NVIDIA XFX 680i LT SLI User manual
User Guide
XFX nForce 680i LT
SLI Motherboard
Installation and Configuration
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
ii
Table of Contents
Before You Begin… .....................................................................................xii
Parts NOT in the Kit......................................................................................... xii
Intentions of the Kit ....................................................................................... xiii
Introduction to the XFX nForce 680i LT SLI Motherboard.......................... 1
Features ...........................................................................................................1
Ultimate Overclocking ....................................................................................1
Guaranteed FSB speeds .................................................................................1
High-speed Memory .......................................................................................1
Comprehensive Overclocking Tools .................................................................2
NVIDIA nTune Utility ..................................................................................2
NV BIOS....................................................................................................2
Designed for NVIDIA SLI Technology..............................................................2
True 2 x16 PCI Express SLI Support ...............................................................2
NVIDIA SLI-Ready Memory ............................................................................2
NVIDIA SLI Certified Components...................................................................3
DualDDR2 Memory Architecture......................................................................3
NVIDIA MediaShield™ Storage .......................................................................3
Multiple Disk Setup ........................................................................................3
DiskAlert System ...........................................................................................3
RAID Morphing ..............................................................................................3
Bootable Multidisk Array.................................................................................4
Networking with NVIDIA nForce .....................................................................4
iii
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
NVIDIA Native Gigabit Ethernet ......................................................................4
NVIDIA FirstPacket™ Technology ...................................................................4
TCP/IP Acceleration .......................................................................................4
High Definition Audio (HDA) ...........................................................................4
USB 2.0.........................................................................................................5
Motherboard Specifications .................................Error! Bookmark not defined.
Unpacking and Parts Descriptions ...............................................................7
Unpacking.........................................................................................................7
Equipment ........................................................................................................7
XFX nForce 680i LT SLI Motherboard..................................................................8
Hardware Installation .................................................................................11
Safety Instructions ..........................................................................................11
Preparing the Motherboard ..............................................................................12
Installing the CPU ........................................................................................12
Installing the CPU Fan..................................................................................13
Installing Memory DIMMs .............................................................................13
Installing the Motherboard ...............................................................................14
Installing the I/O Shield ...............................................................................14
Securing the Motherboard into the Chassis....................................................14
Connecting Cables and Setting Switches ...........................................................15
Power Connections ......................................................................................16
24-pin ATX Power (PWR1) ........................................................................16
8-pin ATX 12V Power (PWR2) ...................................................................17
Auxiliary Power for Graphics (PWR3).........................................................17
Connecting IDE Hard Disk Drives ..................................................................18
Connecting Serial ATA Cables .......................................................................18
Connecting Internal Headers ........................................................................19
Front Panel Header ..................................................................................19
iv
IEEE 1394a..............................................................................................20
USB Headers ...........................................................................................20
Audio ..........................................................................................................22
Fan Connections ..........................................................................................23
COM1 .........................................................................................................24
FDD Connector ............................................................................................24
Speaker ......................................................................................................24
Expansion Slots ...........................................................................................24
Expansion Slots ...........................................................................................24
PCI Slots .................................................................................................25
PCI Express x1 Slot ..................................................................................25
PCI Express x16 Slots...............................................................................25
Jumper Settings ..............................................................................................26
Clear CMOS Jumper: CLR_CMOS ..................................................................26
Configuring the BIOS ..................................................................................27
Enter BIOS Setup ............................................................................................28
Main Menu......................................................................................................28
Standard CMOS Features Menu ........................................................................31
Date and Time.............................................................................................32
IDE Channel and SATA Channel....................................................................32
Drive A........................................................................................................34
Halt On .......................................................................................................34
Memory ......................................................................................................35
Advanced BIOS Features .................................................................................36
Removable Device Priority ............................................................................37
Hard Disk Boot Priority .................................................................................37
Network Boot Priority ...................................................................................37
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Installing and Configuring the XFX nForce 680i LT SLI Motherboard
CPU Internal Cache......................................................................................37
Quick Power On Self Test .............................................................................38
First/Second/Third Boot Device.....................................................................38
Boot Other Device .......................................................................................38
Boot Up NumLock Status..............................................................................38
Security Option............................................................................................39
APIC Mode ..................................................................................................39
MPS Version Control For OS .........................................................................39
Full Screen LOGO Show ...............................................................................39
Advanced Chipset Features ..............................................................................40
System Clocks .............................................................................................41
Frequency Settings ..................................................................................42
HT Multiplier ............................................................................................43
Spread Spectrum .....................................................................................43
FSB & Memory Config ..................................................................................44
CPU Configuration .......................................................................................48
System Voltages ..........................................................................................49
NVMEM Memory Test ...................................................................................51
PCI Clocks......................................................Error! Bookmark not defined.
Load Timing/Voltage Set ..............................................................................51
Save Timing/Voltage Set ..............................................................................52
System BIOS Cacheable ...............................................................................52
HPET Function.............................................................................................52
NVIDIA GPU Ex ...........................................................................................52
Integrated Peripherals Menu ............................................................................53
IDE Function Setup ......................................................................................54
RAID Config ................................................................................................55
USB Config..................................................................................................55
vi
MAC Config .................................................................................................56
IEEE1394 controller .....................................................................................56
HD Audio ....................................................................................................56
IDE HDD Block Mode ...................................................................................56
Onboard FDC Controller ...............................................................................56
Onboard Serial Port 1...................................................................................56
Power Management Setup Menu ......................................................................57
ACPI Function..............................................................................................57
ACPI Suspend Type .....................................................................................57
Soft-Off by PBNT .........................................................................................58
WOL(PME#) From Soft-Off ...........................................................................58
Power On by Alarm ......................................................................................58
POWER ON Function ....................................................................................58
PnP/PCI Configuration Menu ............................................................................59
Init Display First ..........................................................................................60
Reset Configuration Data .............................................................................60
Resources Controlled By...............................................................................60
IRQ Resources.............................................................................................61
PCI/VGA Palette Snoop ................................................................................61
Maximum Payload Size.................................................................................61
System Monitor Menu ......................................................................................62
Dynamic Fan Control....................................................................................63
Software Installation ..................................................................................65
Windows XP Drivers Install ..............................................................................66
Using the NVIDIA Software .......................................................................67
NVIDIA Monitor...............................................................................................68
NVIDIA nTune 5.0 ...........................................................................................69
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Installing and Configuring the XFX nForce 680i LT SLI Motherboard
Manual Tuning ............................................................................................70
Adjust Motherboard Settings.....................................................................70
System Voltages ......................................................................................72
System Fans ............................................................................................72
Memory Timing........................................................................................73
Adjust GPU Settings .................................................................................75
Dynamic BIOS Access ..................................................................................76
Available BIOS Pages ...............................................................................77
General Settings ......................................................................................77
Advanced Settings ...................................................................................77
Boot up Setting........................................................................................78
Automatic Tuning ........................................................................................79
Management ...............................................................................................81
View System Information..........................................................................81
Adjust Custom Rules ................................................................................83
System Stability ..............................................................................................84
Perform Stability Test...................................................................................84
Storage...........................................................................................................85
Health.........................................................................................................86
View Storage Configuration ......................................................................86
Management ...............................................................................................87
Delete Array ............................................................................................87
Rebuild Array...........................................................................................89
Migrating Array ........................................................................................91
Synchronize Array ....................................................................................93
NVIDIA Networking .........................................................................................95
Performance................................................................................................96
First Packet..............................................................................................96
viii
TCP/IP Acceleration .....................................................................................98
Teaming ........................................................Error! Bookmark not defined.
System Update .......................................................Error! Bookmark not defined.
Accessing System Update ...................................Error! Bookmark not defined.
Installing Graphics Cards in an SLI Configuration...................................102
Building an SLI System ..................................................................................102
Determine Component and Operating System Needs ...................................102
Install Your NVIDIA SLI-Ready Parts ...........................................................105
Install NVIDIA SLI Software .......................................................................107
Enable NVIDIA SLI.....................................................................................108
Index .........................................................................................................110
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Installing and Configuring the XFX nForce 680i LT SLI Motherboard
List of Figures
Figure 1. XFX nForce 680i LT SLI Motherboard Layout ........................................9
Figure 2. Chassis Backpanel Connectors ...........................................................10
Figure 3. PWR1 Motherboard Connector...........................................................16
Figure 4. Expansion Slots ................................................................................25
Figure 5. BIOS CMOS Setup Utility Main Menu ..................................................29
Figure 6. Standard CMOS Features Menu .........................................................31
Figure 7. Advanced BIOS Features Menu..........................................................36
Figure 8. Advanced Chipset Features ...............................................................40
Figure 9. System Clocks Menu .........................................................................41
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
FSB & Memory Config Menu ..........................................................44
CPU Configuration Menu................................................................48
System Voltages Menu ..................................................................49
Integrated Peripherals Menu..........................................................53
Power Management Setup Menu....................................................57
PnP/PCI Configuration Menu..........................................................59
System Monitor Menu....................................................................62
NVIDIA Control Panel, Select a Category ........................................67
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
x
Performance Control Panel Categories (nTune) ...............................69
Adjust Motherboard Settings (nTune).............................................71
Adjust GPU Settings (nTune) .........................................................75
Dynamic BIOS Access (nTune).......................................................76
Tune System Menu (nTune) ..........................................................80
View System Information (nTune)..................................................81
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Figure 29.
Adjust Custom Rules (nTune) ........................................................83
Perform Stability Test ....................................................................84
Storage Control Panel Categories (MediaShield) ..............................85
View Storage Configuration (MediaShield) ......................................86
Networking Control Panel Categories..............................................96
SLI Slots on the Motherboard ......................................................105
xi
Parts NOT in the Kit
This kit contains all the hardware necessary to install and connect your new
XFX nForce® 680i LT SLI motherboard. However, it does not contain the
following items that must be purchased separately to make the motherboard
functional.
Intel microprocessor:
Intel Core 2 Extreme, Intel Core 2 Duo Pentium EE, Pentium
Cooling fan for the microprocessor
System memory support:
Supports dual channel DDR2 533/667/800, and up to 800 MHz SLI-Ready
Memory. Supports up to 8 GBs DDR2 memory.
Graphics Card
This motherboard is capable of using the NVIDIA SLI technology. To utilize
this technology requires two SLI-capable graphics cards. When ordering a
graphics card, be sure it is a PCI Express card. The kit does contain the SLI
connector used to connect the two graphics cards. See Installing Graphics Cards
in an
SLI Configuration on page 102.
Power Supply
The power supply requirement is dependent upon the power and the number
of the GPUs you install. If you are going to SLI two graphics cards, you are
going to require more power. As a rule, for one GPU you need a minimum of
a 300 W power supply. If you have two GPUs in an SLI configuration, you
will need a minimum of a 500 W power supply. To calculate the power you
are going to require for your specific configuration, go to www.slizone.com.
Before You Begin…
These instructions tell you how to install each of the parts listed so you can
have a functioning motherboard. As you go through the installation
instructions, we are assuming you have purchased the necessary parts.
xii
Introduction
Intentions of the Kit
This kit provides you with the motherboard and all connecting cables necessary
to install the motherboard into a PC chassis. If you are building a PC, you will
use most of the cables provided in the kit. If however, you are replacing a
motherboard, you will not need many of the cables.
When replacing a motherboard in a PC chassis, you will need to reinstall an
operating system even though the current drives have an operating system.
xiii
Thank you for buying the XFX NFORCE 680i LT SLI Motherboard. This
motherboard offers the tools and performance PC users demand. When
combined with two SLI-Ready NVIDIA GeForce graphics cards, you get
innovative NVIDIA SLI Technology for enhanced system performance.
Features
Introduction to the
XFX nForce 680i LT
SLI Motherboard
Ultimate Overclocking
Unleash the underlying hardware. With comprehensive overclocking tools to
push the limits on front side bus (FSB) speed and support for higher memory
speeds, the NVIDIA nForce 680i LT SLI MCPs were designed for
overclocking.
Guaranteed FSB speeds
Reach FSB speeds of 1333MHz with a CPU that supports this specification.
High-speed Memory
This board supports high-speed SLI-Ready memory up to DDR2-800 to keep
pace with overclocked system components.
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Installing and Configuring the XFX nForce 680i LT SLI Motherboard
Comprehensive Overclocking Tools
Award-winning NVIDIA overclocking tools provide a complete kit of tools
giving everyone from the most veteran enthusiast to the novice overclocker the
ability to unleash the hardware in their PC.
NVIDIA nTune Utility
NVIDIA nTune™ is a Windows-based utility that has added access to more
settings. Adjust CPU and memory speeds without rebooting. You can also
access most BIOS settings from inside Windows without having to go into the
BIOS. Save and automatically load profiles for each application you run.
NV BIOS
NV BIOS delivers easy-to-use tuning to let you have full control over your
hardware including processor voltage tables and memory drive strengths.
Designed for NVIDIA SLI Technology
NVIDIA SLI technology is a revolutionary platform innovation that allows
users to intelligently scale graphics performance by combining multiple
NVIDIA graphics solutions in a single system with an NVIDIA nForce 680i LT
SLI MCP.
True 2 x16 PCI Express SLI Support
Two full-bandwidth, 16-lane PCI Express links ensure maximum graphics
performance for next-generation GPUs and games. True 2 x16 PCI Express
SLI Support offers twice the PCI Express bandwidth of x8 SLI solutions.
NVIDIA SLI-Ready Memory
NVIDIA nForce 680i LT SLI MCP automatically increases bandwidth when
select SLI Certified memory modules are detected.
2
Introduction
NVIDIA SLI Certified Components
Look for other components including NVIDIA® GeForce® GPUs and system
memory that have been certified by NVIDIA to deliver unmatched
performance with XFX nForce 680i LT SLI motherboards. For more
information on SLI Certified components, visit
DualDDR2 Memory Architecture
A state-of-the-art Dual DDR2 memory controller allows high bandwidth and
low latency data access to the CPU and GPU. Ensures data and information are
relayed through the system as quickly as possible for incredible performance.
NVIDIA MediaShield™ Storage
NVIDIA MediaShield is a suite of features that safeguards your most important
digital media assets; always reliable, scalable, and accessible. MediaShield
includes RAID and SATA drive support.
www.SLIZone.com\nForce
.
Multiple Disk Setup
Through a simple wizard-based interface, you can effortlessly set up your drives
for better data protection, faster disk access or maximum storage capacity.
MediaShield automatically selects RAID 0, 1, 0+1 or 5 configurations according
to your needs. Advanced users can access RAID options directly.
DiskAlert System
The event of a disk failure, MediaShield users see an image that highlights which
disk has failed to make it easier to identify, replace, and recover.
RAID Morphing
MediaShield allows users to change their current RAID set-up to another
configuration in a one-step process called morphing. This eliminates the need
to back up data and follow multiple steps in the process.
3
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
Bootable Multidisk Array
MediaShield storage fully supports the use of multi-disk array for loading the
operating system at power-up.
Networking with NVIDIA nForce
NVIDIA networking delivers the highest network throughput at the lowest
CPU utilization. The manageable and stable NVIDIA networking solution
results in better networking management and a lower total cost of ownership.
Only NVIDIA integrates this level of networking features to allow you to take
your online experience to the next level.
NVIDIA Native Gigabit Ethernet
The industry’s fastest Gigabit Ethernet performance eliminates network
bottlenecks and improves overall system efficiency and performance.
NVIDIA FirstPacket™ Technology
Be the ‘King of Ping’ with NVIDIA FirstPacket technology. Get the crystalclear phone conversations and online gaming performance you expect.
NVIDIA FirstPacket technology assures your game data, VoIP conversations,
and large file transfers are delivered according to preferences set by you in an
intuitive wizard.
TCP/IP Acceleration
TCP/IP Acceleration delivers the highest system performance by offloading
CPU-intensive packet filtering tasks in hardware, providing users with a PC
networking environment that is faster.
High Definition Audio (HDA)
High definition audio brings consumer electronics quality sound to the PC
delivering high quality sound from multiple channels. Using HDA, systems can
deliver 192 kHz/32-bit quality for eight channels, supporting new audio
formats.
4
Introduction
USB 2.0
USB 2.0 is standard plug-and-play interface that provides easy-to-use
connectivity for USB devices.
Motherboard Specifications
Size
ATX form factor of 12 inch x 9.6 inch
Microprocessor support
Intel Core 2 Extreme, Intel Core 2 Quad, Intel Core 2 Duo, Pentium EE,
Pentium
Operating systems:
Supports Windows XP 32bit/64bit and Windows Vista 32bit/64bit
Contains NVIDIA nForce 680i LT SLI MCP and SPP
System Memory support
Supports dual channel JEDEC DDR2-800 and SLI-Ready memory up to 800
MHz. Supports up to 8 GBs DDR2 memories.
USB 2.0 Ports
Supports hot plug
Eight USB 2.0 ports (four rear panel ports, four onboard USB headers)
Supports wake-up from S1 and S3 mode
Supports USB 2.0 protocol up to 480 Mbps transmission rate
Onboard Serial ATA II
300MBps data transfer rate
Six Serial ATA II connectors
NVIDIA MediaShield RAID with support for RAID 0, RAID 1, RAID
0+1, RAID 5, and JBOD
Supports hot plug and NCQ (Native Command Queuing )
Onboard LAN
Single LAN interface built-in onboard
Supports 10/100/1000 Mbit/sec Ethernet
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Installing and Configuring the XFX nForce 680i LT SLI Motherboard
Onboard 1394
Support hot plug
Two 1394a ports (one rear panel port, one onboard header) with rate of
transmission at 400 Mbps
Onboard Audio
Azalia High-Definition audio
Supports 8-channel audio
Supports S/PDIF output
Supports Jack-Sensing function
Dual PCI Express x16 Support
Supports 4 GB/sec (8 GB/sec concurrent) bandwidth
Low power consumption and power management features
Green Function
Supports ACPI (Advanced Configuration and Power Interface)
Supports S0 (normal), S1 (power on suspend), S3 (suspend to RAM), S4
(Suspend to disk - depends on OS), and S5 (soft - off)
Expansion Slots
Two PCI slots
Two PCI Express x1 slot
Two PCI Express x16 Graphics slots
6
Unpacking
The XFX nForce 680i LT SLI motherboard comes with all the necessary cables
for adding a motherboard to a new chassis. If you are replacing a motherboard,
you may not need many of these cables.
Be sure to inspect each piece of equipment shipped in the packing box. If
anything is missing or damaged, contact your reseller.
All parts shipped in this kit are RoHS-compliant (lead-free) parts.
Unpacking and
Parts Descriptions
Equipment
The following equipment is included in the XFX nForce 680i LT SLI
motherboard box.
XFX nForce 680i LT SLI Motherboard
This PCI Express motherboard contains the
NVIDIA nForce 680i LT SLI SPP and MCP and is
7
SLI-ready.
I/O Shield
Installs in the chassis to block radio frequency
transmissions, protect internet components from
dust and foreign objects and aids in proper airflow
within the chassis.
Floppy Cable
Used to attach a floppy drive to the motherboard.
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
2-Port SATA Power Cable
1394 Cable
Provides two additional 1394 ports to either the
front or back panels of the chassis.
USB 2.0 4-Port Cable
Provides four additional USB ports to either the
front or back panels of the chassis.
SATA Signal Cable (Qty Two)
Used to support the Serial ATA protocol and each
one connects a single drive to the motherboard
IDE-ATA 133 HDD Cable
SLI Connector
Used to connect two graphic cards installed in the
x16 PCI Express slots in an SLI configuration.
XFX nForce 680i LT SLI
Motherboard
The XFX nForce 680i LT SLI motherboard with the NVIDIA nForce 680i LT
SLI SPP and MCP processors is a PCI Express, SLI-ready motherboard. Figure
1 shows the motherboard and Figures 2 shows the back panel connectors.
8
Unpacking and Parts Description
4
5
9
8
11
10
7
6
14
15
16
14
18 19 18
21
21 19
23
24
22
9
12
13
20
17
2
3
1. CPU Socket 9. Serial-ATA connectors 17. Front Audio connector
2. NVIDIA SPP with Active fan 10. NVIDIA MCP 18. PCI slots
3. CPU fan connector 11. Floppy drive connector 19. PCI Express x16 slots (SLI)
4. DDR DIMM Slots 0 - 3 12. USB headers 20. NVIDIA MCP fan connector
5. 24-pin ATX Power Connector 13. Motherboard battery 21. PCI Express x1 slot
6. IDE Connector 14. Fan Headers 22. NVIDIA SPP fan connector
7. Front panel connector 15. Serial connector 23. Backpanel connectors (Figure 2)
8. AUX PEX Power connector 16. Clear CMOS 24. 8-pin ATX_12V power connector
Figure 1. XFX nForce 680i LT SLI Motherboard Layout
9
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
2 5
6
8
7 3 4
1
1. PS/2 Mouse Port
2. PS/2 Keyboard Port
3. 1394a (Firewire) Port
4. USB 2.0 ports (two)
5. SPDIF output
6. Port 2-Channel 4-Channel 6-Channel/8-Channel
Blue Line-In Line-In Line-In
Green Line-Out Front Speaker Out Front Speaker Out
Pink Mic In Mic In Mic In
Orange Center/Subwoofer
Black Rear Speaker Out Rear Speaker Out
Grey
7. USB 2.0 Ports (two)
8. Lan Port with LEDs to indicate status.
• Yellow/Light Up/Blink = 10 Mbps/Link/Activity
• Yellow and Green/Light Up/Blink = 100 Mbps/link/Activity
• Green/Light Up/Blink = 1000 Mbps/Link/Activity
10
Figure 2. Chassis Backpanel Connectors
This section will guide you through the installation of the motherboard. The
topics covered in this section are:
Preparing the motherboard
Installing the CPU
Installing the CPU fan
Installing the memory
Installing the motherboard
Connecting cables and setting switches
Safety Instructions
Hardware Installation
To reduce the risk of fire, electric shock, and injury, always follow basic
safety precautions.
Remember to remove power from your computer by disconnecting the
AC main source before removing or installing any equipment from/to the
computer chassis.
11
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
notches on the CPU
Preparing the Motherboard
The motherboard shipped in the box does
need to purchase a CPU, a CPU fan assembly, and memory to complete this
installation.
Installing the CPU
Be very careful when handling the CPU. Hold the processor only by the edges
and do not touch the bottom of the processor.
Use the following procedure to install the CPU onto
the motherboard.
1. Remove the protective socket cover on the load
plate which is used to protect the socket when
there is no CPU installed.
2. Unhook the socket lever by pushing down and away
from the socket.
3. Lift the load plate.
4. Remove the processor from its protective cover,
making sure you hold it only by the edges.
It is a good idea to save the cover so that
whenever you remove the CPU, you have a safe
place to store it.
5. Align the notches in the processor with the
notches on the socket.
6. Lower the processor straight down into the socket
with out tilting or sliding it into the socket
not
contain a CPU or memory. You
Align notches with
12
Note: Make sure the CPU is fully seated and level in the
socket.
7. Close the load plate over the CPU and press down
while you close and engage the socket lever.
Hardware Installation
CPU side
Installing the CPU Fan
There are many different fan types that can be used with this motherboard.
Follow the instructions that came with your fan assembly. Be sure that the fan
orientation is correct for your chassis type and your fan assembly.
Installing Memory DIMMs
Your new motherboard has four 1.8V 240-pin slots for DDR2 memory. These
slots support 256 Mb, 512 Mb and 1 Gb DDR2 technologies for x8 and x16
devices. They also support dual channel DDR2 memory technology up to
10.7GB/s. There must be at least one memory bank populated to ensure
normal operation. Use the following the recommendations for installing
memory. (See Figure 1 on page 9 for the location of the memory slots on the
card)
One DIMM: Install into slot 0. You can install the DIMM into any slot,
however, slot 0 is preferred.
Two DIMMs: Install into either slots 0 and 1 or 2 and 3. To take full
advantage of dual-channel memory, alternating slots should be populated. For
example with two DIMMs, slots 0 and 1 should be used.
Four DIMMS: Install into slots 0, 1, 2, and 3.
DIMM Slot 0
DIMM Slot 2
DIMM Slot 1
DIMM Slot 3
Card-edge side
Use the following procedure to install memory DIMMs into the slots on the
motherboard. Note that there is only one gap near the center of the DIMM slot.
This slot matches the slot on the memory DIMM to ensure the component is
installed properly.
1. Unlock a DIMM slot by pressing the module clips outward.
2. Align the memory module to the DIMM slot, and insert the module
vertically into the DIMM slot. The plastic clips at both sides of the DIMM
slot automatically lock the DIMM into the connector.
13
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
Installing the Motherboard
The sequence of installing the motherboard into the chassis depends on the
chassis you are using and if you are replacing an existing motherboard or
working with an empty chassis. Determine if it would be easier to make all the
connections prior to this step or to secure the motherboard and then make all
the connections. Use the following procedure to install the I/O shield and
secure the motherboard into the chassis.
Note: Be sure that the CPU fan assembly has enough clearance for the chassis
covers to lock into place and for the expansion cards. Also make sure the
CPU Fan assembly is aligned with the vents on the covers.
Installing the I/O Shield
The motherboard kit comes with an I/O shield that is used to block radio
frequency transmissions, protects internal components from dust and foreign
objects, and promotes correct airflow within the chassis.
Before installing the motherboard, install the I/O shield from the inside of the
chassis. Press the I/O shield into place and make sure it fits securely. If the
I/O shield does not fit into the chassis, you would need to obtain the proper
size from the chassis supplier.
Securing the Motherboard into the Chassis
Most computer chassis have a base with mounting studs or spacers to allow the
mother board to be secured to the chassis and help to prevent short circuits. If
there are studs that do not align with a mounting hole on the motherboard, it is
recommended that you remove that stud to prevent the possibility of a short
circuit.
1. Carefully place the motherboard onto the studs/spacers located inside the
chassis.
2. Align the mounting holes with the studs/spacers.
3. Align the connectors to the I/O shield.
4. Ensure that the fan assembly is aligned with the chassis vents according to
the fan assembly instruction.
5. Secure the motherboard with a minimum of eight-to-ten screws.
14
Hardware Installation
Connecting Cables and
Setting Switches
This section takes you through all the connections and switch settings necessary
on the motherboard. This will include:
Power Connections
24-pin ATX power (
8-pin ATX 12V power (
Auxiliary power for graphics (
Internal Headers
Front panel
IEEE 1394a
USB Headers
Audio
Speaker
COM
FDD
IDE
Serial ATA II
Chassis Fans
Rear panel USB 2.0 Adapter
Expansion slots
CMOS jumper settings
PWR1
PWR2
)
)
PWR3
)
See Figure 1 on page 9 to locate the connectors and jumpers referenced in the
following procedure.
15
Installing and Configuring the XFX nForce 680i LT SLI Motherboard
Power Connections
This motherboard requires an ATX power supply. To support a PCI Express
motherboard with the addition of dual graphics cards using NVIDIA SLI
technology, you are going to need a minimum of a 500W power supply. Make
sure you have enough power to cover all the expansion cards you will be
installing. To determine what you power requirements are for your specific
configuration, refer to www.slizone.com.
24-pin ATX Power
PWR1
is the main power supply connector located along the edge of the board
(PWR1)
next to the DIMM slots. Make sure that the power supply cable and pins are
properly aligned with the connector on the motherboard. Firmly plug the power
supply cable into the connector and make sure it is secure.
PWR1 connector
Plug power cable from system
power supply to PWR1
Card edge
Figure 3. PWR1 Motherboard Connector
Table 1. PWR1 Pin Assignments
Connector Pin Signal Pin Signal
24 13
12 1
1 +3.3V 13 +3.3V
2 +3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 PWROK 20 RSVD
9 +5V_AUX 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 +3.3V 24 GND
16
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