GA-8S661GXMP
GA-8S661GXMP(-C)
Intel® Pentium
User's Manual
Rev. 1003
12ME-S661GXMP-1003
®
4 Socket 478 Processor Motherboard
April 11, 2005
GA-8S661GXMP
Motherboard
April 11, 2005
GA-8S661GXMP
Motherboard
Copyright
© 2006 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in the manual are legally registered to their respective companies.
Notice
The written content provided with this product is the property of Gigabyte.
No part of this manual may be reproduced, copied, translated, or transmitted in any form or by any
means without Gigabyte's prior written permission. Specifications and features are subject to
change without prior notice.
Product Manual Classification
In order to assist in the use of this product, Gigabyte has categorized the user manual in the
following:
For detailed product information and specifications, please carefully read the
"User’s Manual."
For detailed information related to Gigabyte's unique features, please go to the "Technology
Guide" section on Gigabyte’s website to read or download the information you need.
Fore more product details, please visit Gigabyte's website at www.gigabyte.com.tw
Table of Contents
GA-8S661GXMP(-C) Motherboard Layout .................................................................... 6
Block Diagram ................................................................................................................ 7
Chapter 1 Hardware Installation ..................................................................................... 9
1-1 Considerations Prior to Installation .................................................................... 9
1-2 Feature Summary .......................................................................................... 10
1-3 Installation of the CPU and Heatsink ............................................................... 11
1-3-1 Installation of the CPU .......................................................................................... 11
1-3-2 Installation of the Heatsink .................................................................................. 12
1-4 Installation of Memory .................................................................................... 13
1-5 Installation of Expansion Cards ...................................................................... 14
1-6 I/O Back Panel Introduction ........................................................................... 15
1-7 Connectors Introduction .................................................................................. 16
Chapter 2 BIOS Setup................................................................................................. 27
The Main Menu (For example: BIOS Ver. : E2) ....................................................... 28
2-1 Standard CMOS Features ............................................................................. 30
2-2 Advanced BIOS Features .............................................................................. 32
2-3 Integrated Peripherals ..................................................................................... 34
2-4 Power Management Setup ............................................................................. 36
2-5 PnP/PCI Configurations ................................................................................. 38
2-6 PC Health Status ........................................................................................... 39
2-7 MB Intelligent Tweaker (M.I.T.) ...................................................................... 40
2-8 Load Fail-Safe Defaults ................................................................................... 42
2-9 Load Optimized Defaults ................................................................................. 42
2-10 Set Supervisor/User Password ..................................................................... 43
2-11 Save & Exit Setup ......................................................................................... 44
2-12 Exit Without Saving ....................................................................................... 44
- 4 -
Chapter 3 Drivers Installation ...................................................................................... 45
3-1 Install Chipset Drivers .................................................................................... 45
3-2 Software Application ....................................................................................... 46
3-3 Software Information ....................................................................................... 46
3-4 Hardware Information ..................................................................................... 47
3-5 Contact Us ..................................................................................................... 47
Chapter 4 Appendix ..................................................................................................... 49
4-1 Unique Software Utility .................................................................................. 49
4-1-1 Xpress Recovery2 Introduction ......................................................................... 49
4-1-2 BIOS Flash Method Introduction ........................................................................ 51
4-1-3 2 / 4 / 6 Channel Audio Function Introduction ................................................. 60
4-2 Troubleshooting ............................................................................................... 68
- 5 -
GA-8S661GXMP(-C) Motherboard Layout
KB_MS
COMA
LPT
CPU_FAN
COMB
-C
ATX
#
FDD
VGA
USB
USB
AUDIO
CODEC
LAN*
IT8705AF
CD_IN
F_AUDIO
BIOS
ATX_12V
ICS1883*
AGP
SPDIF_IO
SUR_CEN
Socket 478
SiS 661GX
PCI1
PCI2
PCI3
BAT
F_USB1
GA-8S661GXMP
DDR2
DDR1
SiS 964L
F_USB2
PWR_LED
CI
IDE2 IDE1
CLR_CMOS
SYS _FAN
F_PANEL
"*" Only for GA-8S661GXMP
"#" Only for GA-8S661GXMP-C
- 6 -
Block Diagram
AGPCLK
(66MHz)
3 PCI
PCICLK
(33MHz)
AGP 4X/8X
ICS1883*
RJ45*
VGA Port
AC97 Link
AC97
CODEC
MIC
LINE-IN
Pentium 4
Socket 478
SiS 661GX
SiS 964L
8 USB
Ports
LINE-OUT
CPU
Interface
ATA33/66/100/
133 IDE
Channels
CPUCLK+/- (100/133MHz)
Host
HCLK+/- (100/133/200MHz)
133MHz
33 MHz
14.318 MHz
48 MHz
LPC BUS
IT8705AF
33 MHz
KB/Mouse
266/333/400MHz
24 MHz
PS/2
DDR RAM
BIOS
Floppy
LPT Port
COM
Ports
"*" Only for GA-8S661GXMP
- 7 -
- 8 -
Chapter 1 Hardware Installation
1-1 Considerations Prior to Installation
Preparing Your Computer
The motherboard contains numerous delicate electronic circuits and components which can
become damaged as a result of electrostatic discharge (ESD). Thus, prior to installation, please
follow the instructions below:
1. Please turn off the computer and unplug its power cord.
2. When handling the motherboard, avoid touching any metal leads or connectors.
3. It is best to wear an electrostatic discharge (ESD) cuff when handling electronic components
(CPU, RAM).
4. Prior to installing the electronic components, please have these items on top of an antistatic pad or
within a electrostatic shielding container.
5. Please verify that the power supply is switched off before unplugging the power supply connector
from the motherboard.
Installation Notices
1. Prior to installation, please do not remove the stickers on the motherboard. These stickers are required
for warranty validation.
2. Prior to the installation of the motherboard or any hardware, please first carefully read the information
in the provided manual.
3. Before using the product, please verify that all cables and power connectors are connected.
4. To prevent damage to the motherboard, please do not allow screws to come in contact with the
motherboard circuit or its components.
5. Please make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
6. Please do not place the computer system on an uneven surface.
7. Turning on the computer power during the installation process can lead to damage to system
components as well as physical harm to the user.
8. If you are uncertain about any installation steps or have a problem related to the use of the product,
please consult a certified computer technician.
English
Instances of Non-Warranty
1. Damage due to natural disaster, accident or human cause.
2. Damage as a result of violating the conditions recommended in the user manual.
3. Damage due to improper installation.
4. Damage due to use of uncertified components.
5. Damage due to use exceeding the permitted parameters.
6. Product determined to be an unofficial Gigabyte product.
Hardware Installation- 9 -
English
1-2 Feature Summary
CPU Socket 478 for Intel® Pentium® 4 (Northwood, Prescott) processor with
HT Technology
Supports 533/400MHz FSB
L2 cache varies with processors
Chipset Northbridge:SiS® 661GX
Southbridge: SiS® 964L
Memory 2 184-pin DDR DIMM slots
Supports DDR400/333/266 DIMM
Supports up to 2GB (Max.)
Slots 1 AGP slot 4X/8X (1.5V) device support
3 PCI slots
IDE Connections 2 IDE connection (UDMA 33/ATA 66/ATA 100/ATA133), allows connection of
4 IDE devices
FDD Connections 1 FDD connection, allows connection of 2 FDD devices
Peripherals 1 parallel port supporting Normal/EPP/ECP mode
1 VGA port, 1 COMA port, onboard COMB connection
8 USB 2.0/1.1 ports (rear x 4, front x 4 via cable)
1 front audio connector
1 PS/2 keyboard port
1 PS/2 mouse port
Onboard VGA Built-in SiS® 661GX Chipset
Onboard LAN* ICS 1883 chip
1 RJ45 port
Onboard Audio Realtek ALC655 CODEC
Supports Line In ; Line Out ; MIC In
Supports 2 / 4 / 6 channel audio
SPDIF In/Out connection
CD In connection
Supports Jack-Sensing function
I/O Control IT8705AF
Hardware Monitor CPU / System fan speed detection
System voltage detection
CPU temperature detection
BIOS Use of licensed AWARD BIOS
Supports Q-Flash
Additional Features Supports @BIOS
Supports EasyTune
Form Factor Micro-ATX form factor; 24.4cm x 23.0cm
"*" Only for GA-8S661GXMP
GA-8S661GXMP(-C) Motherboard - 10 -
1-3 Installation of the CPU and Heatsink
Before installing the CPU, please comply with the following conditions:
1. Please make sure that the motherboard supports the CPU.
2. Please take note of the pin one marks on the processor and socket. If you install the
CPU in the wrong direction, the CPU will not insert properly. If this occurs, please
change the insert direction of the CPU.
3. Please add an even layer of heat sink paste between the CPU and heatsink.
4. Please make sure the heatsink is installed on the CPU prior to system use, otherwise
overheating and permanent damage of the CPU may occur.
5. Please set the CPU host frequency in accordance with the processor specifications. It is not
recommended that the system bus frequency be set beyond hardware specifications since it
does not meet the required standards for the peripherals. If you wish to set the frequency
beyond the proper specifications, please do so according to your hardware specifications
including the CPU, graphics card, memory, hard drive, etc.
HT functionality requirement content :
Enabling the functionality of Hyper-Threading Technology for your computer system requires all
of the following platform components:
- CPU: An Intel® Pentium 4 Processor with HT Technology
- Chipset: An SiS® Chipset that supports HT Technology
- BIOS: A BIOS that supports HT Technology and has it enabled
- OS: An operation system that has optimizations for HT Technology
1-3-1 Installation of the CPU
English
Raise the processor
socket handle to 65
degrees.
1. Raise the processor socket handle to
65 degrees. You maybe feel a kind of
tight.
Fully raise the pro-
cessor socket handle.
2. Raise the processor socket
handle all the way up to a fully
raised position (around 90
degrees) till you hear a "click."
Hardware Installation- 11 -
English
Pin OnePin One
Pin One
Pin OnePin One
IndicatorIndicator
Indicator
IndicatorIndicator
3. Locate the Pin One Indicator on the
processor.
4. Locate Pin One in the socket and
look for a (golden) cut edge on the
CPU upper corner. Then insert the
CPU into the socket and close the
socket handle.
1-3-2 Installation of the Heatsink
1. Push down the cooler clip to secure to the
retention mechanism hooks for all four corners.
00
0 Please use Intel® approved cooling fan.
00
00
0 We recommend you to apply the thermal tape to provide better heat conduc
00
tion between your CPU and heatsink. (The CPU cooling fan might stick to the
CPU due to the hardening of the thermal paste. During this condition if you
try to remove the cooling fan, you might pull the processor out of the
CPU socket alone with the cooling fan, and might damage the processor. To
avoid this from happening, we suggest you to either use thermal tape in
stead of thermal paste, or remove the cooling fan with extreme caution.)
00
0 Make sure the CPU fan power cable is plugged in to the CPU fan connector,
00
this completes the installation.
00
0 Please refer to CPU heat sink user’s manual for more detail installation
00
procedure.
GA-8S661GXMP(-C) Motherboard - 12 -
2. Plug the cooler power cable into the CPU fan
connector on the motherboard.
1-4 Installation of Memory
Before installing the memory modules, please comply with the following conditions:
1. Please make sure that the memory used is supported by the motherboard. It is recommended that
memory of similar capacity, specifications and brand be used.
2. Before installing or removing memory modules, please make sure that the computer
power is switched off to prevent hardware damage.
3. Memory modules have a foolproof insertion design. A memory module can be
installed in only one direction. If you are unable to insert the module, please switch the
direction.
The motherboard has 2 dual inline memory module (DIMM) sockets. The BIOS will automatically
detects memory type and size. To install the memory module, just push it vertically into the DIMM
socket. The DIMM module can only fit in one direction due to the notch. Memory size can vary between
sockets.
notch
English
Fig.1
The DIMM socket has a notch, so the DIMM memory module
can only fit in one direction. Insert the DIMM memory module
vertically into the DIMM socket. Then push it down.
Fig.2
Close the plastic clip at both edges of the DIMM sockets to lock
the DIMM module.
Reverse the installation steps when you wish to remove the
DIMM module.
DDR memory module
Fig. 1
Fig. 2
Hardware Installation- 13 -
English
1-5 Installation of Expansion Cards
You can install your expansion card by following the steps outlined below:
1. Read the related expansion card's instruction document before installing the expansion card into
the computer.
2. Remove your computer's chassis cover, screws and slot bracket from the computer.
3. Press the expansion card firmly into expansion slot in motherboard.
4. Be sure the metal contacts on the card are indeed seated in the slot.
5. Replace the screw to secure the slot bracket of the expansion card.
6. Replace your computer's chassis cover.
7. Power on the computer, if necessary, setup BIOS utility of expansion card from BIOS.
8. Install related driver from the operating system.
Installing a AGP expansion card:
Please carefully pull out the small white-drawable
bar at the end of the AGP slot when you try to
AGP Card
install/uninstall the VGA card. Please align the VGA
card to the onboard AGP slot and press firmly
down on the slot. Make sure your VGA card is
locked by the small white-drawable bar.
GA-8S661GXMP(-C) Motherboard - 14 -
1-6 I/O Back Panel Introduction
*
PS/2 Keyboard and PS/2 Mouse Connector
To install a PS/2 port keyboard and mouse, plug the mouse to the upper port (green) and the keyboard to the
lower port (purple).
Parallel Port
The parallel port allows connection of a printer, scanner and other peripheral devices.
Serial Port
Devices like mouses, modems, and etc. can be connected to Serial port.
VGA Port
Monitor can be connected to VGA port.
USB port
Before you connect your device(s) into USB connector(s), please make sure your device(s) such
as USB keyboard, mouse, scanner, zip, speaker...etc. have a standard USB interface. Also make
sure your OS supports USB controller. If your OS does not supportUSB controller, please contact OS vendor for possible patch or driver upgrade. For more information please contact your
OS or device(s) vendors.
LAN Port*
The LAN port provides Internet connection.
Line In
Devices like CD-ROM, walkman etc. can be connected to Line In jack.
Line Out (Front Speaker Out)
Connect the stereo speakers, earphone or front surround channels to this connector.
MIC In
Microphone can be connected to MIC In jack.
English
"*" Only for GA-8S661GXMP
Hardware Installation- 15 -
1-7 Connectors Introduction
English
3 1 2
7
9 12 13
111510
16
1) ATX_12V 10) SUR_CEN
2) ATX 11) SPDIF_IO
3) CPU_FAN 12) F_USB1/F_USB2
4) SYS_FAN 13) CI
5) IDE1/IDE2 14) CLR_CMOS
6) FDD 15) COMB
7) F_AUDIO 16) PWR_LED
8) F_PANEL 17) BAT
9) CD_IN
6
5
17
14
4
8
GA-8S661GXMP(-C) Motherboard - 16 -
1/2) ATX_12V/ATX (Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all
the components on the motherboard. Before connecting the power connector, please make sure
that all components and devices are properly installed. Align the power connector with its
proper location on the motherboard and connect tightly.
The ATX_12V power connector mainly supplies power to the CPU. If the ATX_12V power
connector is not connected, the system will not start.
Caution!
Please use a power supply that is able to handle the system voltage requirements. It is
recommended that a power supply that can withstand high power consumption be used (300W
or greater). If a power supply is used that does not provide the required power, the result can
lead to an unstable system or a system that is unable to start.
English
4
3
11
20
2
1
1
10
Pin No. Definition
1 GND
2 GND
3 +12V
4 +12V
Pin No. Definition
1 3.3V
2 3.3V
3 GND
4 +5V
5 GND
6 +5V
7 GND
8 Power Good
9 5V SB (stand by +5V)
10 +12V
11 3.3V
12 -12V
13 GND
14 PS_ON(soft on/off)
15 GND
16 GND
17 GND
18 -5V
19 +5V
20 +5V
Hardware Installation- 17 -
English
3/4) CPU_FAN / SYS_FAN (Cooler Fan Power Connector)
The cooler fan power connector supplies a +12V power voltage via a 3-pin power connector and
possesses a foolproof connection design.
Most coolers are designed with color-coded power connector wires. A red power connector wire
indicates a positive connection and requires a +12V power voltage. The black connector wire is
the ground wire (GND).
Please remember to connect the power to the cooler to prevent system overheating and failure.
Caution!
Please remember to connect the power to the CPU fan to prevent CPU overheating and failure.
Pin No. Definition
1
CPU_FAN
1
SYS_FAN
1 GND
2 +12V
3 Sense
5) IDE1/IDE2 (IDE Connector)
An IDE device connects to the computer via an IDE connector. One IDE connector can connect to one
IDE cable, and the single IDE cable can then connect to two IDE devices (hard drive or optical drive). If
you wish to connect two IDE devices, please set the jumper on one IDE device as Master and the other
as Slave (for information on settings, please refer to the instructions located on the IDE device).
GA-8S661GXMP(-C) Motherboard - 18 -
40
21
IDE2 Connector IDE1 Connector
40 39
39
21
6) FDD (FDD Connector)
The FDD connector is used to connect the FDD cable while the other end of the cable connects to the
FDD drive. The types of FDD drives supported are: 360KB, 720KB, 1.2MB, 1.44MB and 2.88MB.
Please connect the red power connector wire to the pin1 position.
3334
12
7) F_AUDIO (Front Audio Panel Connector)
Please make sure the pin assigment on the cable is the same as the pin assigment on the MB header.
To find out if the chassis you are buying support front audio panel connector, please contact your
dealer. If you want to use "Front Audio" connector, you must remove the jumpers from pins 5-6,
9-10.
English
10 9
2
Pin No. Definition
1 MIC
2 GND
1
3 MIC_BIAS
4 Power
5 Front Audio (R)
6 Rear Audio (R)/ Return R
7NC
8 No Pin
9 Front Audio (L)
10 Rear Audio (L)/ Return L
Hardware Installation- 19 -
English
8) F_PANEL (Front Panel Connector)
Please connect the power LED, PC speaker, reset switch and power switch etc. of your chassis
front panel to the F_PANEL connector according to the pin assignments below.
MSG+
MSG-
HD-
HD+
Power
Switch
PW+
PW-
RES+
NC
RES-
Reset Switch
Speaker Connector
SPEAK+
SPEAK-
20
19
Message LED/
Power/
Sleep LED
2
1
HD (IDE Hard Disk Active LED) Pin 1: LED anode(+)
Pin 2: LED cathode(-)
SPEAK (Speaker Connector) Pin 1: Power
Pin 2- Pin 3: NC
Pin 4: Data(-)
RES (Reset Switch) Open: Normal
Close: Reset Hardware System
PW (Power Switch) Open: Normal
Close: Power On/Off
MSG(Message LED/Power/Sleep LED) Pin 1: LED anode(+)
Pin 2: LED cathode(-)
NC NC
IDE Hard Disk Active LED
GA-8S661GXMP(-C) Motherboard - 20 -
9) CD_IN (CD IN Connector)
Connect CD-ROM or DVD-ROM audio out to the connector.
10) SUR_CEN
Please contact your nearest dealer for optional SUR_CEN cable.
652
1
Pin No. Definition
1
1 CD-L
2 GND
3 GND
4 CD-R
Pin No. Definition
1 SUR OUTL
2 SUR OUTR
3 GND
4 No Pin
5 CENTER_OUT
6 BASS_OUT
English
Hardware Installation- 21 -
English
11) SPDIF_IO (SPDIF In/ Out)
The SPDIF output is capable of providing digital audio to external speakers or compressed AC3
data to an external Dolby Digital Decoder. Use this feature only when your stereo system has
digital input function. Use SPDIF IN feature only when your device has digital output function.
Be careful with the polarity of the SPDIF_IO connector. Check the pin assignment carefully while
you connect the SPDIF_IO cable. Incorrect connection between the cable and connector will
make the device unable to work or even damage it. For optional SPDIF_IO cable, please contact
your local dealer.
Pin No. Definition
1 Power
2 No Pin
62
1
5
3 SPDIF
4 SPDIFI
5 GND
6 GND
12) F1_USB / F2_USB (Front USB Connectors)
Be careful with the polarity of the front USB connector. Check the pin assignment carefully while
you connect the front USB cable, incorrect connection between the cable and connector will make
the device unable to work or even damage it. For optional front USB cable, please contact your
local dealer.
1
1
GA-8S661GXMP(-C) Motherboard - 22 -
Pin No. Definition
2
10
9
1 Power
2 Power
3 USB DX-
4 USB Dy-
5 USB DX+
6 USB Dy+
7 GND
8 GND
9 No Pin
10 NC
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