ASUS M4N75TD User Manual

M4N75TD
Motherboard
E5353
First Edition V1 February 2010
Copyright © 2010 ASUSTeK COMPUTER INC. All Rights Reserved.
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.
Offer to Provide Source Code of Certain Software
This product may contain copyrighted software that is licensed under the General Public License (“GPL”) and under the Lesser General Public License Version (“LGPL”). The GPL and LGPL licensed code in this product is distributed without any warranty. Copies of these licenses are included in this product.
You may obtain the complete corresponding source code (as dened in the GPL) for the GPL Software,
and/or the complete corresponding source code of the LGPL Software (with the complete machine­readable “work that uses the Library”) for a period of three years after our last shipment of the product including the GPL Software and/or LGPL Software, which will be no earlier than December 1, 2011, either (1) for free by downloading it from http://support.asus.com/download; or (2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location where you want to have it shipped to, by sending a request to:
ASUSTeK Computer Inc. Legal Compliance Dept. 15 Li Te Rd., Beitou, Taipei 112 Taiwan
In your request please provide the name, model number and version, as stated in the About Box of the product for which you wish to obtain the corresponding source code and your contact details so that we can coordinate the terms and cost of shipment with you.
The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as the corresponding binary/object code.
This offer is valid to anyone in receipt of this information.
ASUSTeK is eager to duly provide complete source code as required under various Free Open Source Software licenses. If however you encounter any problems in obtaining the full corresponding source code we would be much obliged if you give us a notication to the email address gpl@asus.com, stating the product and describing the problem (please do NOT send large attachments such as source code archives etc to this email address).
ii

Contents

Contents ...................................................................................................... iii
Notices ......................................................................................................... vi
Safety information ..................................................................................... vii
About this guide ........................................................................................ vii
M4N75TD specications summary ........................................................... ix
Chapter 1 Product introduction
1.1 Welcome! ...................................................................................... 1-1
1.2 Package contents .........................................................................
1.3 Special features ............................................................................
1.3.1 Product highlights ...........................................................
1.3.2 ASUS Unique Features ...................................................
1.4 Before you proceed .....................................................................
1.5 Motherboard overview .................................................................
1.5.1 Placement direction ........................................................
1.5.2 Screw holes ....................................................................
1.5.3 Motherboard layout .........................................................
1.5.4 Layout contents ...............................................................
1.6 Central Processing Unit (CPU) ...................................................
1.6.1 Installing the CPU ...........................................................
1.6.2 Installing the heatsink and fan ........................................
1.7 System memory ...........................................................................
1.7.1 Overview .........................................................................
1.7.2 Memory congurations ....................................................
1.7.3 Installing a DIMM ..........................................................
1.7.4 Removing a DIMM ........................................................
1.8 Expansion slots ..........................................................................
1.8.1 Installing an expansion card .........................................
1.8.2 Conguring an expansion card .....................................
1.8.3 PCI slots ........................................................................
1.8.4 PCI Express 2.0 x1 slots ...............................................
1.8.5 PCI Express 2.0 x16 slots .............................................
1.9 Jumpers ......................................................................................
1.10 Onboard switches ......................................................................
1.11 Onboard LEDs ............................................................................
1-1
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iii
Contents
1.12 Connectors ................................................................................. 1-21
1.12.1 Rear panel connectors ..................................................
1.12.2 Internal connectors .......................................................
1.13 Software support ........................................................................
1.13.1 Installing an operating system ......................................
1.13.2 Support DVD information ..............................................
®
1.14 NVIDIA
1.14.1 NVIDIA
1.14.2 NVIDIA
Chapter 2
2.1 Knowing BIOS .............................................................................. 2-1
2.2 Updating BIOS ..............................................................................
2.2.1 ASUS Update utility ........................................................
2.2.2 ASUS EZ Flash 2 utility ...................................................
2.2.3 ASUS CrashFree BIOS 3 utility ......................................
2.3 BIOS setup program ....................................................................
2.3.1 BIOS menu screen ..........................................................
2.3.2 Menu bar .........................................................................
2.3.3 Navigation keys ...............................................................
2.3.4 Menu items .....................................................................
2.3.5 Submenu items ...............................................................
2.3.6 Conguration elds .........................................................
2.3.7 General help ...................................................................
2.3.8 Pop-up window ...............................................................
2.3.9 Scroll bar .........................................................................
2.4 Main menu ....................................................................................
2.4.1 System Time ...................................................................
2.4.2 System Date ...................................................................
2.4.3 Language ........................................................................
2.4.4 Primary IDE Master/Slave ...............................................
2.4.5 SATA 1–4 ........................................................................
2.4.6 Storage Conguration ...................................................
2.4.7 System Information .......................................................
2.5 Ai Tweaker menu ........................................................................
2.5.1 Ai Overclock Tuner .........................................................
2.5.2 CPU Ratio ......................................................................
SLI™ technology support ........................................... 1-32
®
SLI™ technology ............................................ 1-32
®
Hybrid SLI™ technology ................................ 1-36
1-21
1-23
1-31
1-31
1-31
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iv
Contents
2.5.3 DRAM Frequency ......................................................... 2-12
2.5.4
2.5.5 HT Link Speed ..............................................................
2.5.6 DRAM Timing Conguration .........................................
2.5.7 DRAM Driving Conguration .........................................
2.5.8 Processor Voltage .........................................................
2.5.9 CPU/NB Voltage ...........................................................
2.5.10 CPU VDDA Voltage .......................................................
2.5.11 DRAM Voltage ..............................................................
2.5.12 HT Voltage ....................................................................
2.5.13 NB Voltage ....................................................................
2.5.14 CPU/LDT Spread Spectrum ..........................................
2.5.15 PCIE Spread Spectrum .................................................
2.5.16 SATA Spread Spectrum ................................................
2.5.17 PCI Spread Spectrum ...................................................
2.6 Advanced menu .........................................................................
2.6.1 CPU Conguration ........................................................
2.6.2 Chipset ..........................................................................
2.6.3 Onboard Devices Conguration ....................................
2.6.4 PCIPnP .........................................................................
2.6.5 USB Conguration ........................................................
2.7 Power menu ................................................................................
2.7.1 Suspend Mode ..............................................................
2.7.2 ACPI 2.0 Support ..........................................................
2.7.3 ACPI APIC support .......................................................
2.7.4 Hardware Monitor .........................................................
2.8 Boot menu ..................................................................................
2.8.1 Boot Device Priority ......................................................
2.8.2 Boot Settings Conguration ..........................................
2.8.3 Security .........................................................................
2.9 Tools menu .................................................................................
2.9.1 ASUS EZ Flash 2 ..........................................................
2.9.2 Express Gate ................................................................
2.9.3 ASUS O.C. Prole .........................................................
2.9.4 AI NET 2
2.10 Exit menu ....................................................................................
CPU/NB Frequency ...................................................... 2-12
........................................................................ 2-24
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v

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.
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.
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.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework, we published the chemical substances in our products at ASUS REACH website at http://green.asus.com/english/REACH.htm.
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.
vi

Safety information

Electrical safety
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.
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 came with the package.
Before using the product, ensure 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 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 guide 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 setup
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
vii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual.
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.
IMPORTANT: Instructions that you MUST follow to complete a
task.
NOTE: Tips and additional information to help you complete a
task.
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.
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>+<Del>
viii
M4N75TD specications summary
CPU AMD® Socket AM3; Phenom™ II / Athlon™ II /
Sempron™ 100 Series Processors AMD® 140W CPU Support
Supports 45nm CPU
Chipset NVIDIA nForce® 750a SLI
®
Supports NVIDIA Clock Calibration (NVCC) function
System bus Up to 5200 MT/s HyperTransport™ 3.0
Memory 4 x DIMM, max. 16 GB, DDR3 2000(O.C.) / 1333 / 1066 MHz
ECC / non-ECC, un-buffered memory Dual-channel memory architecture * When you install a total memory of 4 GB capacity or more,
Windows® 32-bit operating system may only recognize less than 3 GB. We recommend using a maximum of 3 GB system memory if you are using a Windows® 32-bit OS.
** Refer to www.asus.com or this user manual for the
Memory QVL (Qualied Vendors Lists)
Multi-GPU support Supports NVIDIA® SLI™ Technology at x8 link
Supports Hybrid SLI® Technology
Expansion slots 2 x PCIe 2.0 x16 slots (dual at x8 mode)
2 x PCIe x1 slots 2 x PCI 2.2 slots
Storage NVIDIA nForce® 750a SLI® chipset
- 1 x Ultra DMA 133/100 port
- 6 x SATA 3.0 Gb/s ports (Legacy IDE operation is only supported on drives 1–4) NVIDIA® MediaShield™ RAID supports RAID 0, 1, 0+1, 5, and JBOD
LAN Broadcom® B5071 Gigabit LAN controller featuring AI NET 2
Audio VIA® VT1708S 8-channel High Denition Audio CODEC
- Supports Jack-Detection, Multi-Streaming, and Front Panel Jack-Retasking
- Optical S/PDIF Out port at back I/O
- ASUS Noise Filter
IEEE 1394 VIA® VT6308P controller supports 2 x IEEE 1394a ports
USB 12 x USB 2.0 ports (6 ports at midboard; 6 ports at back
panel)
(continued on the next page)
ix
M4N75TD specications summary
ASUS Unique Features ASUS Exclusive Features
ASUS Exclusive Overclocking Features
Rear panel I/O ports 1 x PS/2 keyboard port (purple)
- Core Unlocker
- MemOK! ASUS Power Solutions
- 8+1 Phase Power Design
- 100% Long-Life Solid Cap.
- EPU
ASUS Express Gate ASUS Quiet Thermal Solution
- Fanless Design: stylish heatsink solution
- Stack Cool 3 ASUS EZ DIY
- CrashFree BIOS 3
- O.C. Prole
- EZ Flash 2
- MyLogo 2™
- Multi-language BIOS
Intelligent overclocking tools
- TurboV
- Turbo Key
Precision Tweaker 2
- vDIMM: 16-step DRAM voltage control
- vCore: Adjustable CPU voltage at 0.0125V increment
- vChipset (N.B.): 4-step voltage control SFS (Stepless Frequency Selection):
- FSB tuning from 200MHz up to 600MHz at 1MHz increment
- Memory tuning from 1066MHz up to 2000MHz
- PCIe frequency tuning from 100MHz to 200MHz at 1MHz increment
Overclocking protection:
- ASUS C.P.R. (CPU Parameter Recall)
1 x PS/2 mouse port (green) 1 x Optical S/PDIF Out port 1 x IEEE 1394a port 1 x LAN (RJ-45) port 6 x USB 2.0/1.1 ports 8-channel audio I/O ports
(continued on the next page)
x
M4N75TD specications summary
Internal I/O connectors 3 x USB connectors support additional 6 USB ports
BIOS features 8 Mb Flash ROM, AMI BIOS, PnP, DMI 2.0, WfM2.0,
Support CD contents Drivers
Form factor ATX form factor: 12 in x 9.6 in (30.5 cm x 24.4 cm)
* Specications are subject to change without notice.
1 x IDE connector 1 x COM connector 6 x SATA connectors 1 x CPU Fan connector 2 x Chassis Fan connectors (1 x 4-pin, 1 x 3-pin) 1 x Power Fan connector 1 x IEEE1394a connector 1 x MemOK! button 1 x Core Unlocker switch 1 x S/PDIF Out Header Front panel audio connector 24-pin ATX Power connector 8-pin ATX 12V Power connector System Panel
SM BIOS 2.5, ACPI 2.0, ASUS EZ Flash 2, ASUS CrashFree BIOS 3
ASUS Utilities ASUS Update Anti-virus software (OEM version)
xi
xii
Chapter 1
Product introduction

1.1 Welcome!

Thank you for buying an ASUS® M4N75TD 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.

1.2 Package contents

Check your motherboard package for the following items.
Motherboard ASUS M4N75TD motherboard Cables 1 x Ultra DMA 133/100/66 cable
2 x Serial ATA cables 1 x SLI bridge cable
Accessories 1 x I/O shield Application DVD ASUS motherboard support DVD Documentations User manual
If any of the above items is damaged or missing, contact your retailer.

1.3 Special features

1.3.1 Product highlights

AMD® Socket AM3; Phenom™ II / Athlon™ II / Sempron™ 100
Chapter 1: Product introduction 1-1
Series Processors
This motherboard supports AMD® AM3 multi-core processors with unique L3 cache and delivers better overclocking capabilities with less power consumption. It features dual-channel DDR3 1333 memory support and accelerates data transfer rate up to 5200MT/s via HyperTransort™ 3.0 based system bus. This motherboard also supports AMD® CPUs in the new 45nm manufacturing process.
NVIDIA nForce® 750a SLI
1 2
NVIDIA nForce® 750a SLI® media and communication processors (MCPs) are the foundation for the world’s ultimate gaming PC. The MCPs support the NVIDIA® Scalable Link Interface (SLI) technology that allows two graphics processing units (GPUs) in a single system. The NVIDIA nFORCE® 750a SLI® chipset also supports six (6) Serial ATA 3 Gb/s devices, PCI Express x16 slots with NVIDIA® SLI™ support at dual x8 mode, and up to 12 USB 2.0 ports.
DDR3 2000(O.C.) support
This motherboard supports DDR3 2000(O.C,), which provides faster data transfer rate and more bandwidth to increase memory data transfer
rate and computing efciency. This enhances system performance in 3D
graphics and other memory demanding applications.

1.3.2 ASUS Unique Features

ASUS Express Gate
Express Gate is an ASUS exclusive OS that provides you with quick access to the Internet and key applications before entering the Windows® OS.
ASUS Exclusive Features
Core Unlocker
ASUS Core Unlocker simplies the activation of a latent AMD® CPU—with
just a simple switch or hot key. Enjoy an instant performance boost by simply unlocking the extra cores, without performing complicated BIOS changes.
MemOK!
Memory compatibility is among the top concerns during computer upgrades. Worry no more. MemOK! is the fastest memory booting solution today. This remarkable memory rescue tool requires nothing but a push of a button to patch memory issues and get your system up and running in no time. The technology is able to determine failsafe settings that can dramatically improve your system booting success.
ASUS Power Solutions
8+1 Phase Power Design
To fully unleash the latest generation AM3 CPU’s potential, ASUS M4N75TD motherboard has adopted the brand-new 8-phase VRM power
design, which delivers high power efciency and supreme overclocking
ability. This series’ high quality power components effective lowers system temperature to ensure longer component lifespan. ASUS M4N75TD also features an extra 1-phase power for integrated memory/HT controller to provide independent power to vital components.
®
1-2 ASUS M4N75TD
100% Long-Life Solid Cap.
This motherboard uses all long-life capacittors onboard for durability, imporved lifespan, and enhanced thermal capacity.
ASUS EPU
The ASUS EPU (Energy Processing Unit) provides total system power management by detecting current PC loadings and intelligently moderating power usage for critical PC components in real-time–helping save power and money!
ASUS Quiet Thermal Solutions
Fanless Design: stylish heatsink solution
The streamline-shaped heatsink features 0-dB thermal solution that offers
users a noiseless PC environment. Not only the beautifully curved ns
upgrade the visual enjoyment for motherboard users, but also the special
thickened bottom design effectively cools down hot airows generated
by the north bridge chipset. Combined with usability and aesthetics, the ASUS streamline-shaped heatsink will give users an extremely silent and cooling experience with the elegant appearance!
Up to 20ºC (36ºF) Cooler—Stack Cool 3
Stack Cool 3 is a fanless cooling solution offered exclusively by ASUS. It effectively and noiselessly transfers heat generated by the critical components to the other side of the specially designed PCB (printed circuit board) for effective heat dissipation—making temperatures cooler by up to 20ºC.
ASUS Intelligent Overclocking Tools
TurboV
Feel the adrenaline rush of real-time O.C.—now a reality with the ASUS TurboV. This easy O.C. tool allows you to overclock without exiting or rebooting the OS: and its user-friendly interface makes overclock with just
a few clicks away. More, the ASUS OC Proles in TurboV provides the
best O.C. settings in different scenarios.
Turbo Key
ASUS Turbo Key allows you to turn the PC power button into a physical overclocking button. After the easy setup, Turbo Key boosts performances without interrupting ongoing work or games, simply through pressing the button.
Chapter 1: Product introduction 1-3

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.
• Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, 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, switch off the ATX power supply and detach its power cord. Failure to do so may cause severe damage to the motherboard, peripherals, or components.

1.5 Motherboard overview

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 nine (9) 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.
1-4 ASUS M4N75TD

1.5.3 Motherboard layout

1.5.4 Layout contents

Connectors/Jumpers/Slots Page
1. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V) 1-24
2. CPU socket AM3
3. CPU, Chassis and Power Fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1, 3-pin CHA_FAN2, 3-pin PWR_FAN)
4. DDR3 DIMM slots
5. MemOK! switch
6. Serial ATA connectors (7-pin SATA1-6)
7. IDE connector (40-1 pin PRI_IDE)
8. Standby power LED (SB_PWR)
9. Clear RTC RAM (CLRTC)
10. System panel connector (20-8 pin PANEL)
11. CPU overvoltage setting (3-1 pin OV_CPU)
12. USB connectors (10-1 pin USB78, USB910, USB1112)
13. Serial port connector (10-1 pin COM1)
14. Core Unlocker switch (CORE_UNLOCKER)
15. IEEE 1394a connector (10-1 pin IE1394_2)
16. Digital audio connector (4-1 pin SPDIF_OUT)
17. Front panel audio connector (10-1 pin AAFP)
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1-18
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Chapter 1: Product introduction 1-5

1.6 Central Processing Unit (CPU)

The motherboard comes with an AM3 socket designed for AMD® Phenom™ II / Athlon™ II / Sempron™ 100 Series Processors.
The CPU socket is not compatible with AMD® Opteron™ processors. Do not install an Opteron™ processor on this motherboard.

1.6.1 Installing the CPU

To install a CPU:
1. Locate the CPU socket on the motherboard.
2. Press the lever sideways to unlock the socket, then lift it up to a 90°–100° angle.
Socket lever
Ensure that the socket lever is lifted up to 90°–100° angle, otherwise the CPU will not t in
completely.
3. Position the CPU above the socket such that the CPU corner with the gold triangle matches the socket corner with a small triangle.
4. Carefully insert the CPU into the socket until it ts in place.
The CPU ts only in one correct
orientation. DO NOT force the CPU into the socket to prevent bending the pins and damaging the CPU!
1-6 ASUS M4N75TD
Small triangle
Gold triangle
5. When the CPU is in place, push down the socket lever to secure the CPU. The lever clicks on the side tab to indicate that it is locked.
6. Install a CPU heatsink and fan following the instructions that came with the heatsink package. You can also refer to section 1.6.2 Installing the heatsink and fan for instructions.
7. Connect the CPU fan cable to the CPU_FAN connector on the motherboard.
Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.

1.6.2 Installing the heatsink and fan

Ensure that you use only AMD-certied 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 heatsink ts
properly on the retention module base.
• The retention module base is already installed on the motherboard upon purchase.
• You do not have to remove the retention module base when installing the CPU or installing other motherboard components.
• If you purchased a separate CPU heatsink and fan assembly, ensure that a Thermal Interface Material is properly applied to the CPU heatsink or CPU before you install the heatsink and fan assembly.
CPU Fan
CPU Heatsink
Retention bracket
Retention Module Base
Retention bracket lock
Chapter 1: Product introduction 1-7
Your boxed CPU heatsink and fan assembly should come with installation instructions for
1
3
4
5
2
the CPU, heatsink, and the retention mechanism. If the instructions in this section do not match the CPU documentation, follow the latter.
2. Attach one end of the retention bracket to the retention module base.
3. Align the other end of the retention bracket to the retention module base. A clicking sound denotes that the retention bracket is in place.
Ensure that the fan and heatsink assembly perfectly ts the retention mechanism module
base, otherwise you cannot snap the retention bracket in place.
4. Push down the retention bracket lock on the retention mechanism to secure the heatsink and fan to the module base.
5. When the fan and heatsink assembly is in place, 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.
1-8 ASUS M4N75TD

1.7 System memory

1.7.1 Overview

The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are
developed for better performance with less power consumption. The gure illustrates the
location of the DDR3 DIMM sockets:
Channel Sockets
Channel A DIMM_A1 and DIMM_B1
Channel B DIMM_A2 and DIMM_B2
1.7.2 Memory congurations
You may install 1GB, 2GB and 4GB unbuffered ECC/non-ECC DDR3 DIMMs into the DIMM sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel conguration. Any excess memory from the higher-sized channel is then mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum compatibility, we recommend that you obtain memory modules from the same vendor.
• Due to the memory address limitation on 32-bit Windows OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less. For effective use of memory, we recommend that you install a 64-bit Windows OS when having 4GB or more memory installed on the motherboard.
• This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less (Memory chip capacity counts in Megabit, 8 Megabit/Mb = 1 Megabyte/MB).
• The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor-marked or at a higher frequency, refer to section 2.4 Ai Tweaker menu for manual memory frequency adjustment.
• For system stability, use a more efcient memory cooling system to support a full
memory load (4 DIMMs) or overclocking condition.
Chapter 1: Product introduction 1-9
M4N75TD Motherboard Qualied Vendors Lists (QVL)
DDR3-1600MHz capability
SS/DSChip
Vendor Part No. Size
A-DATA AX3U1600PB1G8-2P 2GB(2 x 1GB) SS - - 8-8-8-24 1.65-1.85 • • A-DATA AD31600E001GMU 3GB(3 x 1GB) SS - - 8-8-8-24 1.65-1.85 • • A-DATA AX3U1600PB1G8-3P 3GB(3 x 1GB) SS - - 8-8-8-24 1.65-1.85 • • A-DATA AX3U1600GB2G9-AG(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65~1.85 • • A-DATA AX3U1600XB2G7-EF(XMP) 4GB(2 x 2GB) DS - - 7-7-7-20 1.75-1.85 • • A-DATA AD31600F002GMU(XMP) 6GB(3 x 2GB) DS - - 7-7-7-20 1.75-1.85 • • A-DATA AX3U1600GB2G9-3G(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65~1.85 • • A-DATA AX3U1600GB2G9-3G(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65~1.85 • • A-DATA AX3U1600GB2G9-3G 6GB(3 x 2GB) DS - - 9-9-9-24 1.65~1.85 • • A-DATA AX3U1600XB2G7-FF(XMP) 6GB(3 x 2GB) DS - - 7-7-7-20 1.75-1.85 • • CORSAIR TR3X3G1600C8D 3GB(3 x 1GB) SS - - 8-8-8-24 1.65 • CORSAIR TR3X3G1600C8DVer2.1(XMP) 3GB(3 x 1GB) SS - - 8-8-8-24 1.65 • CORSAIR TR3X3G1600C9Ver1.1(XMP) 3GB(3 x 1GB) SS - - 9-9-9-24 1.65 • CORSAIR CMD4GX3M2A1600C8(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.65 • CORSAIR CMG4GX3M2A1600C7(XMP) 4GB(2 x 2GB) DS - - 7-7-7-20 1.65 • CORSAIR CMX4GX3M2A1600C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65 • CORSAIR TR3X6G1600C8D 6GB(3 x 2GB) DS - - 8-8-8-24 1.65 • CORSAIR TR3X6G1600C8DVer2.1(XMP) 6GB(3 x 2GB) DS - - 8-8-8-24 1.65 • CORSAIR TR3X6G1600C9Ver2.1(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65 • CORSAIR CMD8GX3M4A1600C8(XMP) 8GB(4 x 2GB) DS - - 8-8-8-24 1.65 • CORSAIR CMX8GX3M4A1600C9(XMP) 8GB(4 x 2GB) DS - - 9-9-9-24 1.65 • Crucial BL12864BA1608.8SFB(XMP) 1GB SS - - - 1.8 • Crucial BL25664BN1608.16FF(XMP) 2GB DS - - 8-8-8-24 1.65 • G.SKILL F3-12800CL9D-2GBNQ 2GB(2 x 1GB) SS - - - 1.6 • G.SKILL F3-12800CL9D-4GBRL 2GB(2 x 1GB) SS - - - 1.6 • G.SKILL F3-12800CL7D-4GBRH(XMP) 4GB(2 x 2GB) DS - - 7-7-7-24 1.65 • G.SKILL F3-12800CL8D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.6 • G.SKILL F3-12800CL9D-4GBECO(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.35 • G.SKILL F3-12800CL8T-6GBPI(XMP) 6GB(3 x 2GB) DS - - 8-8-8-21 1.6~1.65 • • G.SKILL F3-12800CL9T-6GBNQ 6GB(3 x 2GB) DS - - 9-9-9-24 1.5-1.6 • KINGMAX FLGD45F-B8MF7(XMP) 1GB SS - - - • KINGMAX FLGE85F-B8MF7(XMP) 2GB DS - - - • KINGSTON KHX1600C9D3K3/12GX(XMP) 12GB(3 x 4GB) DS - - - 1.65 • KINGSTON KHX1600C9D3K3/12GX(XMP) 12GB(3 x 4GB) DS - - 9 1.65 • KINGSTON KHX1600C8D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65 • KINGSTON KHX1600C8D3K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65 • KINGSTON KHX1600C8D3T1K2/4GX(XMP) 4GB(2 x 2GB) DS - - 8 1.65 • KINGSTON KHX1600C9D3K2/4G 4GB(2 x 2GB) DS - - - 1.7~1.9 • KINGSTON KHX1600C9D3K3/6GX(XMP) 6GB(3 x 2GB) DS - - 9 1.65 • OCZ OCZ3OB1600LV4GK 4GB(2 x 2GB) DS - - 9-9-9 1.65 • OCZ OCZ3P1600LV4GK 4GB(2 x 2GB) DS - - 7-7-7 1.65 • OCZ OCZ3X16004GK(XMP) 4GB(2 x 2GB) DS - - 7-7-7 1.9 • OCZ OCZ3G1600LV6GK 6GB(3 x 2GB) DS - - 8-8-8 1.65 • OCZ OCZ3X1600LV6GK(XMP) 6GB(3 x 2GB) DS - - 8-8-8 1.65 • OCZ OCZ3X1600LV6GK(XMP) 6GB(3 x 2GB) DS - - 8-8-8 1.65 • Super Talent WP160UX4G8(XMP) 4GB(2 x 2GB) DS - - 8 - • Super Talent WP160UX4G9(XMP) 4GB(2 x 2GB) DS - - 9 - • Super Talent WB160UX6G8(XMP) 6GB(3 x 2GB) DS - - - - • Super Talent WB160UX6G8(XMP) 6GB(3 x 2GB) DS - - 8 - • Cell Shock CS322271 2GB(2 x 1GB) DS - - 7-7-7-14 1.7-1.9 • EK Memory EKM324L28BP8-I16(XMP) 4GB(2 x 2GB) DS - - 9 - • Elixir M2Y2G64CB8HA9N-DG(XMP) 2GB DS - - - - • Mushkin 996657 4GB(2 x 2GB) DS - - 7-7-7-20 - • Mushkin 998659(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.5-1.6 • Patriot PVT33G1600ELK 3GB(3 x 1GB) SS - - 9-9-9-24 1.65 • PATRIOT PGS34G1600LLKA 4GB(2 x 2GB) DS - - 7-7-7-20 1.7 • Patriot PVS34G1600ELK 4GB(2 x 2GB) DS - - 9-9-9-24 1.8 • Patriot PVS34G1600LLK(XMP) 4GB(2 x 2GB) DS - - 7-7-7-20 1.9 • Patriot PVS34G1600LLKN 4GB(2 x 2GB) DS - - 7-7-7-20 2.0 • Patriot PVT36G1600ELK 6GB(3 x 2GB) DS - - 9-9-9-24 1.65 • Patriot PVT36G1600ELK 6GB(3 x 2GB) DS - - 9-9-9-24 1.65 • Patriot PVT36G1600LLK(XMP) 6GB(3 x 2GB) DS - - 8-8-8-24 1.65
BoxP/N:TXD34096M1600HC6DC-L
Team
(TXD32048M1600HC6-L)(XMP)
4GB(2 x 2GB) DS - - 6-7-6-18 1.65
Brand
Chip
Timing Voltage
NO.
DIMM socket support (Optional) 1 DIMM 2 DIMM 4 DIMM
1-10 ASUS M4N75TD
DDR3-1333MHz capability
Vendor Part No. Size
A-DATA AD3133301GOU 1GB SS A-DATA AD30908C8D-15IG - - • A-DATA AD31333002GOU 2GB DS A-DATA AD30908C8D-15IG - - • A-DATA AD3U1333B2G9-2 2GB DS A-DATA AD30908C8D-15IG - - • A-DATA AX3U1333PB2G7-2P 4GB(2 x 2GB) DS - - 7-7-7-20 1.65-1.85 • • A-DATA AD3U1333C4G9-B 4GB DS Hynix H5TQ2G83AFRH9C 1333-9-9-9-24 - • A-DATA AD31333E002G0U 6GB(3 x 2GB) DS - - 7-7-7-20 1.65-1.85 • • A-DATA AX3U1333PB2G7-3P 6GB(3 x 2GB) DS - - 7-7-7-20 1.65-1.85 • • Apacer 78.A1GC6.9L1 2GB DS Apacer AM5D5808DEWSBG 9 - • CORSAIR TR3X3G1333C9 (Ver2.1) 3GB(3 x 1GB) SS - - 9-9-9-24 1.5 • CORSAIR CM3X1024-1333C9DHX 1GB DS - - - 1.1
BoxP/N:TWIN3X2048-1333C9
CORSAIR
(CM3X1024-1333C9)Ver1.1
CORSAIR CM3X2G1333C9 2GB DS - - 9-9-9-24 1.5
BoxP/N:TW3X4G1333C9DHX
CORSAIR
(CM3X2048-1333C9DHX)Ver3.2 CORSAIR TR3X6G1333C9 (Ver2.1) 6GB(3 x 2GB) DS - - 9-9-9-24 1.5 • CORSAIR CMX8GX3M4A1333C9 8GB(4 x 2GB) DS - - 9-9-9-24 1.5 • Crucial CT12864BA1339.8FF 1GB SS MICRON D9KPT 9 - • Crucial CT12864BA1339.8SFD 1GB SS MICRON MT8JF12864AY-1G4D1 - - • Crucial CT12872BA1339.9FF 1GB SS MICRON D9KPT(ECC) 9 - • Crucial BL25664BN1337.16FF(XMP) 2GB DS - - 7-7-7-24 1.65 • Crucial CT25664BA1339.16FF 2GB DS MICRON D9KPT 9 - • Crucial CT25664BA1339.16SFD 2GB DS MICRON D9JNM - - • Crucial CT25672BA1339.18FF 2GB DS MICRON D9KPT(ECC) 9 - • Crucial BL25664BA1336.16SFB1 4GB(2 x 2GB) DS NA - 6-6-6-20 1.8 • ELPIDA EBJ10UE8BAW0-DJ-E 1GB SS ELPIDA J1108BABG-DJ-E 9 - • ELPIDA EBJ10UE8BDF0-DJ-F 1GB SS ELPIDA J1108BDSE-DJ-F - - • ELPIDA EBJ10UE8EDF0-DJ-F 1GB SS ELPIDA J1108EDSE-DJ-F - - • ELPIDA EBJ21UE8BAW0-DJ-E 2GB DS ELPIDA J1108BABG-DJ-E 9 - • ELPIDA EBJ21UE8BDF0-DJ-F 2GB DS ELPIDA J1108BDSE-DJ-F - - • ELPIDA EBJ21UE8EDF0-DJ-F 2GB DS ELPIDA J1108EDSE-DJ-F - - • G.SKILL F3-10600CL8D-2GBHK 2GB(2 x 1GB) SS - - - 1.65 • G.SKILL F3-10666CL7T-6GBPK(XMP) 2GB DS - - 7-7-7-18 1.5-1.6 • • G.SKILL F3-10666CL7D-4GBPI(XMP) 4GB(2 x 2GB) DS - - 7-7-7-21 1.5 • G.SKILL F3-10666CL7D-4GBRH(XMP) 4GB(2 x 2GB) DS - - 7-7-7-21 1.5 • G.SKILL F3-10666CL8D-4GBECO(XMP) 4GB(2 x 2GB) DS - - 8-8-8-24 1.35 • G.SKILL F3-10666CL8D-4GBHK(XMP) 4GB(2 x 2GB) DS - - 8-8-8-21 1.5-1.6 • • G.SKILL F3-10666CL8D-4GBRM(XMP) 4GB(2 x 2GB) DS - - 8-8-8-21 1.5-1.6 • • G.SKILL F3-10666CL9T-6GBNQ 6GB(3 x 2GB) DS - - 9-9-9-24 1.5 • GEIL GG34GB1333C9DC 4GB(2 x 2GB) DS GEIL GL1L128M88BA12N 9-9-9-24 1.3 • GEIL GV34GB1333C7DC 4GB(2 x 2GB) DS - - 7-7-7-24 1.5 • Hynix HMT112U6BFR8C-H9 1GB SS Hynix H5TQ1G83BFR 9 - • Hynix HMT125U6BFR8C-H9 2GB DS Hynix H5TQ1G83BFR 9 - • Hynix HMT125U6BFR8C-H9 2GB DS Hynix H5TQ1G83BFRH9C 9 - • KINGMAX FLFD45F-B8KG9 1GB SS KingMax KFB8FNGBF-ANX-15A - • KINGMAX FLFE85F-B8KG9 2GB DS KingMax KFB8FNGBF-ANX-15A - • KINGSTON KVR1333D3N9/1G 1G SS Kingston D1288JELDPGD9U - 1.5 • KINGSTON KVR1333D3N9/2G 2GB DS Qimonda IDSH1G-03A1F1C-13H 9 1.5 • KINGSTON KVR1333D3E9S/4G 4GB DS SAMSUNG K4B2G0846B-HCH9 - 1.5 • KINGSTON KVR1333D3N9/4G 4GB DS SAMSUNG K4B2G0846B-HCH9 9 1.5 • MICRON MT8JTF12864AZ-1G4F1 1GB SS MICRON 9FF22 D9KPT 9 - • MICRON MT8JTF12864AZ-1G4F1 1GB SS MICRON D9KPT 9 - • MICRON MT9JSF12872AZ-1G4F1 1GB SS MICRON D9KPT(ECC) 9 - • MICRON MT16JF25664AZ-1G4F1 2GB DS MICRON D9KPT 9 - • MICRON MT16JTF25664AZ-1G4F1 2GB DS MICRON 9FF22 D9KPT 9 - • MICRON MT18JSF25672AZ-1G4F1 2GB DS MICRON D9KPT(ECC) 9 - • OCZ OCZ3P1333LV3GK 3GB(3 x 1GB) SS - - 7-7-7 1.65 • OCZ OCZ3G1333ULV4GK 4GB(2 x 2GB) DS - - 8-8-8 1.65 • OCZ OCZ3P1333LV4GK 4GB(2 x 2GB) DS - - 7-7-7 1.65 • OCZ OCZ3G1333LV6GK 6GB(3 x 2GB) DS - - 9-9-9 1.65 • OCZ OCZ3P1333LV6GK 6GB(3 x 2GB) DS - - 7-7-7 1.65
2GB(2 x 1GB) DS - - 9-9-9-24 1.70
4GB(2 x 2GB) DS - - 9-9-9-24 1.70
SS/DSChip
Brand
Chip NO. Timing Voltage
DIMM socket support (Optional)
1 DIMM 2 DIMM 4 DIMM
Chapter 1: Product introduction 1-11
DDR3-1333MHz capability (continued)
Vendor Part No. Size
OCZ OCZX1333LV6GK(XMP) 6GB(3 x 2GB) DS NA - 8-8-8 1.6 • PSC AL7F8G73D-DG1 1GB SS PSC A3P1GF3DGF - - • PSC AL8F8G73D-DG1 2GB DS PSC A3P1GF3DGF - - • SAMSUNG M378B2873DZ1-CH9 1GB SS SAMSUNG K4B1G0846D 9 - • SAMSUNG M378B2873EH1-CH9 1GB SS SAMSUNG K4B1G0846E - - • SAMSUNG M391B2873DZ1-CH9 1GB SS SAMSUNG K4B1G0846D(ECC) 9 - • SAMSUNG M378B5673DZ1-CH9 2GB DS SAMSUNG K4B1G0846D 9 - • SAMSUNG M378B5673EH1-CH9 2GB DS SAMSUNG K4B1G0846E - - • SAMSUNG M391B5673DZ1-CH9 2GB DS SAMSUNG K4B1G0846D(ECC) 9 - • SAMSUNG M378B5273BH1-CH9 4GB DS SAMSUNG K4B2G0846B-HCH9 9 - • Super
W1333UX2G8(XMP) 2GB(2 x 1GB) SS - - 8 1.8
Talent Asint SLY3128M8-EDJ 1GB SS Asint DDRIII1208-DJ - - • Asint SLY3128M8-EDJE 1GB SS ELPIDA J1108BASE-DJ-E - - • Asint SLZ3128M8-EDJ 2GB DS Asint DDRIII1208-DJ - - • Asint SLZ3128M8-EDJE 2GB DS ELPIDA J1108BASE-DJ-E - - • ASUS N/A 1GB DS - - - - • ATP AQ28M64A8BJH9S 1GB SS SAMSUNG K4B1G0846E - - • ATP AQ28M72D8BJH9S 1GB SS SAMSUNG K4B1G0846D(ECC) - - • ATP AQ56M64B8BJH9S 2GB DS SAMSUNG K4B1G0846D - - • ATP AQ56M72E8BJH9S 2GB DS SAMSUNG K4B1G0846D(ECC) - - • BUFFALO FSH1333D3G-T3G(XMP) 3GB(3 x 1GB) SS - - 7-7-7-20 - • EK Memory EKM324L28BP8-I13 4GB(2 x 2GB) DS - - 9 - • Elixir M2Y2G64CB8HA9N-CG 2GB DS - - - - • Elixir M2Y2G64CB8HC9N-CG 2GB DS - - - - • Patriot PVT33G1333ELK 3GB(3 x 1GB) SS - - 9-9-9-24 1.65 • Patriot PVS34G1333ELK 4GB(2 x 2GB) DS - - 9-9-9-24 1.5 Patriot PVS34G1333LLK 4GB(2 x 2GB) DS - - 7-7-7-20 1.7 • Patriot PVT36G1333ELK 6GB(3 x 2GB) DS - - 9-9-9-24 1.65 • Silicon
SP001GBLTU1333S01 1GB SS NANYA NT5CB128M8AN-CG - -
Power Silicon
SP001GBLTU133S02 1GB SS S-POWER I0YT3E0 9 -
Power Silicon
SP002GBLTU133S02 2GB DS S-POWER I0YT3E0 9 -
Power UMAX E41302GP0-73BDB 2GB DS UMAX U2S24D30TP-13 -
SS/DSChip
Brand
Chip NO. Timing Voltage
DIMM socket support (Optional)
1 DIMM 2 DIMM 4 DIMM
1-12 ASUS M4N75TD
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