J&W AMD 790GX User manual

AMD 790GX
Socket AM2/AM2+/AM3 Processor Mainboard
User’s Manual
Rev: 1.0, Apr 2009
P/N: 82E790GX10
Motherboard

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We compiled this manual based on our careful attitude, but we can not guarantee the accuracy
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meanings, and we won't commit users' misunderstanding of the typesetting error.
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All of the products name is only for identication, its title belongs to its manufacturer or brand
owner.

Table of Contents
Chapter 1 Introduction ........................................................................................... 3
1.1 Package Checklist ...............................................................................................................
3
1.2 Specications ...................................................................................................................... 4
1.3 Mainboard Layout ...............................................................................................................
5
1.4 Connecting Rear Panel I/O Devices ............................................................................. 6
Chapter 2 Hardware Setup ...................................................................................... 7
2.1 Choosing a Computer Chassis .............................................................................................. 7
2.2 Installing Mainboard ............................................................................................................ 7
2.3 Installation of the CPU and CPU Cooler.................................................................................. 8
2.3.1 Installation of the CPU ............................................................................................................. 8
2.3.2 Installation of the CPU Cooler ................................................................................................... 9
2.4 Installation of Memory Modules ............................................................................................ 9
2.5 Connecting Peripheral Devices............................................................................................. 10
2.5.1 Floppy and IDE Disk Drive Connectors ...................................................................................... 10
2.5.2 Serial ATA Connectors ............................................................................................................. 10
2.5.3 PCI and PCI Express slots ........................................................................................................ 10
Chapter 3 Jumpers & Headers Setup .................................................................... 11
3.1 Checking Jumper Settings ..................................................................................................
11
3.2 CMOS Memory Clearing Header .......................................................................................... 11
3.3 Keyboard Power Function(JKB) ........................................................................................... 11
3.4
Dual BIOS Function (DDR2 & DDR3 BIOS)
........................................................................... 12
3.5 Serial Port Header(JCOM1) ................................................................................................. 1 2
3.6 JHPD Jumper & JDVI_HDMI Jumper .................................................................................... 13
3.7 JHDT Jumper ..................................................................................................................... 13
3.8 JP1/JP2/JP3/JP4 Jumper ..................................................................................................... 14
3.9
D32, D33 LEDs introduction
................................................................................................ 14
3.10 FAN Power Connectors ..................................................................................................... 15
3.11 Front Panel Switches & Indicators Headers ......................................................................... . 15
3.12 Additional USB Port Headers ............................................................................................. . 16
3.13 Front Panel Audio & Internal Audio Connectors .................................................................... . 16
3.14 S/PDIF out connection Header........................................................................................... . 17
3.15 ATX Power Input Connectors ............................................................................................ . 17
Chapter 4 BIOS Setup Utility ................................................................................. 18
4.1 About BIOS Setup ............................................................................................................. 18
4.2 To Run BIOS Setup ........................................................................................................... 18
4.3 About CMOS...................................................................................................................... 18
4.4 The POST (Power On Self Test)........................................................................................... 18
4.5 BIOS Setup — CMOS Setup Utility..................................................................................... .. 19
4.5.1 CMOS Setup Utility ............................................................................................................. . .. 19
4.5.2 Control Keys ........................................................................................................................ 19
4.5.3 Main Setting ........................................................................................................................ 20
4.5.4 Advanced Setting ................................................................................................................. 23
4.5.5 Boot Setting.......................................................................................................................... 27
4.5.6 Security Setting..................................................................................................................... 28
4.5.7 Power Setting........................................................................................................................ . 28
4.5.8 JUSTw00t! Settings............................................................................................................... ... 32
4.5.9 Exit Options........................................................................................................................... . 35
Chapter 5 Driver Installation ................................................................................ 38
APPENDIX 1 (AMIBIOS easy code list only for your reference)...........................
40

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AMD 790GX User's Manual
Chapter 1 Introduction
1.1 Package Checklist
Thank you for choosing our product.
Please check the following packing and accessories, if there is any broken or part missing,
please contact with your franchiser.
• HDD Cable X 1
• Rear I/O Panel X 1
• User Manual X 1
• Driver/Utility CD X 1
• SATA Power Cable X 1
• SATA Single Cable X 2
• FDD Cable X 1 (Optional)
The items listed above are for reference only, and are subject to change without notice.

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AMD 790GX User's Manual
1.2 Specications
CPU
-Supports AMD®Socket AM2+/ AM2 / AM3 processors
-AMD®Phenom™ II / Phenom™ / Athlon™ 64 FX / Athlon™ 64 X2 Dual Core/
Athlon™ 64 / Sempron™ processors
-Hyper Transport Bus 5200/2000 MT/s (HT 3.0/1.0)
Chipset
- AMD®790GX + SB750
- Built in Radeon™ HD 3300 Graphics, DirectX®10 Ready
- Onboard 128MB DDR3 sideport memory (Optional)
Memory
- Supports 2 x 1.8V DDR2 DIMM sockets supporting up to 8 GB of system memory
- Supports 2 x 1.5V DDR3 DIMM sockets supporting up to 8 GB of system memory
- Supports Dual channel memory architecture
- Supports for DDR2 1066/800/667 MHz memory modules
Note: 1066 MHz memory support is dependent on the CPU being used.
- Supports for DDR3 1333/1066/800 MHz memory modules
BIOS
- AMI BIOS,supports Plug&Play
- Supports BIOS ROM Write Protect
- Supports Advanced Power Management ACPI,STR
- 1 x DDR2 BIOS & 1 x DDR3 BIOS (Dual BIOS)
- CPU temperature, Fan speed, System Voltage monitoring
Rear Panel I/O
- 1 x PS/2 Mouse port
- 1 x PS/2 Keyboard port
- 4 x USB 2.0 ports, USB 1.1 is compliant
- 1 x HDMI port
- 1 x DVI port
- 1 x VGA port
- 1 x Coaxial S/PDIF IN port
- 1 x Optical S/PDIF Out port
- 1 x eSATA port
- 1 x RJ45 port
- 6 x Audio jacks (Line In / Line Out / MIC In/ Rear Speaker Out /
Center / Subwoofer Speaker Out / Side Speaker Out)
Internal I/O
Connectors
- 1 x 24-pin ATX main power connector
- 1 x 8-pin ATX 12V power connector
- 1 x Floppy disk drive connector
- 1 x IDE connector
- 6 x SATA 3Gb/s connectors, supports SATA RAID 0, RAID 1, RAID 0+1, RAID 5
and RAID 10
- 1 x CPU fan header
- 2 x System fan headers
- 1 x CD audio in header
- 1 x Front panel header
- 1 x Front panel audio header
- 1 x S/PDIF In header
- 1 x S/PDIF Out header
- 1 x IR header
- 1 x Speaker header
- 1 x EZ power switch (Optional)
- 1 x EZ reset switch (Optional)
- 1 x Serial port header
- 1 x Debug LED (Optional, please reference appendix 1)
- 1 x IEEE 1394a header
- 3 x USB 2.0 headers for additional 6 USB 2.0 ports (by cables)
- 1 x eSATA connector
Sound - Onboard 6-channel/8-channel HD Audio Codec (Optional)
- Front Panel Jumper, provides stereo MIC port on front panel
Onboard LAN - Onboard 10/100/1000Mbps compatible LAN (Optional)
Expansion Slots
- 1 x PCI Express x16 slot (PCI Express 2.0)
- 1 x PCI Express x8 slot
- 1 x PCI Express x4 slot
- 1 x PCI Express x1 slot
- 2 x PCI slots, support PCI Bus interface v2.3 compliant
Form Factor - ATX (243.8mm*304.8mm)

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AMD 790GX User's Manual
1.3 Mainboard Layout
(This picture is only for reference)

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AMD 790GX User's Manual
1.4 Connecting Rear Panel I/O Devices
The rear I/O of this motherboard provides the following I/O ports:
(This picture is only for reference)
• PS/2 Mouse: Connects to PS/2 mouse.
• PS/2 Keyboard: Connects to PS/2 keyboard.
• DVI: Connects to monitor input.
• VGA: Connects to monitor input.
• HDMI:Connects to multimedia devices of HDMI protocol.
• SPDIF IN:This connector provides an S/PDIF-IN connection.
• SPDIF OUT: Connects to analog/digital audio device.
• eSATA:Connects to peripherial SATA devices.
• 1394: The IEEE 1394a port provides high-speed connectivity for video devices, music
equipment, storage peripherals or other portable devices.
• USB: Connects to USB devices such as scanner, digital speakers, monitor, mouse, keyboard,
hub, digital camera, joystick etc.
• LAN: Connects to Local Area Network.
• AUDIO1:
Cen./Sub. (Center / Subwoofer): Connects to the center and subwoofer channel in the 7.1
channel audio system.
R.L./R.R. (Rear Left / Rear Right): Connects to the rear left and rear right channel in the 7.1
channel audio system.
S.L./S.R. (Surround Left / Surround Right): Connects to the surround left and surround right
channel in the 7.1 channel audio system.
Line-In: Connects to the line out from external audio sources.
Line-Out: Connects to the front left and front right channel in the 7.1-channel or regular
2-channel audio system.
Mic-In: Connects to the plug from external microphone.

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AMD 790GX User's Manual
Chapter 2 Hardware Setup
2.1 Choosing a Computer Chassis
• Choose a chassis big enough to install this mainboard.
• As some features for this mainboard are implemented by cabling connectors on the
mainboard to indicators and switches or buttons on the chassis, make sure your chassis
supports all the features required.
• If there is possibility of adopting some more hard drives, make sure your chassis has
sufcient power and space for them.
• Most chassis have alternatives for I/O shield located at the rear panel. Make sure the I/O
shield of the chassis matches the I/O port conguration of this mainboard. You can nd
an I/O shield specically designed for this mainboard in its package.
2.2 Installing Mainboard
Most computer chassis have a base with many mounting holes to allow the mainboard to
be securely attached, and at the same time, prevent the system from short circuits. There
are two ways to attach the mainboard to the
chassis base: (1) with studs, or (2) with spacers.
Basically, the best way to attach the board is with
studs. Only if you are unable to do this should you
attach the board with spacers. Line up the holes on
the board with the mounting holes on the chassis.
If the holes line up and there are screw holes, you
can attach the board with studs. If the holes line
up and there are only slots, you can only attach with
spacers. Take the tip of the spacers and insert them
into the slots. After doing this to all the slots, you can slide the board into position aligned
with slots. After the board has been positioned, check to make sure everything is OK before
putting the chassis back on.
To install this mainboard:
1. Locate all the screw holes on the mainboard and the chassis base.
2. Place all the studs or spacers needed on the chassis base and have them tightened.
3. Face the mainboard’s I/O ports toward the chassis’s rear panel.
4. Line up all the mainboard’s screw holes with those studs or spacers on the chassis.
5. Install the mainboard with screws and have them tightened.
The mainboard and its component layouts illustrated in this chapter were
based mainly on model “AMD 790GX”, unless specically stated.
Always power off the computer and unplug the AC power cord before adding or removing
any peripheral or component. Failing to do so may cause severe damage to your
mainboard and/or peripherals. Plug in the AC power cord only after you have carefully
checked everything.
To prevent shorting the PCB circuit, please REMOVE the metal studs or spacers if they are
already fastened on the chassis base and are without mounting-holes on the mainboard to
align with.

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AMD 790GX User's Manual
2.3 Installation of the CPU and CPU Cooler
Before installing the CPU, please comply with the following conditions:
1. Please make sure that the mainboard supports the CPU.
2. Please take note of the one indented corner of the CPU. 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 CPU cooler.
4. Please make sure the CPU cooler 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 specications. It is not
recommended that the system bus frequency be set beyond hardware specications since
it does not meet the required standards for the peripherals. If you wish to set the frequen-
cy beyond the proper specications, please do so according to your hardware
specications including the CPU, graphics card, memory, hard drive, etc.
2.3.1 Installation of the CPU
1. Unlock the socket by pressing the
lever sideways, then lift it up to a 90
o
.
2. Position the CPU above the socket such
that the CPU corner with the gold
triangle matches the socket corner with
a small triangle.
3. Carefully insert the CPU into the socket
until it ts place.
4. 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.
Figure 1
Figure 2
Figure 3

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AMD 790GX User's Manual
2.3.2 Installation of the CPU Cooler
For proper installation, please kindly refer to the instruction manuals of your CPU Cooler.
2.4 Installation of Memory Modules
This mainboard provides two 240-pin DDRII (Double Data Rate) DIMM slots and two 240-pin
DDR3 DIMM slots, and supports Dual Channel Memory Technology. For dual channel congu-
ation, you always need to install two identical (the same brand, speed, size and chip-type)
memory modules in the DIMM slots to activate Dual Channel Memory Technology. Otherwise,
it will operate at single channel mode.
DIMM1 and DIMM2 slot are DDR2 DIMM slots, DIMM3 and DIMM4 are DDR3 DIMM slots.
Note: DDR2 DIMMs and DDR3 DIMMS CANNOT be used simultaneously!
Please refer to following of gure to match your cpu and DIMM.
Support Model:
1 AM2 CPU DDR2 Memory
2 AM2+ CPU DDR2 Memory
3 AM3 CPU DDR2 Memory
4 AM3 CPU DDR3 Memory
Note: LEDs D32 and/or D33 will light up to warn you for incorrect congurations if you don't
follow the correct CPU and memory combination. Further introduction of D32 and D33
LEDs is on page 14 for your referenece.
DIMM installation: Please insert the DIMMs into the DIMM slots vertically downwards.
Make sure you check the notch key position to be matched with the
DIMMs before you plugging them into the slots.
Note: DDR2 and DDR3 DIMMs have different notch key positions.
To install system memory:
1. Power off the computer and unplug the
AC power cord before installing or
removing memory modules.
2. Locate the DIMM slot on the board.
3. Hold two edges of the DIMM module
carefully, keep away from touching its
connectors.
4. Align the notch key on the module with
the rib on the slot.
5. Firmly press the module into the slots until the ejector tabs at both sides of the slot
automatically snap into the mounting notch. Do not force the DIMM module in with extra
force as the DIMM module only ts in one direction.
6. To remove the DIMM modules, push the two ejector tabs on the slot outward
simultaneously, and then pull out the DIMM module.
Static electricity can damage the electronic components of the computer or optional
boards. Before starting these procedures, ensure that you are discharged of static
electricity by touching a grounded metal object briey.