3: Software support

3.1 Installing an operating system .............................................. 3-2

3.2 Support CD information ........................................................ 3-2

3.2.1 Running the support CD .......................................... 3-2

3.2.2 Drivers menu ........................................................... 3-3

3.2.3 Utilities menu .......................................................... 3-4

3.2.4 ASUS Contact information ...................................... 3-5

Appendix: CPU features

A.1 Intel® EM64T ......................................................................... A-2

Using the Intel® EM64T feature ............................................ A-2

A.2 Enhanced Intel SpeedStep® Technology (EIST) .................... A-2

A.2.1 System requirements .............................................. A-2

A.2.2 Using the EIST ......................................................... A-3

A.3 Intel® Hyper-Threading Technology ...................................... A-4

Using the Hyper-Threading Technology ............................... A-4

Notices

Fed er al Co mm un ica ti on s C om mi ssi on S tat em en t

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.

Can ad ia n D ep ar tme nt o f C om mu nic at io ns St at eme nt

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.

vii

Safety information

Ele ct ri cal s af ety

•

To prevent electrical shock hazard, disconnect the power cable from the electrical 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.

•

Make sure 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 fix it by yourself. Contact a qualified service technician or your retailer.

Ope ra ti on sa fe ty

•

Before installing the motherboard and adding devices on it, carefully read all the manuals that came with the package.

•

Before using the product, make sure 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 stable surface.

•

If you encounter technical problems with the product, contact a qualified service technician or your retailer.

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.

viii

About this guide

This user guide contains the information you need when installing and

conguring the motherboard.

How t hi s g ui de is o rg ani ze d

This manual contains the following parts:

• Chap t e r 1: P r o duct i n trod u c t ion This chapter describes the features of the motherboard and the

new technology it supports. This chapter also lists the hardware setup procedures that you have to perform when installing system components. It includes description of the jumpers and connectors on the motherboard.

• Chap t e r 2: B I O S se t u p This chapter tells how to change system settings through the BIOS

Setup menus. Detailed descriptions of the BIOS parameters are also provided.

• Chap t e r 3: S o f twar e s uppo r t This chapter describes the contents of the support CD that comes

with the motherboard package.

Whe re t o f in d mor e in for ma ti on

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

1. ASUS w e bsit e s The ASUS website provides updated information on ASUS hardware

and software products. Refer to the ASUS contact information.

2. Opti o n a l do c u m enta t i o n 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.

Con ve nt ion s us ed in t his g ui de

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

Typography

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.

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 /iP5GCMX.ROM

P5GC-MX specications summary

(continued on the next page)

CPU

Chipset

Front Side Bus

Memory

VGA

Expansion slots

Storage

Audio

LAN

USB

Rear panel

BIOS features

LGA775 socket for Intel® Core™2 Duo / Pentium® D /

Pentium® 4 / Celeron® D Processors Compatible with Intel® 06/05B/05A processors Supports Intel® Enhanced Memory 64 Technology (EM64T), Enhanced Intel SpeedStep® Technology (EIST), and Intel® Hyper-Threading Technology

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

Northbridge: Intel® 945GC Southbridge: Intel® ICH7

800/533 MHz

Dual-channel memory architecture 2 x 240-pin DIMM sockets support up to 2GB of unbufferred non-ECC 533/400 MHz DDR2 DIMMs

Integrated Intel® Graphics Media Accelerator 950

1 x PCI Express x16 slot 1 x PCI Express x1 slot 2 x PCI 2.2 slots

Intel® ICH7 SouthBridge supports:

- 1 x Ultra DMA 100/66/33

- 4 x Serial ATA 3Gb/s ports

Realtek® ALC883 High-Denition audio CODEC, 6-channel audio port S/PDIF out interface

PCI Express 10/100M LAN controller

Supports up to 8 USB 2.0 ports (four ports at mid-board, four ports at back panel)

1 x Parallel port 1 x Serial port 1 x LAN (RJ-45) port 4 x USB 2.0 ports

1 x VGA port

1 x PS/2 keyboard port 1 x PS/2 mouse port

6-channel high-denition audio I/O port

4 Mb Flash ROM, AMI BIOS, PnP, WfM2.0, DMI2.0, SM BIOS 2.3

*Specications are subject to change without notice.

P5GC-MX specications summary

Special features

Manageability

Internal connectors

Power Requirement

Form Factor

Support CD contents

ASUS EZ Flash ASUS CrashFree BIOS 2 ASUS MyLogo™ ASUS Q-Fan

WfM 2.0, DMI 2.0, WOL by PME, WOR by PME

2 x USB 2.0 connectors for 4 additional USB 2.0 ports 1 x Floppy disk drive connector 1 x IDE connector for two devices 4 x Serial ATA connectors 1 x CPU fan connector 1 x Chassis fan connector 1 x 24-pin ATX power connector 1 x 4-pin ATX 12 V power connector 1 x CD audio in connector 1 x Chassis intrusion connector

1 x Front panel high-denition audio connector

1 x S/PDIF out connector 1 x System Panel connector

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

uATX form factor: 9.6 in x 7.2 in (24.5cm x 18.3cm)

Device drivers ASUS PC Probe II

ASUS Live Update utility

Anti-virus software (OEM version)

xii

Product

introduction

This chapter describes the motherboard features and the new technologies it supports.

1-2 Chapter 1: Product introduction

1.1 Welcome!

T h a n k y o u f o r b u y i n g a n A S U S® P 5 G C - M X m o t h e r b o a r d !

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.

1.2 Package contents

Check your motherboard package for the following items.

Motherboard ASUS P5GC-MX motherboard

Cables 1 x Serial ATA cable 1 x Serial ATA power cable 1 x Ultra DMA 100/66 cable 1 x Floppy disk drive cable

Accessories I/O shield

Application CDs ASUS motherboard support CD

Documentation User guide

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

1.3 Special features

1.3 .1 Pr od uct h ig hli gh ts

Intel® Core™2 Duo

This motherboard supports the latest powerful and energy efcient

processors from Intel®. Intel® Core™2 Duo is based on the Intel® Core™ Microarchitecture and built on the 65-nanometer (nm) process technologythe 65-nanometer (nm) process technology with copper interconnect. IntelIntel® Core™2 Duo allows users to step up to new levels of gaming experience and multi-tasking performance. Boosting

performance is a shared and multi-core optimized L2 cache of 2 MB or 4 MB, guaranteeing enhanced user experience in the digital home and ofce.

See page 1-8 for details.

Due to chipset limitation, Intel® Core™2 processors can only run at a maxium speed of 800 MHZ FSB on this motherboard.

ASUS P5GC-MX 1-3

64- b it CPU sup por t

The motherboard supports 64-bit processors that provides high-performance computing and faster memory access required for memory and data intensive applications.

Int e l® 94 5 GC chi p set

The Intel® 945GC graphics memory controller hub (GMCH) and the ICH7 I/O controller hub provide the vital interfaces for the motherboard. The GMCH features the Intel® Graphics Media Accelerator 950, an integrated graphics engine for enhanced 3D, 2D, and video capabilities. The GMCH contains one 16-lane PCI Express port intended for an external PCI Express graphics card and provides the interface for a processor in the 775-land package with 800/533 MHz front side bus (FSB), dual channel DDR2 at speeds of up to 533 MHz.

The Intel® ICH7 Southbridge represents the seventh generation I/O controller hub that provides the interface for PCI Express and high

denition audio.

DDR 2 m e mor y s u ppo r t

The motherboard supports DDR2 memory which features data transfer rates of 533 /400 MHz to meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet applications. The dual-channel DDR2 architecture doubles the bandwidth of your system memory to boost system performance, eliminating bottlenecks with peak bandwidths of up to 8.5 GB/s. See pages 1-15 to 1-17 for details.

PCI Ex p res s ™ i nte r fa c e

The motherboard fully supports PCI Express, the latest I/O interconnect technology that speeds up the PCI bus. PCI Express features point-to-point serial interconnections between devices and allows higher clockspeeds by carrying data in packets. This high speed interface is software compatible

with existing PCI specications. See page 1-20 for details.

Ser i al ATA 3. 0 Gb / s t ech n olo gy

The motherboard supports the Serial ATA technology through the Serial ATA interfaces and the Intel® ICH7 chipset. The SATA specication allows

for thinner, more exible cables with lower pin count, reduced voltage

requirement, and up to 300 MB/s data transfer rate.

1-4 Chapter 1: Product introduction

Hig h D e fin i ti o n A u di o

Enjoy high-end sound quality on your PC! The onboard HD audio (High

Denition Audio, previously codenamed Azalia) CODEC enables high-quality

192KHz/24-bit audio output, and multi-streaming technology that simultaneously sends different audio streams to different destinations. You can now talk to your partners on the headphone while playing multi-channel network games.

1.3 .2 In n ov at iv e A SU S f ea tu re s

ASU S C r ash F re e BI O S 2

This feature allows you to restore the original BIOS data from the support CD in case when the BIOS codes and data are corrupted. This protection eliminates the need to buy a replacement ROM chip. See page 2-6 for details.

ASU S E Z Fl a sh

With the ASUS EZ Flash, you can easily update the system BIOS even before loading the operating system. No need to use a DOS-based utility or

boot from a oppy disk. See page 2-3 for details.

ASU S Q - Fan te c hno l og y

The ASUS Q-Fan technology smartly adjusts the fan speeds according to the system loading to ensure quiet, cool, and efcient operation.

ASUS P5GC-MX 1-5

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 should 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.

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 to 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.

P5GC-MX

Onboard LED

SB_PWR

Standby

Power

OFF

Powered

Off

1-6 Chapter 1: Product introduction

P5GC-MX

1.5 Motherboard overview

Before you install the motherboard, study the conguration of your chassis to ensure that the motherboard ts into it.

Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.

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

1.5 .1 Pl ac eme nt d ire ct io n

When installing the motherboard, make sure 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 Sc re w h ol es

Place six (6) screws into the holes indicated by circles to secure the

motherboard to the chassis.

Place this side towards the rear of the chassis

ASUS P5GC-MX 1-7

1.5 .3 Mo th erb oa rd la yo ut

P5GC-MX

LGA775

Intel ICH7

Intel

MCH 945GC

18.3cm(7.2in)

24.4cm(9.6in)

DDR2 DIMM_A1(64 bit,240-pin module)

DDR2 DIMM_B1(64 bit,240-pin module)

PCI1

PCI2

PCIEX1_1

PCIEX1_16

CR2032 3V Lithium Cell

CMOS Power

EATXPWR

ATX12V

SEC_IDE

CPU_FAN

CHA_FAN

4Mb

BIOS

F_PANEL

SPEAKER

SATA1 SATA2

SATA4SATA3

USB56 USB78

FLOPPY

AAFP

ALC883

Super I/O

SPDIF_OUT

PS2_USBPWR

RTM876-660

CLRTC

CHASSIS

PS/2KBMS

T: Mouse B: Keyboard

LAN_USB12

COM1

PARALLEL PORT

VGA1

USB34

AUDIO

SB_PWR

LAN

1-8 Chapter 1: Product introduction

1.6 .1 In st all li ng th e CP U

To install a CPU:

1. Locate the CPU socket on the motherboard.

1.6 Central Processing Unit (CPU)

The motherboard comes with a surface mount LGA775 socket designed for the Core™2 Duo/Pentium® D/Pentium® 4 and Celeron

D processors.

•

Your boxed Intel® Core™2 Duo/Pentium® D/Pentium® 4 or Celeron® D LGA775 processor package should come with installation instructions for the CPU, fan and heatsink assembly. If the instructions in this section do not match the CPU documentation, follow the latter.

• Upon purchase of the motherboard, make sure that the PnP cap is on the socket and the socket pins are not bent. Contact your retailer immediately if the PnP cap is missing, or if you see any damage to the PnP cap/socket pins/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 pins resulting from incorrect CPU installation/removal, or misplacement/ loss/incorrect removal of the PnP cap.

Before installing the CPU, make sure that the socket box is facing towards you and the load lever is on your left.

P5GC-MX

P5GC-MX CPU Socket 775

ASUS P5GC-MX 1-9

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 (A), then push the PnP cap from the load plate window to remove (B).

To prevent damage to the socket pins, do not remove the PnP cap unless you are installing a CPU.

5. Position the CPU over the socket, making sure that the gold triangle is on the bottom-left corner of the socket. The socket

alignment key should t

into the CPU notch.

2. Press the load lever with your thumb (A) and move it to the left (B) until it is released from the retention tab.

Ret e n t ion t a b

Loa d l ever

Thi s s ide o f t he ca m box s h ould f a c e you .

PnP C a p

Loa d p late

Ali g n m ent k e y

Gol d t riang l e mark

1-10 Chapter 1: Product introduction

The CPU ts in only one correct orientation. DO NOT force the CPU

into the socket to prevent bending the connectors on the socket and damaging the CPU!

6. Close the load plate (A), then push the load lever (B) until it snaps into the retention tab.

The motherboard supports Intel® LGA775 processors with the Intel® Enhanced Memory 64 Technology (EM64T), Enhanced Intel SpeedStep

Technology (EIST), and Hyper-Threading Technology.

ASUS P5GC-MX 1-11

1.6 .2 In st all li ng th e CP U h ea ts ink a nd fa n

The Intel® Core™2 Duo/Pentium® D/Pentium® 4 and Celeron

D processors require a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance.

• Install the motherboard to the chassis before you install the CPU fan and heatsink assembly

• When you buy a boxed Intel® Core™2 Duo/Pentium® D/Pentium® 4 or Celeron® D LGA775 processor, the package includes the CPU fan and heatsink assembly. If you buy a CPU separately, make sure that you use only Intel®-certied multi-directional heatsink and fan.

• Your I Intel® Core™2 Duo/Pentium® D/Pentium® 4 or Celeron® D

LGA775 heatsink and fan assembly comes in a push-pin design and

requires no tool to install.

If you purchased a separate CPU heatsink and fan assembly, make sure that a Thermal Interface Material is properly applied to the CPU heatsink or CPU before you install the heatsink and fan assembly.

To install the CPU heatsink and fan:

1. Place the heatsink on top of the installed CPU, making sure that the four fasteners match the holes on the motherboard.

Fas t e n er

Mot h e r board h o le

Make sure each fastener is oriented as shown, with the narrow groove directed outward.

1-12 Chapter 1: Product introduction

• Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.

• We recommend you to install the chassis fan for better thermal state.

3. When the fan and heatsink assembly is in place, connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.

2. Push down two fasteners at a time in a diagonal sequence to secure the heatsink and fan assembly in place.

P5GC-MX

CPU Fan Connector

CPU_FAN

GND CPU FAN PWR CPU FAN IN CPU FAN PWM

ASUS P5GC-MX 1-13

1.6 .3 Un in sta ll in g t he C PU he at s in k an d f an

To uninstall the CPU heatsink and fan:

1. Disconnect the CPU fan cable from the connector on the motherboard.

2. Rotate each fastener counterclockwise.

3. Pull up two fasteners at a time in a diagonal sequence to disengage the heatsink and fan assembly from the motherboard.

1-14 Chapter 1: Product introduction

4. Remove the heatsink and fan assembly from the motherboard.

5. Rotate each fastener clockwise to reset the orientation.

The narrow end of the groove should point outward after resetting. (The photo shows the groove shaded for emphasis.)

Nar r o w end o f the g r o o ve

ASUS P5GC-MX 1-15

1.7 System memory

1.7 .1 Ov er vie w

The motherboard comes with two Double Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets.

A DDR2 module has the same physical dimensions as a DDR DIMM but has a 240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched differently to prevent installation on a DDR DIMM socket.

The gure illustrates the location of the DDR2 DIMM sockets:

1.7 .2 Me mo ry co nf igu ra ti ons

You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered non-ECC DDR2 DIMMs into the DIMM sockets.

• For dual-channel conguration, the total size of memory module(s)

installed per channel must be the same (DIMM_A1 = DIMM_B1).

• Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules

from the same vendor. Refer to the DDR2 Qualied Vendors List on

next page for details.

• This motherboard does not support memory modules made up of 128 Mb chips or double-sided x16 memory modules. .

Channel Sockets

Channel A DIMM_A1 Channel B DIMM_B1

P5GC-MX

240-pin DDR2 DIMM Sockets

128 Pins

112 Pins

DIMMB1

DIMMA1

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