Gigabyte GV-NX78T256V-B User manual

Aug. 1, 2005
VGA Card
GV-NX78T256V-B

VGA Card
Aug. 1, 2005
GV-NX78T256V-B

Sep. 28, 2005
VGA Card
GV-NX78T256D

VGA Card
Sep. 28, 2005
GV-NX78T256D

Copyright
© 2005 GIGABYTE TECHNOLOGY CO., LTD
Copyright by GIGA-BYTE TECHNOLOGY CO., LTD. ("GBT"). No part of this manual may be reproduced or transmitted in
any form without the expressed, written permission of GBT.
Trademarks
Third-party brands and names are the property of their respective owners.
Notice
Please do not remove any labels on VGA card, this may void the warranty of this VGA card.
Due to rapid change in technology, some of the specifications might be out of date before publication of this booklet.
The author assumes no responsibility for any errors or omissions that may appear in this document nor does the author make
a commitment to update the information contained herein.
GV-NX78T256V-B /
GV-NX78T256D-ZK
GeForce™7800 GT Graphics Accelerator
User's Manual
Rev. 102
12MD-X78T2VB-102R
* The WEEE marking on the product indicates this product must not be disposed of with user's other household waste
and must be handed over to a designated collection point for the recycling of waste electrical and electronic equipment!!
* The WEEE marking applies only in European Union's member states.

GV-NX78T Series Graphics Accelerator - 2 -
English
Table of Contents
1. Introduction ......................................................................................... 3
1.1. Features ..................................................................................................... 3
1.2. Minimum system requirement ....................................................................... 3
2. Hardware Installation ........................................................................... 4
2.1. Board Layout .............................................................................................. 4
2.2. Hardware installation ................................................................................... 7
3. Software Installation .......................................................................... 10
3.1. Windows®XP driver and utilities installation ................................................ 10
3.1.1. Operating system requirement ................................................................................... 10
3.1.2. DirectX installation ........................................................................................................ 10
3.1.3. Driver installation .......................................................................................................... 12
3.1.4. Utilities on driver CD .................................................................................................... 14
3.1.5. Taskbar icon ................................................................................................................. 16
3.1.6. Display properties pages ............................................................................................. 19
3.1.7. nView properties pages ............................................................................................... 23
3.2. Windows®2000 driver installation .............................................................. 29
4. Troubleshooting Tips ........................................................................ 30
5. Appendix .......................................................................................... 31
5.1. How to Reflash the BIOS ........................................................................... 31
5.1.1. Reflash BIOS in MS-DOS mode ................................................................................. 31
5.2. Resolutions and Color Depth Table (In Windows®XP) ............................... 32

Introduction- 3 -
English
1. Introduction
1.1. Features
•Powered by NVIDIA®GeForce™7800 GT Graphics Processing Unit (GPU)
•Supports the newest PCI Express x 16
•Integrated with 256MB DDR III memory
•Supports DirectX 9.0c
•Supports NVIDIA® SLITM (Scalable Link Interface) technology (note)
•Supports video capture for video editing (VIVO)
(For GV-NX78T256V-B only)
•Supports AV / S-Video and HDTV output
•Supports D-Sub (by adapter) and DVI-I connector
1.2. Minimum system requirement
•IBM®or 100% PC compatible with Pentium®III 650MHz or AMD Athlon 650MHz
class processor or higher
•One PCI Express x 16 slot
•Operating Systems Windows®2000 / Windows®XP
•64MB system memory
•50MB of available disk space for full installation
•CD-ROM or DVD-ROM drive
•Minimum power supply 350W
(Note) SLI technology requires a PCI Express motherboard with two x16 physical connectors.
Graphics cards working in an SLI configuration must be with the same model name
(i.e. GV-NX78T256V-B) and from the same vendor (i.e. GIGABYTE TECHNOLOGY).

GV-NX78T Series Graphics Accelerator - 4 -
English
2. Hardware Installation
2.1. Board Layout
1) GV-NX78T256V-B
VIVO
DVI-I
Connector 2
DVI-I
Connector 1
Analog LCD Monitor
Digital LCD Monitor
DVI Output
VGA Output
DVI-I to D-Sub Adapter
NTSC / PAL TV
Projector
Y
S-Video Output
Pb/AV Output
HDTV
Pr
VIVO
DVI-I Connector 2
DVI-I Connector 1
SLI connector

Hardware Installation- 5 -
English
2) GV-NX78T256D-ZK
TV-out
DVI-I
Connector 2
DVI-I
Connector 1
Analog LCD Monitor
Digital LCD Monitor
DVI Output
VGA Output
DVI-I to D-Sub Adapter
NTSC / PAL TV
Projector
Y
S-Video Output
Pb/AV Output
HDTV
Pr
TV-out
DVI-I Connector 2
DVI-I Connector 1
SLI connector

GV-NX78T Series Graphics Accelerator - 6 -
English
Expansion cards contain very delicate Integrated Circuit (IC) chips. To
protect them against damage from static electricity, you should follow
some precautions whenever you work on your computer.
1. Turn off your computer and unplug power supply.
2. Use a grounded wrist strap before handling computer components. If you do not
have one, touch both of your hands to a safely grounded object or to a metal object,
such as the power supply case.
3. Place components on a grounded antistatic pad or on the bag that came with the
components whenever the components are separated from the system.
The card contains sensitive electric components, which can be easily damaged by
static electricity, so the card should be left in its original packing until it is installed.
Unpacking and installation should be done on a grounded anti-static mat. The operator
should be wearing an anti-static wristband, grounded at the same point as the anti-
static mat.
Inspect the card carton for obvious damage. Shipping and handling may cause damage
to your card. Be sure there are no shipping and handling damages on the card before
proceeding.
DO NOT APPLY POWER TO YOUR SYSTEM IF IT HAS BEEN DAMAGED ON
THE CARD.
In order to ensure your graphics card working correctly, please use official
Gigabyte BIOS only. Use none official Gigabyte BIOS might cause problem
on the graphics card.

Hardware Installation- 7 -
English
2.2. Hardware installation
Installing Your graphics card.
Now that you have prepared your computer, you are ready to install your graphics
accelerator card.
To remove the existing graphics card:
1. Power off the computer and monitor, then
disconnect the display cable from the back
of your computer.
2. Remove the computer cover. If necessary,
consult your computer's manual for help
in removing the cover.
3. Remove any existing graphics card from
your computer.
Or, if your computer has any on-board
graphics capability, you may need to
disable it on the motherboard. For more
information, please see you computer
documentation.
To install your new graphics card:
1. Locate the PCI Express x 16 slot. If
necessary, remove the metal cover from this
slot; then align your graphics card with the
PCI Express x 16 slot, and press it in firmly
until the card is fully seated.

GV-NX78T Series Graphics Accelerator - 8 -
English
2. Replace the screw to fasten the card in place,
and replace the computer cover.
You are now ready to proceed with the installation of the graphics card driver. Please refer
to next chapter for detailed instructions.
After installing the GV-NX78T256V-B/GV-NX78T256D-ZK to your
computer, please remember to connect at lease one power cable on
the graphics card to the power supply connector.
We suggest you to connect both of the two power cables on the
graphics card to the power supply to achieve optimal graphics
performance.
3. Plug the display cable into your graphics
card; then turn on the computer and monitor.
To connect a flat panel directly to your
graphics card, use the DVI-I connector. To
connect a VGA monitor to the DVI-I
connector, plug the DVI-I to D-sub adapter
intothe DVI-I connector,then plug themonitor
cable into the adapter. Connect a flat panel
Connect a VGA monitor via DVI-I to D-sub adapter
To TV / VCR / VIVO
To Flat Panel Display

Hardware Installation- 9 -
English
How NVIDIA® SLITM (Scalable Link Interface) technology works:
In an SLI configuration, two SLI-ready graphics cards with the same model and from the
same manufacturers are connected together via SLI bridge connector in a system that
provides two x 16 PCI Express slots to scale graphics performance. The picture below
shows that two graphics cards are linked in parallel in an SLI configuration.
SLI bridge connector
(provided by motherboard manufacturer)
Two SLI-ready graphics
cards of the same type.
(Example: GV-NX66T128D)
For more information about the hardware configuration of an SLI system, please refer to
motherboard user manual.

GV-NX78T Series Graphics Accelerator - 10 -
English
3.1.2. DirectX installation
Install Microsoft DirectX to enable 3D hardware acceleration support for Windows®2000
or Windows®XP to achieve better 3D performance.
0Note: For software MPEG support in Windows®2000 or Windows®XP, you must install
DirectX first. Users who run Windows XP with Service Pack 2 or above do not need to
install DirectX separately.
Step 1. When autorun window show up, click
the Install DirectX 9 item.
3. Software Installation
In this manual, we assume that your CD-ROM Drive letter to be Drive D:
The installation of Windows®2000 / Windows®XP drivers is very simple. When you insert the
driver CD into your CD-ROM drive, you can see the AUTORUN window (if it does not show
up, run "D:\setup.exe"). Then you can follow the guides to setup your graphics card driver.
(Please follow the subsection 3.1.3 "Driver installation" to install the driver for your graphics
accelerator.)
3.1. Windows®XP driver and utilities installation
3.1.1. Operating system requirement
•When loading the graphics card drivers for the system, please make sure your system
has installed DirectX 9.0c or later version.
•If you install the graphics card drivers for the motherboard, which consist of SIS or VIA
chipsets, please install the appropriate driver program for that motherboard. Or please
contact your motherboard nearest dealer for motherboard driver.

Software Installation- 11 -
English
Step 4. Click "Finish" to restart computer.
Then the DirectX 9 installation is completed.
Installing the components.
Step 2. Choose I accept the agreement and click
the "Next" button.
Step 3. Click the "Next" button.

GV-NX78T Series Graphics Accelerator - 12 -
English
3.1.3. Driver installation
A. New hardware found
After the graphics card is inserted into your computer at the first time, the windows will
automatically detect a new hardware in the system and pop out a "New Hardware Found"
message. The following is the step-by-step installation guide.
Step 1: Found new hardware wizard: Video controller (VGA Compatible)
Click "Next" button to install the driver. (There is a
driver CD disk that came with your graphics
accelerator, please insert it now.)
Or click the "Cancel" button to install the driver
from AUTORUN window.
Step 2: Found new hardware wizard: Searching and installing
The wizard will search for the driver and install it automatically.
Step 3: Found new hardware wizard: Finish
Click the "Finish" button to finish the installation.

Software Installation- 13 -
English
B. Driver installation (Autorun Window)
Insert the driver CD disk into your CD-ROM, and then you can see the AUTORUN window.
If it does not show up, please run "D:\setup.exe".
Step 1. When autorun window show up,
click Install Display Driver item.
Step 2. Click "Next" button.
Step 3. Click "Finish" button to restart
computer. Then the driver installation is
completed.
Windows installings the components.

GV-NX78T Series Graphics Accelerator - 14 -
English
3.1.4. Utilities on driver CD
Insert the driver CD disk into your CD-ROM, and then you can see the AUTORUN window.
If it does not show up, please run "D:\setup.exe".
•Install GIGABYTE Utility (V-Tuner 2):
Step 3. Enter your name and company.
Step 4. Click the Finish button to restart computer.
Then the utilities installation is completed.
Step 2. Click the Next button.
Step 1. When autorun window show up, please click
the Utilities item.
Then click the GIGABYTE Utility item.

Software Installation- 15 -
English
V-Tuner 2
V-Tuner 2 lets you monitor the working frequency of the graphic engine and video memory
(Core Clock and Memory Clock).
The tunning CLK will only be applied when
running 3D mode.
Adjust core
speed
Displays core clock status Displays memory clock status
Adjust memory
speed
Select choice of skinOpens Help page

GV-NX78T Series Graphics Accelerator - 16 -
English
3.1.5. Taskbar icon
After installation of the display drivers, you will find a GIGABYTE icon on the taskbar's
status area. Right-clicking this icon opens the GIGABYTE control panel, showing a menu
composed of shortcut of the graphics card's enhanced and other functions.
You may click the Display Properties item, and then click Settings. Click Advanced after
clicking Settings. Click the appropriate tab to change your display settings.
Right click the icon.
You can link to GIGABYTE website for updated information about the
graphics accelerator, latest drivers, and other information.
Click the VGA Information
item into the "VGA Info" and
"Color Adjust" tabs.