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, 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.
The product name and revision number are both printed on the product itself. Manual revisions
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 or through any of the means indicated on the following page.
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.
ii
About this guide
This user manual contains complete information for installing the ASUS
P4S533-E motherboard.
How this guide is organized
•Chapter 1: Product introduction. A summary of product features and
special attributes of new technologies.
•Chapter 2: Hardware information. A list of hardware setup procedures
and descriptions of all jumpers and connectors on the motherboard.
•Chapter 3: Powering up. Describes the power up sequence with
information on BIOS beep codes.
•Chapter 4: BIOS setup. How to change system settings using onboard
BIOS firmware. Detailed descriptions of the BIOS parameters are supplied.
•Chapter 5: Software support. A summary of contents on the
motherboard support CD ROM.
•Appendix and Glossary . Optional components and technical definitions.
•Index
Conventions used in this guide
Features
T o make sure that you perform set-up tasks properly , take note of the following
symbols used throughout this manual.
WARNING!Information to prevent injury to yourself.
CAUTION! Information to prevent damage to the components.
IMPORTANT!Information that you MUST follow to complete a task.
NOTE!T ips and helpful information.
iii
Contents
Safeguards
About this guide .............................................................................. iii
How this guide is organized.................................................... iii
Conventions used in this guide............................................... iii
Safety information ...........................................................................vi
FCC/CDC statements .................................................................... vii
ASUS contact information ............................................................. viii
Index ...................................................................................... 107
v
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. 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 adpater or extension cord.
These devices could interrupt the grounding circuit.
•Make sure that your power supply is set to the voltage available in your
area.
•If the power supply is broken, contact a qualified service technician or your
retailer.
Operational safety
•Before installing the motherboard and adding new devices, carefully read
all the manuals that came with the package.
•Before use ensure all cables are correctly connected and the power cables
are not damaged. If you detect any damage, contact the 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.
•Mount the motherboard inside a standard PC enclosure.
•If you encounter technical problems with the product, contact a qualified
service technician or the dealer.
vi
FCC/CDC statements
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:
•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 modifications 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.
vii
ASUS contact information
ASUSTeK COMPUTER INC. (Asia-Pacific)
Address:150 Li-Te Road, Peitou, Taipei, Taiwan 112
General Tel:+886-2-2894-3447
General Fax:+886-2-2894-3449
General Email:info@asus.com.tw
Technical Support:
MB/Others (Tel):+886-2-2890-7121 (English)
Notebook (Tel):+886-2-2890-7122 (English)
Desktop/Server (Tel):+886-2-2890-7123 (English)
Support Fax:+886-2-2890-7698
Support Email:tsd@asus.com.tw
Web Site:www.asus.com.tw
Newsgroup:cscnews.asus.com.tw
ASUS COMPUTER INTERNATIONAL (America)
Address:6737 Mowry Avenue, Mowry Business Center,
Building 2, Newark, CA 94560, USA
General Fax:+1-510-608-4555
General Email:tmd1@asus.com
Technical Support:
Support Fax:+1-510-608-4555
General Support:+1-502-995-0883
Notebook Support:+1-877-918-ASUS (2787)
Web Site:www.asus.com
Support Email:tsd@asus.com
ASUS COMPUTER GmbH (Europe)
Address:Harkortstr. 25, 40880 Ratingen, BRD, Germany
General Fax:+49-2102-442066
General Email:sales@asuscom.de (for marketing requests only)
Technical Support:
Support Hotline:MB/Others: +49-2102-9599-0
Notebook (Tel):+49-2102-9599-10
Support Fax:+49-2102-9599-11
Support (Email):www.asuscom.de/de/support (for online support)
Web Site:www.asuscom.de
viii
Chapter 1
Product introduction
ASUS P4S533-E motherboard
Welcome!
Thank you for buying the ASUS® P4S533-E motherboard!
The ASUS
ensure long-lasting, superlative performance. The ASUS
P4S533-E motherboard delivers a host of new features to
®
P4S533-E
motherboard is the prime choice for home PCs and workstations.
®
The P4S533-E incorporates the Intel
Pentium® 4 Processor coupled with
the SiS 645DX chipset to set a new benchmark for an effective desktop
platform solution.
~ CPU Thermal Protection
~ Up to 3GB of system memory of DDR200/266/333 DRAM
~ High-resolution graphics via an AGP 4X slot
~ Digital Audio Interface for 3D sound
™
~ Realtek
~ ASUS Post Reporter
LAN Controller onboard
™
onboard
~ Two USB ports plus two headers for four more
Before installing the motherboard, check the items in your package:
1.1Package contents
Check your P4S533-E package for the following items.
ASUS P4S533-E motherboard (ATX form factor: 12-in x 8.6-in)
ASUS P4S533-E support CD
ASUS 4-port USB 2.0 cable
80-conductor ribbon cable for UltraDMA/33/66/100/133 IDE drives
40-conductor IDE cable
Ribbon cable for a 3.5-inch floppy drive
Bag of extra jumper caps
1394 connector cable
1394 PCI card
User Guide
If any of the above items is damaged or missing, contact your retailer.
ASUS P4S533-E motherboard user guide
1
1.2
The P4S533-E motherboard is designed and assembled according to the
highest standards. This ASUS motherboard represents the latest advances
to supply users the finest componentry available today...
Northwood Processor. The Pentium 4 processor utilizes the advanced
0.18 micron processor core in FC-PGA2 package for a 2.0GHz frequency ,
while the Northwood processor uses the 0.13 micron processor core with
512KB L2 cache for up to a speedy 2.2+ GHz frequency and a 533 MHz
FSB. The P4 optimizes audio, video, and Internet applications.
North Bridge Chipset: the SiS
133/100MHz Front Side Bus, and the fastest 333 MHz memory bus.
South Bridge Chipset: the SiS
supports UltraDMA133/100/66/33 for burst mode data transfer rates up
to 133MB/sec, and USB controller with two root hubs for six USB ports.
PC 2700 / 2100 / 1600 DDR Support: Equipped with three Double Data
Rate Dual Inline Memory Module (DDR DIMM) sockets to support up to
3GB of DDR DRAM, the newest memory standard with the highest
bandwidth and lowest latency currently available. This new memory
technology increases performance by executing two actions per clock
cycle, resulting in data transfer rates of up to 2.7 GB/s for 166MHz DDR
SDRAM and 2.1GB/s for 133MHz DDR SDRAM. (Only 4 banks of
DDR333 memory, or 2GB, are supported on the P4S533-E.)
Core Specifications
®
645DX supports AGP 4X/2X mode,
®
962 / 962/L integrated peripheral controller
UltraDMA133 Support: Comes with an onboard PCI Bus Master IDE
controller with two connectors that support four IDE devices on two
channels. Supports UltraDMA133/100/66/33, PIO Modes 3 & 4, Bus
Master IDE DMA Mode 2, and Enhanced IDE devices, such as DVDROM, CD-ROM, CD-R/RW, LS-120, and Tape Backup drives.
Multi-I/O Chipset: The ITE 8707F chip offers complete support for a variety
of I/O functions. Provides two high-speed UART compatible serial ports
and one parallel port with EPP and ECP capabilities. UAR T2 can switch
from COM2 to the Infrared Module for wireless connections. The Super I/
O controller supports a floppy disk drive, PS/2 keyboard, and PS/2 mouse.
Smart BIOS: 2Mb firmware enables Vcore and CPU/DDR SDRAM frequency
adjustments, boot block write protection, and HD/SCSI/MO/ZIP/CD/Floppy
boot selection.
Expansion: One AGP 4X, four USB ports, two COM ports, six PCI slots,
SPDIF digital audio, iPanel, front audio panel, SMB, three IEEE-1394
headers, smart card, CIR infrared.
Microphone, Line-In / Line-Out jacks, Standard A TX, AUX and 12V power .
2
Chapter 1: Product introduction
1.3Special Features
Easy Overclocking
™
•Quickly adjust CPU frequency multiples with BIOS in JumperFree
•Adjustable FSB/MEM/PCI frequency ratio
•Stepless Frequency Selection (SFS) for fine-tuning system bus frequency
from at 1MHz increments
•Optimal system performance available with BIOS built-in Turbo Mode
Mode
ASUS EZ Plug
™
(See page 38.)
This patented ASUS technology uses the existing power supply
instead of having to buy a new ATX 12V power supply: ASUS EZ
Plug™ is a 4-pin +12V connector that provides additional power
required by P4 CPUs.
ASUS EZ Flash BIOS
(See page 51.)
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 floppy disk.
ASUS POST Reporter™
(See page 27, 44, 79 and 88.)
P4S533-E offers the ASUS POST Reporter™ to provide friendly voice
messages and alerts during the Power-On Self-Test (POST). Through
the system’s internal speaker, or an added external speaker, messages
inform you of system boot status and causes of boot errors. Bundled
™
Winbond
Voice Editor software helpsa you customize voice
messages, and offers multi-language support.
ASUS MYLogo2™
(See page 98.)
This new feature present in the P4S533-E motherboard allows you to
personalize and add style to your system with customizable boot logos.
ASUS Q-Fan feature
(See page 77.)
The ASUS Q-Fan technology smartly adjusts the fan speeds according
to the system loading to ensure quiet, cool, and efficient operation.
ASUS Multi-language BIOS
(See page 56.)
The multi-language BIOS offers the language of your choice from
several options. Localized BIOS menus are easy to configure. Visit the
ASUS website for the supported languages.
ASUS P4S533-E motherboard user guide
3
1.4
Motherboard Components
Before installing the P4S533-E motherboard, take time to familiarize yourself
with its configuration: understanding the motherboard makes upgrading easy .
Sufficient knowledge of specifications prevents accidental damage.
ATX Power Supply Connector ......................................... 3
AUX12V1 EZ-Plug Power Supply Connector.................. 5
P4™ Processors .............................2
4
Chapter 1: Product introduction
1.4.1Component Locations
30
29
28
27
1
234
5
6
7
8
9
26
25
24
23
22
31323334
2117
20
19
16
10
11
12
13
14
1518
ASUS P4S533-E motherboard user guide
353637403938
5
1.5Value-added solutions
PCI Audio: On audio models, a digital audiochip., CMI-8738, and a special
connector supports the Sony/Philips Digital Interface (S/PDIF) Output/
Input module for coaxial and fiber interfaces. Experience surround sound
and enhanced 3D audio.
Smart Card Reader Support: A special connector for the Smart Card Reader
comes onboard to support the cutting-edge technology for increased
security in authenticating online transactions, editing IC-based information.
USB2.0: The latest connection standard for next generation components
and peripherals. Compatible with 1.1 USB, the new 2.0 USB protocol
delivers transfer speeds up to 40 times faster at 480Mb/s. NOTE: USB
2.0 is not supported under Win98/WinME.
T emperature, Fan and V oltage Monitoring: CPU temperature is monitored
by the ASUS ASIC through the CPU’s internal thermal diode to prevent
overheating and damage. All system fans are monitored for RPM and
failure. System voltage levels are monitored to ensure stable voltage to
critical motherboard components.
Auto Fan Off: The system fans powers off automatically even in sleep mode.
ACPI Ready: Advanced Configuration Power Interface (ACPI) provides more
Energy Saving Features for operating systems that support OS Direct
Power Management (OSPM).
Onboard LAN (Optional): The motherboard incorporates the RTL8201 PHY
chip to support 10BASE-T/100BASE-TX Fast Ethernet networking.
Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI
master busses to the memory and processor.
Dual Function Power Button: Push the power button for less than 4 seconds
when the system is operating places the system into sleep or soft-off
modes, depending on the BIOS or OS setting. If the power button is
pressed for more than 4 seconds, the system enters soft-off mode.
Chassis intrusion detection: The motherboard supports chassis
intrusion monitoring through the ASUS ASIC. A chassis intrusion event
is retained in the system memory for more protection.
Chapter 2
Hardware information
ASUS P4S533-E motherboard
2.1Motherboard installation
Before you install the motherboard, study the configuration of your chassis
to ensure that the motherboard fits into it. The P4S533-E uses the ATX
form factor that measures 21.9 cm (8.6 in.) x 30.5 cm (12.0 in.), a standard
fit for most chassis.
Make sure to unplug the power cord before installing or removing the
motherboard. Failure to do so may cause you physical injury and
damage motherboard components.
2.1.1Placement direction
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. Refer to the image below.
2.1.2Screw holes
Place six (6) screws into the holes indicated by circles to secure the
motherboard to the chassis.
Do not overtighten the screws! Doing so may damage the
motherboard.
Place this side towards
the rear of the chassis
ASUS P4S533-E motherboard user guide
7
2.2Motherboard layout
21.9cm (8.6in)
PS/2KBMS
T: Mouse
B: Keyboard
Bottom:
Top:
USB1
RJ-45
USB2
COM1
PARALLEL PORT
COM2
Line
Out
Line
In
Mic
GAME_AUDIO
In
CD1
ALIN1
ALOUT1
IAPANEL1
USBV1
KBPWR
ATX12V1
CPUFAN1
AUX1
LAN PHY
VEN1
ATX Power Connector
SiS645DX
HOST/
Memory
Controller
Accelerated Graphics Port
AGP
PCI1
PCI2
P4S533-E
Socket 478
PWRFAN1
DDR DIMM1 (64/72 bit, 184-pin module)
0 1
DDR DIMM3 (64/72 bit, 184-pin module)
DDR DIMM2 (64/72 bit, 184-pin module)
4 5
2 3
SiS962
AUX12V1
DDRVOL1
SECONDARY IDE
CR2032 3V
Lithium Cell
CMOS Power
FLOPPY1
PRIMARY IDE
CLRCMOS1
MuTLOL
Media
I/O
PWRTMP1
DSW1
30.5cm (12.0in)
JEN1
MODEM1
C-Media
CMI8738 6CH
Audio Controller
SPDIF1
BCS1
BCS2
AEN1
4Mbit
Firmware
Hub
LED1
PCI3
PCI4
PCI5
PCI6
USBV2
USBV3
USB3
RTL8801
®
IEEE_1394_1
IEEE_1394_2
IEEE_1394_3
Super
I/O
USB2
SMB1
SMARTCON1
CHASFAN1
ASUS
ASIC
Hardware
Monitor
AFPANEL1
IDELED1
PANEL1
with
The 1394 and LAN features are optional. These components are
grayed out in the above motherboard layout.
IR
CHASSFAN1
SPEECH1
SPEECH
8
Chapter 2: Hardware information
2.2.1Layout contents
CPU, Memory and Expansion Slots
1)Socket 478p. 12 Installing the CPU
2)Heatsinkp. 14 Installing the Heatsink and Fan
3)Memoryp. 17 System Memory Support
4)PCI 1/2/3/4/5/6p. 21 32-bit PCI Bus Expansion Slots
27) SPEAKERp. 44 System Warning Speaker Lead (4 pin)
28) MLEDp. 44 System Message LED Lead (2 pin)
29) SMIp. 44 System Management Interrupt Lead (2 pin)
30) PWRSWp. 44 ATX Power Switch / Soft-Off Switch Lead (2 pin)
31) RESETp. 44 Reset Switch Lead (2-pin)
2.3Before you proceed
Take note of the following precautions before you install motherboard
components or change any motherboard settings.
23.
1. Unplug the power cord from the wall socket before touching any
component.
2. 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.
3. Hold components by the edges and do not to touch the ICs on them.
4. Whenever you uninstall any component, place it on a grounded
antistatic pad or in the bag that came with the component.
5. 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.
10
Chapter 2: Hardware information
2.4Central Processing Unit (CPU)
2.4.1Overview
The motherboard comes with a surface mount 478-pin Zero Insertion
Force (ZIF) socket. This socket is specifically designed for the Intel
Pentium® 4 478/Northwood Processor.
The Intel Pentium 4 Processor in the 478-pin package uses the Flip-Chip
Pin Grid Array 2 (FC-PGA2) package technology, and includes the Intel
NetBurst™ micro-architecture. The Intel NetBurst micro-architecture
features the hyper-pipelined technology, rapid execution engine, 400MHz
system bus, and execution trace cache. Together, these attributes improve
system performance by allowing higher processor frequencies, faster
execution of integer instructions, and a data transfer rate of 3.2GB/s.
Gold Mark
®
®
Note in the illustration that the CPU has a gold triangular mark on one
corner. This mark indicates the processor Pin 1 that should match a
specific corner of the CPU socket.
Incorrect installation of the CPU into the socket may bend the pins and
severely damage the CPU!
ASUS P4S533-E motherboard user guide
11
2.4.2Installing the CPU
Follow these steps to install a CPU.
1.Locate the 478-pin ZIF socket on the motherboard.
2.Unlock the socket by pressing the lever sideways, then lift it up to a
90°-100° angle.
Socket Lever
90 -100
12
Make sure that the socket lever is lifted up to 90°-100° angle,
otherwise the CPU does not fit in completely.
Chapter 2: Hardware information
3.Position the CPU above the socket such that its marked corner
matches the base of the socket lever.
4.Carefully insert the CPU into the socket until it fits in place.
The CPU fits only in one correct orientation. DO NOT force the CPU
into the socket to prevent bending the pins and damaging the CPU!
Gold Mark
5.When the CPU is in place, press it firmly on the socket while you push
down the socket lever to secure the CPU. The lever clicks on the side
tab to indicate that it is locked.
ASUS P4S533-E motherboard user guide
13
2.4.3Installing the heatsink and fan
The Intel® Pentium® 4 478/Northwood Processor requires a specially
designed heatsink and fan assembly to ensure optimum thermal condition
and performance.
When you buy a boxed Intel Pentium 4 478/Northwood Processor, the
package includes the heatsink, fan, and retention mechanism.
In case you buy a CPU separately, make sure that you use only Intel
certified heatsink and fan.
Follow these steps to install the CPU heatsink and fan.
1.Place the heatsink on top of the installed CPU, making sure that the
heatsink fits 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.
CPU Heatsink
Retention Module Base
Your boxed Intel Pentium 4 478/Northwood Processor package should
come with installation instructions for the CPU, heatsink, and the
retention mechanism. If the instructions in this section do not match the
CPU documentation, follow the latter.
14
Chapter 2: Hardware information
2.Position the fan with the retention mechanism on top of the heatsink.
Align and snap the four hooks of the retention mechanism to the holes
on each corner of the module base.
Make sure that the fan and retention mechanism assembly perfectly
fits the heatsink and module base, otherwise you cannot snap the
hooks into the holes.
Retention Hole
Retention Lock
Keep the retention locks lifted upward while fitting the retention
mechanism to the module base.
ASUS P4S533-E motherboard user guide
Retention Hook Snapped
to the Retention Hole
15
3.Push down the locks on the retention mechanism to secure the
heatsink and fan to the module base.
When secure, the retention locks should point to opposite directions.
2.4.4Connecting the CPU fan cable
When the fan, heatsink, and the retention mechanism are in place,
connect the CPU fan cable to the connector on the motherboard labeled
CPUFAN1.
CPU Fan Connector (CPUFAN1)
Don’t forget to connect the CPU fan connector! Hardware monitoring
errors may occur if you fail to plug this connector.
16
Chapter 2: Hardware information
2.5System memory
2.5.1Overview
The motherboard comes with three Double Data Rate (DDR) Dual Inline
Memory Module (DIMM) sockets. These sockets support up to 3GB
system memory using 184-pin unbuffered non-ECC PC2700/2100/1600
DIMMs. (Only 4 banks of PC2700 are supported.)
104 Pins
P4S533-E
®
P4S533-E 184-Pin DDR DIMM Sockets
A DDR DIMM is keyed with a notch so that it fits in only one direction.
DO NOT force a DIMM into a socket to avoid damaging the DIMM.
80 Pins
The DDR SDRAM technology evolved from the mainstream PC66, PC100,
PC133 memory known as Single Data Rate (SDR) SDRAM. DDR memory
however, has the ability to perform two data operations in one clock cycle,
thus providing twice the throughput of SDR memory.
DDR Data Transfer RateDDR Base Frequency
2.7 GB/s166MHz
2.1 GB/s133MHz
1.6 GB/s100MHz
A DDR DIMM has the same physical dimensions as an SDR DIMM, but it
has a 184-pin footprint compared to the 168-pin of the SDR DIMM. Also, a
DDR DIMM is single notched while an SDR DIMM is double notched.
Therefore, a DDR DIMM is not backward compatible with SDR, and should
be installed only in a socket specially designed for DDR DIMMs.
ASUS P4S533-E motherboard user guide
17
2.5.2Memory configurations
You may install any DDR DIMMs with 64MB, 128MB, 256MB, 512MB, and
1GB densities into the three DIMM sockets.
Use the following three combinations to install DDR DIMMs.
Use only the tested and qualified DDR333 DIMMs listed above. Other
DDR DIMMs manufactured by other vendors may not be suitable for
this motherboard. Visit the ASUS website for the latest qualified DDR
module list.
18
Chapter 2: Hardware information
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