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”).
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED T O THE IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANT ABILITY 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.
Product warranty or service will not be extended if: (1) the product is repaired, modified or
altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2)
the serial number of the product is defaced or missing.
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 identification or
explanation and to the owners’ benefit, without intent to infringe.
• QuickStart and JumperFree are trademarks of ASUSTeK Computer Inc.
• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.
• IBM and OS/2 are registered trademarks of International Business Machines.
• XGstudio and SoftSynthesizer are registered trademarks of Yamaha Corporation.
• Symbios is a registered trademark of Symbios Logic Corporation.
• Windows and MS-DOS are registered trademarks of Microsoft Corporation.
• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
The product name and revision number are both printed on the product itself. Manual revi-
sions are released for each product design represented by the digit before and after the period
of the manual revision number. Manual updates are represented by the third digit in the manual
revision number.
For previous or updated manuals, BIOS, drivers, or product release information, contact ASUS
at http://www.asus.com.tw or through any of the means indicated on the following page.
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 MA Y APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
7.1PCI-L101 Fast Ethernet Card ................................................. 117
7.2S370 Series CPU Cards .......................................................... 119
INDEX ................................................................................................. 121
ASUS P3W User’s Manual5
FCC & DOC COMPLIANCE
Federal Communications Commission Statement
This device complies with FCC Rules Part 15. 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:
•Re-orient 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.
WARNING!Any changes or modifications to this product not expressly ap-
proved by the manufacturer could void any assurances of safety or performance
and could result in violation of Part 15 of the FCC Rules.
Reprinted from the Code of Federal Regulations #47, part 15.193, 1993. Washington DC: Office of the Federal Register , National Archives and Records Administration, U.S. Government Printing Office.
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.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
6ASUS P3W User’s Manual
1. INTRODUCTION
1.1How This Manual Is Organized
This manual is divided into the following sections:
1) INTRODUCTIONManual information and checklist
2) FEATURESProduct information and specifications
3) HARDWARE SETUPInstructions on setting up the motherboard
4) BIOS SETUPInstructions on setting up the BIOS software
5) SOFTWARE SETUPInstructions on setting up the included software
6) SOFTWARE REFERENCE Reference material for the included software
7) APPENDIXOptional items
1.2Item Checklist
Check that your package is complete. If you discover damaged or missing items,
please contact your retailer.
(1) ASUS Motherboard
Sections/Checklist
1. INTRODUCTION
(1) Universal Retention Mechanism for SECC2/SECC/SEPP processors
(1) 40-pin 80-conductor ribbon cable for internal UltraDMA/66 or UltraDMA/
33 IDE drives
(1) Ribbon cable for (1) 5.25” and (2) 3.5” floppy disk drives
(1) Serial COM2 connector with bracket
(1) Bag of spare jumper caps
(1) Support CD with drivers and utilities
(1) This Motherboard User’s Manual
ASUS consumer infrared set (optional)
ASUS IrDA-compliant infrared module (optional)
ASUS S370 Series CPU card (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 ethernet card (optional)
ASUS P3W User’s Manual7
2.1The ASUS P3W Motherboard
The P3W motherboard from ASUS is carefully designed for the demanding PC user
who wants many smart features in a small package. So what’s so smart about the
ASUS P3W motherboard?
2.1.1Specifications
•Latest Intel Processor Support! Supports Intel Pentium® III (450MHz and
2. FEATURES
Specifications
•Latest Intel 810 Chipset! Features 100/66MHz FSB Intel 810 chipset with the
•Multi-Cache! Supports processors with 512, 256, 128, or 0KB Pipelined Burst
2. FEATURES
faster), Pentium® II (233MHz to 450MHz), and Celeron™ (266MHz and faster)
processors.
Accelerated Hub Architecture, which provides direct connections between the
810 chipset and subsystems such as IDE controllers, USB controllers, and PCI
add-in cards.
Level 2 Cache.
•Integrated Graphics! Controller supports 3D hyper pipelined architecture, par-
allel data processing and compression, precise pixel interpolation, full 2D hardware acceleration, and motion video acceleration.
•ASUS Graphics Driver! You can gain about 12% performance over that of the
standard graphics driver (2D high-end graphics W inMark) using ASUS’ custom
graphics driver. ASUS custom graphics driver also provides more features and
provides selection of higher refresh rates and resolutions.
•V ersatile Memory Support! DRAM controller supports asymmetrical address-
ing and three DIMM sockets support Intel PC100-compliant SDRAMs (16, 32,
64, 128, or 256MB) up to 512MB. (supports a maximum of 4 sides)
•JumperFree™ Mode! Allows processor settings and easy overclocking of fre-
quency and Vcore voltage all through BIOS setup when JumperFree™ mode is
enabled. Easy-to-use DIP switches instead of jumpers are included incase you
want to manually adjust the processor’s external frequency.
•Smart Slots! Six 32-bit PCI (rev 2.2) slots and one 16-bit ISA expansion slot for
greater expansion flexibility. PCI supports up to 133MB/s maximum throughput. Each PCI slot can support a Bus Master PCI card (such as SCSI or LAN
cards).
•Latest Low Pin Count Multi-I/O: Provides two high-speed UAR T compatible
serial ports and one parallel port with EPP and ECP capabilities.
•Integrated IDE! Controller supports UltraDMA/66 up to 66MB/s, UltraDMA/
ing through the ASUS ASIC. The onboard battery supports detection even when
normal power is removed and through a new design, battery drain is even lower
than the RTC used for keeping time!
•Firmware Hub! Provides security and other latest power computing features.
•Monitoring for your PC’s Health! Provided ASUS PC Probe or Intel LDCM
EEPROM), offering enhanced ACPI for W indows 98 compatibility , built-in firmware-based virus protection, and autodetection of most devices for virtually automatic setup.
•Smart BIOS! 4Mbit firmware gives a new easy-to-use interface which provides
more control and protection over the motherboard. Provides Vcore and CPU/
SDRAM frequency adjustments, boot block write protection, and HD/SCSI/MO/
ZIP/CD/Floppy boot selection. Hardware random number generator supports new
security software for data protection and secured Internet transactions.
2. FEATURES
Optional Component(s)
2.1.2Optional Component(s)
The following onboard component(s) are optional at the time of purchase:
•No Messy Wires! Integrated Consumer IR and Serial IR supports an optional
remote control package for wireless interfacing with external peripherals, personal gadgets, or an optional remote controller.
ASUS P3W User’s Manual9
2. FEATURES
Performance
2. FEATURES
2.1.3Performance
•UltraPerformance! Onboard IDE Bus Master controller with two connectors
that support four IDE devices in two channels. Supports UltraDMA/66, UltraDMA/
33 (IDE DMA Mode 2), PIO Modes 3 & 4, and supports Enhanced IDE devices,
such as Tape Backup, CD-ROM, CD-R/RW, and LS-120 drives.
•Dual Speeds! CPU frequency can operate at either 66MHz or 100MHz while
system memory operates at either 100MHz or 66MHz. (100MHz CPU with
66MHz SDRAM setting not supported). For maximum performance, 100MHz/
100MHz synchronous host/DRAM clock is recommended.
•Double or Quadruple the IDE T ransfer Speed! IDE transfers using UltraDMA/
33 Bus Master IDE can handle rates up to 33MB/s and up to 66MB/s using
UltraDMA/66 technology. The best of all is that these new technology is compatible with existing ATA-2 IDE specifications so there is no need to upgrade
current IDE devices or cables.
•SDRAM Optimized Performance! ASUS smart series motherboards support the
new generation memory , Synchronous Dynamic Random Access Memory (SDRAM),
which increases the data transfer rate to 800MB/s max using PC100-compliant
SDRAM.
•ACPI Ready! ACPI (Advanced Configuration and Power Interface) is also imple-
mented on all ASUS smart series motherboards. ACPI provides more Energy
Saving Features for future operating systems (OS) supporting OS Direct Power
Management (OSPM) functionality . W ith these features implemented in the OS,
PCs can be ready around the clock, yet satisfy all the energy saving standards.
To fully utilize the benefits of ACPI, an ACPI-supported OS, such as Windows
98, must be used.
•Suspend and Go!Suspend-To-RAM (STR) provides maximum power savings
as an alternative to leaving the computer ON and QuickStart™ so that you do
not fall asleep waiting for system bootup. (STR requires OS support and does
not support ISA cards; ISA cards may fail to work coming out of STR mode.)
•New Compliancy! Both the BIOS and hardware levels of the motherboard meet
PC’99 compliancy . The new PC’99 requirements for systems and components are
based on the following high-level goals: Support for Plug and Play compatibility
and power management for configuring and managing all system components,
and 32-bit device drivers and installation procedures for W indows 95/98/NT . Colorcoded connectors and descriptive icons make identification easy as required by
PC’99.
•Highest Audio Quality! AC’97 DAC/ADC built into the audio codec reduces
noise to improve audio quality and performance for a SNR (signal to noise ratio)
of +90dB. These features greatly improve voice synthesis and recognition.
•Extreme Graphics! The integrated motion compensation allows for smooth
MPEG1 or MPEG2 video playback. Fast 3D graphics engine allows for an exciting gameplay experience.
10ASUS P3W User’s Manual
2. FEATURES
2.1.4Intelligence
•Fan Status Monitoring and Alarm! To prevent system overheat and system
damage, the CPU, power supply, and system fans can be monitored for RPM
and failure. All the fans are set for its normal RPM range and alarm thresholds.
•Temperature Monitoring and Alert! CPU temperature is monitored by the
ASUS ASIC through the CPU’s internal thermal diode (on Pentium III, Deschutes
Pentium II, and PPGA 370 Celeron in conjunction with the ASUS S370-D or
S370-L CPU card, see 7.2 S370 Series CPU Cards) to prevent system overheat
and system damage. The temperature reported by the internal thermal diode is
the actual processor core temperature as opposed to the less accurate surface
temperature.
•Voltage Monitoring and Alert! System voltage levels are monitored to ensure
stable current to critical motherboard components. Voltage specifications are
more critical for future processors, so monitoring is necessary to ensure proper
system configuration and management.
Intelligence
2. FEATURES
•System Resources Alert! T oday’s operating systems such as Windows 98, W in-
dows NT , and OS/2, require much more memory and hard drive space to present
enormous user interfaces and run large applications. The system resource monitor will warn the user before the system resources are used up to prevent possible application crashes. Suggestions will give the user information on managing their limited resources more efficiently.
•Dual Function Power Button! Through the BIOS, the power button can be
defined as the “Standby” (a.k.a. Suspend or Sleep) button or as the Soft-Off (see
ATX Power Switch Lead in 3.8 External Connectors for more information)
button. Regardless of the setting, pushing the power button for more than 4
seconds will enter the Soft-Off mode.
•Remote Ring On (requires modem)! This allows a computer to be turned on
remotely through an internal or external modem. With this benefit on-hand, users
can access any information from their computers from anywhere in the world!
•Message LED (requires ACPI OS support)! Chassis LEDs now act as infor-
mation providers. Through the way a particular LED illuminates, the user can
determine the stage the computer is in. A simple glimpse provides useful information to the user.
•Peripheral Power Up! Keyboard or Mouse power up can be enabled or dis-
abled through BIOS setup to allow the computer to be powered ON using your
keyboard or mouse.
ASUS P3W User’s Manual11
2.2Motherboard Part Definitions
The following are part descriptions for the motherboard parts shown on the next
page.
Part Definitions
2. FEATURES
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
2. FEATURES
ATX Power Connector for connection to an ATX power supply
1
SEC CPU Socket
2
Intel 810 (GMCH0) Integrated Graphics Chipset
3
Three DIMM Sockets
4
Primary and Secondary IDE Connectors
5
Feature Setting DIP Switches
6
Floppy Disk Drive Connector
7
Four Mbit Firmware Hub (programmable BIOS)
8
ASUS ASIC with Integrated Hardware Monitor
9
Intel I/O Controller Hub (ICH)
Low Pin Count Multi-I/O Chipset
Wake-On-Ring Connector
Wake-On-LAN Connector
One ISA Slot
PCI to ISA Bridge
Six PCI Slots
AC’97 V2.1 Compliant Audio CODEC
Audio Modem Riser (AMR) Connector
Joystick, MIDI, Line Out, Line In, Microphone In Connectors
VGA Monitor Output Connector
Parallel Connector
Serial COM1 Connector
USB Connectors
PS/2 Mouse, PS/2 Keyboard Connectors
22) KEYLOCK (PANEL)p.45 System Power LED Lead (3-1 pins)
23) KEYLOCK (PANEL)p.45 Keyboard Lock Switch Lead (2 pins)
24) SPEAKER (PANEL)p.45 System Warning Speaker Connector (4 pins)
25) RESET (PANEL)p.45 Reset Switch Lead (2 pins)
26) PWR (PANEL)p.45 ATX Power / Soft-Off Switch Lead (2 pins)
27) SMI (PANEL)p.45 System Management Interrupt Switch Lead (2 pins)
28) LED (PANEL)p.45 System Message LED (2 pins)
29) ATXPWRp.46 ATX Power Supply Connector (20 pins)
30) JTPWRp.46 Thermal Sensor Connector (2 pins)
Layout Contents
3. H/W SETUP
3. HARDWARE SETUP
16ASUS P3W User’s Manual
3. HARDWARE SETUP
3.3Hardware Setup Procedure
Before using your computer, you must complete the following steps:
• Check Motherboard Settings
• Install Memory Modules
• Install the Central Processing Unit (CPU)
• Install Expansion Cards
• Connect Ribbon Cables, Panel Wires, and Power Supply
3.4Motherboard Settings
This section explains in detail how to change your motherboard’s function settings
through the use of switches and/or jumpers.
WARNING! Computer motherboards and expansion cards contain very delicate
Integrated Circuit (IC) chips. To protect them against damage from static electricity, you should follow some precautions whenever you work on your computer.
1. Unplug your computer when working on the inside.
2. Use a grounded wrist strap before handling computer components. If you do
not have one, touch both of your hands to a safely grounded object or to a metal
object, such as the power supply case.
3. Hold components by the edges and try not to touch the IC chips, leads or connectors, or other components.
4. Place components on a grounded antistatic pad or on the bag that came with the
component whenever the components are separated from the system.
3. H/W SETUP
Motherboard Settings
ASUS P3W User’s Manual17
3. HARDWARE SETUP
Motherboard Feature Settings (DIP Switches–DSW)
Some of the motherboard’s onboard functions are adjusted through the DIP switches.
The white block represents the switch’s position. The example below shows all the
switches in the OFF position.
Motherboard Settings
P3W DIP Switches
3. H/W SETUP
1)JumperFree™ Mode Setting (JEN)
This jumper allows you to enable or disable the JumperFree™ mode. The
JumperFree™ mode allows processor settings to be made through the BIOS
setup (see 4.4 Advanced Menu).
NOTE: For JumperFree™ mode, DIP switches 2-6 must be set to OFF.
The onboard audio CODEC may be enabled or disabled using all of these jumpers. Disable the onboard audio CODEC if you are using an ISA or PCI audio
card on any of the expansion slots or a primary AMR on the AMR slot (see AMR
Slot later in this section). If using an ISA or PCI audio expansion card, On-board AC’97 Audio Controller in 4.4.2 I/O Device Configuration must also
be disabled.
For processors with locked frequency multiples, there is no way to exceed the
specified multiple whether through motherboard settings or BIOS setup. With
unlocked processors, exceeding the specified multiple is possible through BIOS
setup. Exceeding the specified multiple may result in hanging during bootup. If
this occurs, enable Safe Mode to force a multiple of 2 in order to enter BIOS
setup to correct the problem.
SettingSAFE_MD
Normal[1-2] (default)
Safe Mode[2-3]
10101
Motherboard Settings
3. H/W SETUP
P3W Safe Mode Setting
4)Automatic Timeout Reboot Setting (NO_REBOOT)
The motherboard is set so that when the BIOS detects a hang (timeout) during
bootup, the motherboard will automatically reboot. If rebooting is repeating ineffectively, set this jumper to No Reboot to disable auto-reboot.
SettingNO_REBOOT
Normal[1-2] (default)
No Reboot[2-3]
SAFE_MD
P3W
®
10101
3
2
1
Normal
(Default)
3
2
1
Safe Mode
NO_REBOOT
P3W
®
3
2
1
Normal
(Default)
3
2
1
No Reboot
P3W Reboot Setting
20ASUS P3W User’s Manual
3. HARDWARE SETUP
5)PCI 3 Volt Setting (PCI3VSEL)
This jumper allows you to select the voltage supplied to PCI devices. If you
have PCI devices that require auxiliary power, set this jumper to STB.
SettingPCI3VSEL
Normal[1-2]
Standby[2-3] (default)
10101
P3W
®
PCI3VSEL
123
NormalStandby (STB)
2
1
3
(Default)
P3W PCI 3Volt Selection
6)I/O Voltage Setting (VIO)
This jumper allows you to select the voltage supplied to the DRAM, chipset,
PCI, and the CPU’s I/O buffer. The default voltage should be used unless pro-
cessor overclocking requires a higher voltage.
SettingVIO
Normal[1-2] (default)
3.66V[2-3]
10101
VIO
123
P3W
®
Normal
(default)
123
3.66Volt
3. H/W SETUP
Motherboard Settings
P3W I/O Voltage Setting
WARNING! Using a higher voltage may help when overclocking but may result
in the shortening of your computer component’s life. It is strongly recommended
that you leave this setting on its default.
ASUS P3W User’s Manual21
3. HARDWARE SETUP
7)CPU External Frequency Setting (DSW–SW2-6)
This option tells the clock generator what frequency to send to the CPU, DRAM,
and the PCI bus. This allows the selection of the CPU’s External frequency . The
CPU External Frequency multiplied by the Frequency Multiple equals the CPU’sInternal frequency (the advertised CPU speed). NOTE: Y ou may set the memory
speed independently from the CPU External Frequency. Depending on your
memory type, select the appropriate “SDRAM” speed along with the appropriate “CPU” speed.
IMPORTANT: When JumperFree mode is enabled, use BIOS setup in place of
these switches (see CPU Speed in 4.4 Advanced Menu).
NOTE: For JumperFree mode, DIP switches 2-6 must be set to OFF.
Motherboard Settings
3. H/W SETUP
P3W CPU External Clock
(BUS) Frequency Selection
CPU
CPU
CPU
CPU
ON
1 2345
→
66MHz
→
100MHz
ON
1 2345
→
72MHz
→
108MHz
ON
1 2345
→
104MHz
→
104MHz
ON
1 2345
→
123MHz
→
123MHz
DSW
10101
SDRAM
P3W
®
SDRAM
SDRAM
SDRAM
6
6
6
6
ON
1 2345
69MHz
103MHz
ON
1 2345
75MHz
112MHz
ON
1 2345
109MHz
109MHz
ON
1 2345
133MHz
133MHz
ON
6
1 2345
ON
6
1 2345
ON
6
1 2345
ON
6
1 2345
70MHz
105MHz
76MHz
114MHz
111MHz
111MHz
142MHz
142MHz
6
6
6
6
ON
1 2345
71MHz
106MHz
ON
1 2345
100MHz
100MHz
ON
1 2345
117MHz
117MHz
6
6
6
WARNING! CPU frequencies other than 66MHz and 100MHz are not guaran-
teed to be stable. Premature wearing of the processor may result when
overclocking. Be sure that the DIMM you use can handle the specified SDRAM
MHz or else bootup will not be possible.
22ASUS P3W User’s Manual
3. HARDWARE SETUP
External Frequency Table
The following table is for use by experienced motherboard installers only . Overclocking can result in system instability or even shortening the life of the processor .
CPUSDRAMPCIFrequency Selection Switches
(MHz)(MHz)(MHz)23456
69.00103.5034.50[ON][ON][ON][ON][ON]
70.00105.0035.00[OFF][ON][ON][ON][ON]
71.00106.5035.50[ON][OFF][ON][ON][ON]
66.82100.2333.41[OFF][OFF][ON][ON][ON]
72.00108.0036.00[ON][ON][OFF][ON][ON]
75.00112.5037.50[OFF][ON][OFF][ON][ON]
76.60114.9038.40[ON][OFF][OFF][ON][ON]
111.77111.7737.26[ON][ON][ON][ON][OFF]
104.78104.7834.93[OFF][ON][ON][ON][OFF]
109.51109.5136.50[ON][OFF][ON][ON][OFF]
100.74100.7433.57[OFF][OFF][ON][ON][OFF]
117.00117.0039.00[ON][ON][OFF][ON][OFF]
123.75123.7541.25[OFF][ON][OFF][ON][OFF]
133.33133.3344.44[ON][OFF][OFF][ON][OFF]
142.50142.5047.50[OFF][OFF][OFF][ON][OFF]
3. H/W SETUP
Motherboard Settings
NOTE: The PCI clock is equal to 1/3 the speed of the SDRAM. PCI’s specification
allows for up to 33MHz, therefore using PC100-compliant DIMM and setting
SDRAM to about 100MHz is recommended. For updated processor settings, visit
ASUS’s web site (see ASUS CONTACT INFORMATION)
ASUS P3W User’s Manual23
3.5System Memory (DIMM)
NOTE: No hardware or BIOS setup is required after adding or removing memory.
This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are
available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Ac-
cess Memory (SDRAM) of 16, 32, 64, 128MB, or 256MB.
This chipset does not support ECC. However, ECC memory modules may still be
used, but the ECC function will not be available.
Memory speed setup is recommended through SDRAM Configuration in 4.4.1
Chip Configuration.
Install memory in any combination as follows:
Location168-pin DIMM SDRAMTotal Memory
DIMM1Single-Sided
System Memory
3. H/W SETUP
(Rows 0&1)Double-Sidedx1
DIMM2Single-Sided (must be occupied before DIMM3)
(Rows 2&3)Double-Sided (DIMM3 must be empty)x1
3. HARDWARE SETUP
DIMM3Single-Sided (DIMM2 must be single-sided)
(Rows 3&2)(Double-Sided DIMM cannot be used here!)x1
(must be same or half DIMM2 memory size)
Total System Memory (Max 512MB)=
3.5.1General DIMM Notes
• ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the
memory of choice for best performance vs. stability.
• SDRAM chips are generally thinner with higher pin density than EDO (Extended
Data Output) chips.
• BIOS shows SDRAM memory on bootup screen.
• Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64,
128, 256MB.
24ASUS P3W User’s Manual
3. HARDWARE SETUP
3.5.2DIMM Installation
Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation shown. DIMMs are
longer and have different pin contact on each side and therefore have a higher pin
density. SIMMs have the same pin contact on both sides.
10101
88 Pins
P3W
®
60 Pins
20 Pins
Lock
FRONT
P3W 168-Pin DIMM Sockets
The DIMMs must be 3.3V Unbuffered for this motherboard. T o determine the DIMM
type, check the notches on the DIMMs (see figure below).
168-Pin DIMM Notch Key Definitions (3.3V)
3. H/W SETUP
System Memory
DRAM Key Position
RFU
Buffered
Unbuffered
Voltage Key Position
5.0V
Reserved
3.3V
The notches on the DIMM module will shift between left, center , or right to identify
the type and also to prevent the wrong type from being inserted into the DIMM slot
on the motherboard. You must ask your retailer the correct DIMM type before purchasing. This motherboard supports four clock signals per DIMM slot.
ASUS P3W User’s Manual25
3. HARDWARE SETUP
3.6Central Processing Unit (CPU)
NOTE: The following pictures are provided for reference purposes only. The appearance of your retention mechanism and fan may be different from the following
examples.
3. H/W SETUP
CPU
Your motherboard provides a Slot 1 connector for a Pentium
®
III processor packaged in a Single Edge Contact Cartridge (SECC2), a Pentium® II processor packaged in SECC2/SECC, or a Celeron™ processor packaged in a Single Edge Processor Package (SEPP). An ASUS S370 CPU card can allow Socket 370 processors to
be used on any ASUS motherboard with the Slot 1 connector (See 7.2 S370 SeriesCPU Card for instructions on using this card).
Pentium II processor packaged in an SECC with
heatsink and fan (top view)
Pentium III (in an SECC2) with heatsink and fan
NOTE: The SEPP fan (for Celeron processors) is
similar to SECC2 fan except that the clamping
design is different.
3.6.1Universal Retention Mechanism
Y our motherboard comes preinstalled with a Universal Retention Mechanism (URM).
The URM supports Pentium III / II and Celeron processors.
Universal Retention Mechanism (URM)
26ASUS P3W User’s Manual
3. HARDWARE SETUP
3.6.2Heatsinks
The recommended heatsinks (see section on recommended heatsinks for Pentium
III / II processors for more information) for the boxed Pentium III / II and Celeron
processors are those with three-pin fans that can be connected to the fan connectors
on the motherboard.
WARNING!Be sure that there is sufficient air circulation across the processor’s
heatsink by regularly checking that your CPU fan is working. W ithout sufficient
circulation, the processor could overheat and damage both the processor and the
motherboard. You may install an auxiliary chassis fan, if necessary.
3.6.3Installing the Processor
1.Unlock the URM’s Folding Support
Arms: The folding support arms of
the URM are locked when shipped.
T o unlock the support arms, simply flip
them up to an upright position.
CPU
3. H/W SETUP
Locked Folding Support
Unlocked Folding Support
The URM is now ready for the installation of your processor.
ASUS P3W User’s Manual27
3. HARDWARE SETUP
2.Attach the Heatsink
NOTE: If provided, you should follow the heatsink attachment instructions
that came with your heatsink or processor. The following steps are provided
only as a general guide and may not reflect those for your heatsink.
3. H/W SETUP
CPU
Using SECC fan with Pentium
Push the two lock arms one direction to
clamp the heatsink onto the processor
and the other direction to release.
Lock Arm
Lock Arm
®
II
Using SECC2 fan with Pentium® III
Insert the four heatsink’s pins through
the holes of the SECC2. Place the metal
clip on the ends of the pins and slide
until it locks into place.
Four Pins and metal clip
W ARNING! Make sure the heatsink is mounted tightly against the SECC2, SECC,
or SEPP; otherwise, the CPU will overheat. You may install an auxiliary fan to
provide adequate circulation across the processor’s passive heatsink.
NOTE: The SEPP heatsink and fan (for Intel Celeron processors) is similar to
the SECC2 heatsink and fan except that the clamping design is different.
3.Insert the SECC2/SECC/SEPP
SECC with Pentium
®
II only: Push the SECC’s two locks inward until you hear
a click (the picture in step 2 shows the locks in the outward position and inward in
the picture below).
With the heatsink facing the motherboard’s chipset, push the SECC2, SECC, or
SEPP gently but firmly into the Slot 1 connector until it is fully inserted.
SECC
Push lock inward
CPU fan cable to
fan connector
SECC2/SEPP
CPU fan cable to
fan connector
28ASUS P3W User’s Manual
3. HARDWARE SETUP
4.Secure the SECC2/SECC/SEPP
Secure the SECC2/SECC/SEPP in place by pushing the SECC2/SECC/SEPP
until it is firmly seated on the Slot 1 connector.
SECC with Pentium
®
II only: The SECC locks should be outward when se-
cured so that the lock shows through the retention mechanism’s lock holes.
SECCSECC2/SEPP
Lock hole
Lock hole
CPU fan cable to
fan connector
CPU fan
cable to fan
connector
3.6.4Recommended Heatsinks for Slot 1 Processors
The recommended heatsinks for the Slot 1 processors are those with three-pin fans,
such as the ASUS Smart Fan, that can be connected to the motherboard’s CPU fan
connector . These heatsinks dissipate heat more efficiently and with an optional hardware monitor, they can monitor the fan’s RPM and use the alert function with the
Intel LANDesk Client Manager (LDCM) or the ASUS PC Probe software.
CPU
3. H/W SETUP
SECC Heatsink & FanSECC2 Heatsink & Fan
NOTE: The SEPP heatsink and fan (for Intel Celeron processors) is similar to the
SECC2 heatsink and fan except that the clamping design is different.
ASUS P3W User’s Manual29
3.6.5Precautions
Operating a processor at temperatures above its maximum specified operating temperature will shorten the processor lifetime and may cause unreliable operation. To
prevent system overheat and/or damage, it is important to have accurate temperature readings of the processor core (the main source of power dissipation) for system thermal management. Included inside Pentium III, Pentium II (Deschutes), and
PPGA370 Celeron processors is a thermal sensor that is connected to the internal
thermal diode.
Unlike other motherboards, this motherboard was designed to acquire thermal data
directly from the processor thermal diode. Therefore, the CPU temperature reported
may be higher than those from motherboards that take readings from thermal sensors external to the processor. This is not a cause for alarm. If, however, the BIOS
and/or your hardware monitoring program is reporting a CPU temperature above
the threshold, check the following:
3. H/W SETUP
3. HARDWARE SETUP
CPU
1.An Intel recommended fan heatsink is used.
2.Good quality thermal interface material is used.
3.The heatsink is correctly installed onto the processor with a strong retention clip.
4.There is no visible gap between the processor die and heatsink.
The thermal interface material
should be continuous with no
through-holes or debris.
Example of a correctly installed retention clip
Example of an incorrectly installed retention clip
30ASUS P3W User’s Manual
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