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   Also See for AOpen MX4GVR

   Summary of Contents for AOpen MX4GVR

  • Page 1

    MX4GVR DOC. NO.: MX4GVR-OL-E0208A...

  • Page 2: Table Of Contents

    JP14 Clear CMOS Data ..............................21 CPU Installation ................................22 CPU Jumper-less Design .............................. 25 AOpen “Watch Dog Timer” ............................26 CPU and System Fan Connector (with H/W Monitoring) ....................29 DIMM Sockets ................................30 Front Panel Connector ..............................32...

  • Page 3

    ATX Power Connector ..............................33 AC Power Auto Recovery .............................. 33 STBY LED and BOOT LED ............................34 IDE and Floppy Connector ............................35 IrDA Connector ................................37 ADD (AGP Digital Display) Slot ............................. 38 WOL (Wake on LAN) ..............................39 CNR (Communication and Network Riser) Expansion Slot ....................

  • Page 4: Table Of Contents

    Battery-less and Long Life Design..........................53 CPU Over-current Protection............................54 Hardware Monitoring ..............................55 AOConfig Utility................................56 Resetable Fuse ................................58 Low ESR Capacitor ............................... 59 Layout (Frequency Isolation Wall) ..........................61 Enlarged Aluminum Heatsink ............................62 Open JukeBox Player..............................63 Vivid BIOS technology..............................

  • Page 5: Table Of Contents

    AC97 ..................................... 90 ACPI (Advanced Configuration & Power Interface) ....................... 90 AGP (Accelerated Graphic Port)............................ 90 AMR (Audio/Modem Riser)............................91 AOpen Bonus Pack CD ..............................91 APM (Advanced Power Management) ........................... 91 ATA (AT Attachment) ..............................91 ATA/66 ..................................91 ATA/100 ..................................

  • Page 6

    CNR (Communication and Networking Riser)........................ 93 CODEC (Coding and Decoding) ............................ 93 DDR (Double Data Rated) SDRAM ..........................93 DIMM (Dual In Line Memory Module) ..........................93 DMA (Direct Memory Access)............................94 ECC (Error Checking and Correction) ........................... 94 EDO (Extended Data Output) Memory .......................... 94 EEPROM (Electronic Erasable Programmable ROM)....................

  • Page 7: Troubleshooting, Technical Support

    PC-133 DIMM ................................97 PC-1600 / PC-2100/ PC-2700 / PC-3200 DDR DRAM....................97 PCI (Peripheral Component Interface) Bus ........................98 PDF Format................................... 98 PnP (Plug and Play) ..............................98 POST (Power-On Self Test) ............................98 RDRAM (Rambus DRAM) ............................. 99 RIMM (Rambus Inline Memory Module) ........................

  • Page 8

    Product Registration ........................110 How to Contact Us ........................111...

  • Page 9

    All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that may appear in this manual, including the products and software described in it.

  • Page 10

    This Online Manual will introduce to the user how this product is installed. All useful information will be described in later chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved in format, we recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD...

  • Page 11: Overview

    ® form factor featuring the Intel 845GV chipsets. As high performance chipset built in the M/B, MX4GVR motherboard support Intel ® Socket 478 Pentium 4 (Willamette / Northwood) and 400/533 MHz Processor System Bus (PSB) clock. In the AGP performance, it has one ADD slot and supports two DVO ports, and the function of these two DVO ports is to support a variety of digital display devices.

  • Page 12

    ® ® Supports Intel Socket 478 Pentium 4 (Willamette / Northwood) 1.4GHz~2.8GHz+ with 400/533MHz Processor System Bus (PSB) design ed for Socket 478 technology. Chipset The 845GV chipset contains two core components designed for the desktop platform: the 845GV Graphics Memory Controller Hub (GMCH), a nd the Intel I/O Controller Hub 4 (ICH4).

  • Page 13: Expansion Slots

    Dynamic Random Access Memory) up to 2GB. Watch Dog Timer ncludes AOpen “Watch Dog Timer” function that can auto-reset system in 4.8 seconds when you fail to system overclocking. 1MHz Stepping Frequency Adjustment Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function allows you to adjust CPU PSB frequency from 100~248MHz by 1MHz stepping adj ustment, and helps your system get maximum performance.

  • Page 14

    Ultra DMA 33/66/100, PIO Modes 3 a nd 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices. On-board AC’97 Sound MX4GVR uses RealTek AC97 sound chip. This on-board audio includes a complete audio recording and playback system.

  • Page 15

    Power Management/Plug and Play Supports the power management function that confirms to the power-saving standards of the U.S. Environmental Protection Agency (EPA) Energy Star program. It also offers Plug-and-Play, which helps save users from configuration problems, thus making the system much user-friendlier. Hardware Monitoring Management Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor module.

  • Page 16

    This page gives you a quick procedure on how to install your system. Follow each step accordingly. Installing CPU and Fan Installing System Memory (DIMM) Connecting Front Panel Cable Connecting IDE and Floppy Cable Connecting ATX Power Cable Connecting Back Panel Cable Power-on and Load BIOS Setup Default Setting CPU Frequency Reboot...

  • Page 17: Motherboard Map

    Motherboard Map Front Audio Connector AUX-IN Connector PC99 Colored Back Panel CD-IN Connector JP28 USB/Keyboard/Mouse RealTek 8100BL Wakeup Enable/Disable AC’97 CODEC Resetable Fuse S/PDIF Connector COM2 Connector SYSFAN2 Connector JP27 USBLAN Wakeup Jumper 4-pin 12V. ATX Power Connector Low ESR Capacitors CNR Connector ADD Slot (For ADD card only)

  • Page 18

    PC-2100/1600 DDR SDRAM Up to 2GB 32-bit PCI Slot x3 DIMM Socket x2 Socket 478 400/533MHz Intel Pentium 4 System Bus CPU(Willamette /Northwood) PCI Bus Intel 845GV ATA 66/100 Primary Channel IDE Drive x4 Secondary ADD Slot Channel RealTek AC97 ICH4 CODEC RealTek...

  • Page 19

    This chapter describes jumpers, connectors and hardware devices of this motherboard. Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and other components. Always observe the following precautions before you install a system component. Do not remove a component from its protective packaging until you are ready to install it. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a component.

  • Page 20

    When you read this online manual and start to assemble your computer system, you may find some of functions are called “Manufacturer Upgrade Optional”, and some are called “User Upgrade Optional”. Though all AOpen motherboards include many amazing and powerful features, in some situations, these powerful features are not used to every user. Hence, we changed some key features as “Manufacturer Upgrade Optional”...

  • Page 21

    You can clear CMOS to restore system default setting. To clear CMOS, follow the procedure below. Turn off the system and unplug the AC power. Remove ATX power cable from connector PWR2. Locate JP14 and short pins 2-3 for a few seconds. Return JP14 to its normal setting by shorting pin 1 &...

  • Page 22

    ® This motherboard supports Intel Pentium 4 Socket 478 series CPU (Willamette / Northwood). Be careful of CPU orientation when you plug it into CPU socket. 2. Locate Pin 1 in the socket and look for mark on the CPU upper interface. 1.

  • Page 23: Cpu Installation

    3. Press down the CPU socket lever and finish CPU installation. CPU cut edge Note: If you do not match the CPU socket Pin 1 and CPU cut edge well, you may damage the CPU. Note: This socket supports Micro-FC-PGA2 package CPU, which is the latest CPU package developed by Intel.

  • Page 24

    This motherboard comes with a retention module attached on the CPU socket when shipped, we strongly recommend you to install AOpen special designed CPU Fan as shown below on the retention module for better heat dissipation. Please install the CPU Fan correctly as the following pictures shown.

  • Page 25

    CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency through the BIOS setup, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less designs are eliminated. There will be no worry of wrong CPU voltage detection. Clock Generator ®...

  • Page 26

    “ ” “ ” AOpen provides a special and useful feature on this motherboard for overclockers. When you power-on the system, the BIOS will check last system POST status. If it succeeded, the BIOS will enable “Watch Dog Timer” function immediately, and set the CPU PSB frequency according to user’s settings stored in the BIOS.

  • Page 27: Cpu Jumper-less Design

    100 and 133 MHz Tip: If your system hangs or fails to boot Home because of overclocking, simply use <Home> key to restore the default setting or you can wait the AOpen “Watch Dog Timer” reset the system after five seconds system will auto-detect hardware again.

  • Page 28

    CPU Core Northwood CPU FSB Clock System Bus Ratio Frequency Warning: Intel 845GV chipset Pentium 4 1.6G 1600MHz 100MHz 400MHz supports maximum 400MHz Pentium 4 1.6G 1600MHz 133MHz 533MHz (100MHz*4) 533MHz Pentium 4 1.7G 1700MHz 133MHz 533MHz (133MHz*4) system bus and 66MHz AGP clock;...

  • Page 29

    Plug in the CPU fan cable to the 3-pin CPUFAN1 connector. If you have chassis fan, you can also plug it on SYSFAN2 or SYSFAN3 connector. SYSFAN2 Connector +12V SENSOR +12V SENSOR CPUFAN1 Connector Note: Some CPU fans do not have sensor pin, so that they cannot support hardware monitoring function.

  • Page 30: Dimm Sockets

    This motherboard has two 184-pin DDR DIMM sockets that allow you to install PC2100 (DDR266) memory or PC1600 (DDR200) memory up to 2GB. DIMM1 DIMM2...

  • Page 31

    Please follow the procedure as shown below to finish memory installation. Make sure the DIMM module’s pin face down and match the socket’s size as depicted below. Pin 1 52 pins 40 pins Insert the module straight down to the DIMM slot with both hands and press down firmly until the DIMM module is securely in place.

  • Page 32

    Attach the power LED, speaker, power and reset switch connectors to the corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, the ACPI & Power LED will keep flashing while the system is in suspend mode. Locate the power switch cable from your ATX housing. It is 2-pin female connector from the housing front panel.

  • Page 33: Atx Power Connector, Ac Power Auto Recovery

    This motherboard comes with a 20-pin and 4-pin ATX power connector. Make sure you plug in the right direction. We strongly recommend you to connect the 4-pin 12V ATX connector before connecting the 20-pin ATX power connector and use standard power supply specially designed for Pentium 4 system.

  • Page 34: Stby Led And Boot Led

    Both STBY LED and BOOT LED are AOpen’s considerate designs that aim at providing you friendly system information. The STBY LED will light up when power is provided to the motherboard. This is a convenient indication for you to check the system power...

  • Page 35

    Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDD and IDE connector. Be careful of the pin1 orientation. Wrong orientation may cause system damage. Secondary Secondary Slave (4th) Master (3rd) IDE 2 (Secondary) IDE 1 (Primary) Pin 1 Primary Secondary Master (1st)

  • Page 36

    IDE1 is also known as the primary channel and IDE2 as the secondary channel. Each channel supports two IDE devices that make a total of four devices. In order to work together, the two devices on each channel must be set differently to Master and Slave mode.

  • Page 37: Irda Connector

    The IrDA connector can be configured to support wireless infrared module, with this module and application software such as Laplink or Windows 95 Direct Cable Connection, the user can transfer files to or from laptops, notebooks, PDA devices and printers. This connector supports HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).

  • Page 38

    AGP Digital Display card is designed by Intel to multiplex the AGP signal interface with two DVO ports, and is designed to plug into the special-designed purple slot as you can see, which we call ADD slot here. The function of these two DVO ports is to support a variety of digital display devices, such as LCDs and Digital-input CRT, and is possible to use in dual-channel mode to support higher resolution and refresh rate, while deliver digital signal from source to display to preserve signal integrity and the viewable image quality.

  • Page 39

    To use Wake On LAN function, you must have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector. The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system.

  • Page 40

    WOL Connector (Ethernet Card Side) WOL Connector (Motherboard Side) Note: This picture is for example only; it may not exactly look the same with the motherboard you purchased.

  • Page 41

    is a riser card specification to replace the AMR (Audio/Modem Riser) that supports V.90 analog modem, multi-channel audio, and phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can be implemented in main chipset and share CPU power. The analogy conversion (CODEC) circuit requires a different and separate circuit design, which is put on CNR card.

  • Page 42

    On the strength of RealTek RTL8100BL LAN controller on board, which is a highly-integrated Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home use, the Ethernet RJ45 connector is located on top of USB connectors. The green LED indicates the link mode, it lights when linking to network and blinking when transferring data.

  • Page 43

    This motherboard provides USB and PS2 keyboard / mouse wake-up function. You can use JP27 / JP28 to enable or disable the resuming of your system from suspend mode with any USB keyboard or mouse connected. JP28 controls 1 USB channel, and JP27 controls 2 USB channel.

  • Page 44

    The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, RJ-45 LAN Connector, COM1 and VGA, Printer, USB, AC97 sound and game ports. The view angle of drawing shown here is from the back panel of the housing. RJ-45 LAN SPP/EPP/ECP Connector Parallel Port PS/2 Mouse...

  • Page 45

    This motherboard provides four ports to connect USB devices such as mouse, keyboard, modem, printer, etc. There is one more front USB connector on the board for you to connect another two USB devices. You can use proper cables to connect USB devices from PC99 back panel or connect the front USB connector to the front panel of chassis.

  • Page 46

    The “CASE OPEN” header provides chassis intrusion-monitoring function. To make this function works, you have to enable it in the system BIOS, connect this header to a sensor somewhere on the chassis. So, whenever the sensor is triggered by lights or by the opening of the chassis, the system will beep to inform you.

  • Page 47

    This connector is used to connect CD Audio cable from CDROM or DVD drive to onboard sound. Note: Though some of the latest versions of Windows support “Digital Audio” through IDE bus. However, in order to use Open Jukebox player, which is driven CD-IN under BIOS, it is a MUST to connect audio cable to CD-IN connector on the motherboard.

  • Page 48

    This GREEN connector is used to connect MPEG Audio cable from MPEG card to onboard sound.

  • Page 49

    This motherboard provides two serial ports. One of them is on back panel connector, and the other is on the upper middle of board. With proper cable, you can connect it to the back panel of chassis. Pin 1 SOUT DOD# RTS# DSR#...

  • Page 50: Front Audio Connector

    If the housing has been designed with an audio port on the front panel, you’ll be able to connect onboard audio to front panel through this connector. By the way, please remove 5-6 and 9-10 jumper caps from the Front Audio Connector before connecting the cable.

  • Page 51

    S/PDIF (Sony/Philips Digital Interface) is a newest audio transfer file format, which provides impressive audio quality through optical fiber and allows you to enjoy digital audio instead of analog audio. Through a specific audio cable, you can connect the S/PDIF connector to other end of the S/PDIF audio module, which bears S/PDIF digital output. Normally there are two S/PDIF outputs as shown, one for RCA connector, the most common one used for consumer audio products, and the other for optical connector with better audio quality.

  • Page 52

    This motherboard comes with an ALC650 CODEC, which supports high quality of 5.1 Channel audio effects, bringing you a brand new audio experience. On the strength of the innovative design of ALC650E, you're able to use standard line-jacks for surround audio output without connecting any external module.

  • Page 53

    This Motherboard implements a Flash ROM and a special circuit that provide you no batter power consumption of current CPU and CMOS Setup configurations. The RTC (real time clock) can also keep running as long as the power cord is plugged. If you lose your CMOS data by accident, you can just reload the CMOS configurations from Flash ROM and the system will recover as usual.

  • Page 54: Cpu Over-current Protection

    CPU, memory, HDD or add-on cards installed on this motherboard is damaged due to component failure, human operating error or other unknown natural reasons. AOpen cannot guarantee that the protection circuit will always work perfectly.

  • Page 55: Hardware Monitoring

    CPU temperature. If any of those systems’ status goes wrong, there will be an alarm through the chassis external speaker or buzzer of motherboard (if having this function and enabled) to warn the user. Fan Speed AOpen H/W Monitoring Detection Circuit Utility...

  • Page 56

    Moreover, AOconfig allows users to save information in *.BMP or *.TXT format which users may collect the system information in detail and send them to AOpen directly for technical support or further diagnosis of system problem. The system page shows the...

  • Page 57

    NOTE: AOconfig can be used in Windows 98SE/ME, NT4.0/2000, or even the latest Windows XP. Please be informed that AOconfig can only be operated in a system equipped with an AOpen motherboard. Meanwhile, all applications must be closed before starting AOconfig.

  • Page 58: Resetable Fuse

    Traditional motherboard uses fuses to prevent Keyboard and port from over-current or shortage. These fuses are soldered onboard that when it is broken (function to protect motherboard), user cannot replace them and result in malfunction of motherboard. With expensive Resetable Fuse, the motherboard can be resumed back to normal function even after the fuse had done its protection job.

  • Page 59: Low Esr Capacitor

    CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail calculation. Not only that, MX4GVR implements 2200μF capacitors, which is much larger than normal capacitor (1000 & 1500μf) and it provides better stability for CPU power.

  • Page 60

    The power circuit of the CPU core voltage must be checked to ensure system stability for high speed CPUs (such as the new Pentium III, or when overclocking). A typical CPU core voltage is 2.0V, so a good design should control voltage between 1.860V and 2.140V.

  • Page 61

    CPU are working in stable condition. The layout of this motherboard implements AOpen’s unique design called “Frequency Isolation Wall”. Separating each critical portion of motherboard into...

  • Page 62

    Cool down CPU and Chipset are important for system reliability. Enlarged aluminum heat sink provides better heat consumption especially when you are trying to over-clock the CPU.

  • Page 63

    Here we are pleased to provide you a brand-new powerful interface—Open JukeBox. Without any cost you can have your PC turn into a fashionable CD player! This latest Open JukeBox motherboard aims at helping you directly operate your CD player on the PC without any hassle of entering Windows operation system.

  • Page 64: Open Jukebox Player

    How Your Open JukeBox Works The operation of Open JukeBox Player is the same as other CD players. By pressing specific keys on the keyboard you will find playing Open JukeBox Player couldn’t be easier than the traditional CD Players. Below is the function description of respective buttons.

  • Page 65

    Your Open JukeBox Settings in BIOS There are three Open JukeBox settings in BIOS as follows. Auto: The default setting is “Auto” with which the Open JukeBox will automatically check the CD player every time you power on. The Open JukeBox will automatically be launched when it detects a music CD in your CD player. Press Insert Key: Choosing this setting will allow a reminder message popped up on the screen during BIOS POST.

  • Page 66

    Except these powerful functions above, Open JukeBox Player is also equipped with another fancy feature for you to change its “skin”. You can download as many skins as you want from AOpen Website, and changing them whenever you want by using this useful utility – EzSkin – which may also be downloaded from our website.

  • Page 67

    VividBIOS to experience the lively vivid colorful POST screen! Unlike earlier graphic POST screen which could occupy the whole screen and mask text information during POST, AOpen VividBIOS deals with graphics and texts separately, and makes them running simultaneously during POST. With this innovative design, VividBios now brings you a beautiful and sleek 256 colors screen without missing any important information shown on POST screen.

  • Page 68

    There are motherboard drivers and utilities in AOpen Bonus CD. You don’t need to install all of them to boot your system. But after you finish the hardware installation, you have to install your operation system first (such as Windows 98) before you install any drivers or utilities.

  • Page 69

    You can use the auto-run menu of Bonus CD. Choose the utility and driver and select model name.

  • Page 70

    ® ® You can install the Intel INF Update Utility from the Bonus Pack CD disc auto-run menu to eliminate the “?” marks, but except Windows 95 and 98 (First version).

  • Page 71

    You can install Intel IAA Driver to increase the performance of software applications and reduce PC boot times. You can find it in AOpen Bonus Pack CD.

  • Page 73

    Introduction: ------------- This document describes the procedure to install Windows 95 (Golden version), Win95A, OSR2, Windows 98/98 SE, Windows 2000, Windows ME, Windows NT v4.0 driver for RealTek RTL8139 PCI Fast Ethernet adapter. [Windows 95 (Golden version), Win95A and OSR2] Installing driver procedure on Microsoft Windows 95 : ----------------------------------------------------- 1.

  • Page 74

    Installing driver procedure on Microsoft Windows NT : ----------------------------------------------------- When you are in Windows NT : 1. In the Main group of NT, select the "Control Panel" icon. 2. In the Control Panel window, choose the "Network" icon. 3. In the Network Settings dialog box, choose the "Add Adapter" button. The Add Network Adapter dialog box appears.

  • Page 76

    This motherboard comes with AC97 CODEC. This audio driver supports Windows 98SE and upper Windows OS; you can find the audio driver from the Bonus Pack CD auto-run menu.

  • Page 77

    * Windows 2000 Installation Guide ************************************************* Installing Driver in Existing Windows 2000 System ************************************************* After enabling the USB 2.0 controller and rebooting your system, Windows 2000 setup will show a "New Hardware Found" dialog box. Under Windows 2000, "Universal Serial Bus (USB) Controller" will be displayed. 1.

  • Page 78

    * Windows XP Installation Guide *********************************************** Installing Driver in Existing Windows XP System *********************************************** After enabling the USB 2.0, Windows XP setup will show a "Found New Hardware" dialog box. Under Windows XP, "Universal Serial Bus (USB) Controller" will be displayed. 1.

  • Page 79

    6. Check USB driver version from My Computer, Local Disk C:, Show the content of this drive, Windows directory, Show the content of this drive, System32 directory, Show the content of this drive, Drivers directory, Show the content of this drive, View, Details.

  • Page 80

    You can install Hardware Monitoring Utility III to monitor CPU temperature, fans and system voltage. The hardware monitoring function is automatically implemented by BIOS and utility software. No hardware installation is needed.

  • Page 81: Phoenix-award Bios

    Most BIOS settings of MX4GVR have been optimized by AOpen’s R&D engineering team. But, the default setting of BIOS still can’t fine-tune the chipset controlling entire system. Therefore, the rest of this chapter intends to guide you the process of configuring your system setup.

  • Page 82

    … AOpen always dedicates to give user a more friendly computer system. Now, we include all function descriptions of BIOS setup program into the BIOS Flash ROM. When you select one function of BIOS setup program, the function description will appear at the right side of screen.

  • Page 83

    Phoenix-Award™ BIOS setup program. The following table provides details about how to use keyboard in the Phoenix-Award™ BIOS setup program. By the way, all products of AOpen also provide a special function in BIOS setup; you can press <F3> key selecting you preferred menu language.

  • Page 84

    Description Load Setup Defaults setting value from CMOS. Load turbo setting value from CMOS. Save changed setting and exit setup program.

  • Page 85

    After you finish jumper settings and connect correct cables, power on and enter the BIOS Setup. Press <Del> during POST (Power-On Self Test) and choose "Load Setup Defaults" for recommended optimal performance. Warning: Please avoid of using "Load Turbo Defaults", unless you are sure your system components (CPU, DRAM, HDD, etc.) are good enough for turbo setting.

  • Page 86

    Windows 95/98, 98SE/ME, NT4.0/2000, or even the latest Windows XP. In the meanwhile, in order to provide a much more user-friendly operating environment, AOpen EzWinFlash is natively designed to have multi-language function to provide easier way for users’ usage in changing BIOS setting.

  • Page 87

    1. Download the new version of BIOS package file from AOpen official web site. (ex: 2. Unzip the download BIOS package (ex: WMX4GVR102.ZIP) with WinZip ( in Windows environment. 3. Save the unzipped files into a folder, for example, WMX4GVR102.EXE & WMX4GVR102.BIN.

  • Page 88: Overclocking

    As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when designing motherboards. Other than above mentioned design criteria, there are power users who are always seeking to push the limitation of the system performance by overclocking which we call them "Overclocker".

  • Page 89

    VGA and HDD is key components for overclocking, for your reference, the following list are what have been successful overclocked in our lab. Please note that AOpen can not guaranty they can be successful overclocked again. Please check the Available Vendor List (AVL) by link to our official website.

  • Page 90: Glossary, Ac97

    AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is 66MHz x 4byte x 2 = 528MB/s. AGP is now moving to 4X mode, 66MHz x 4byte x 4 = 1056MB/s. AOpen is the first company...

  • Page 91: Ata/66

    Unlike ACPI, BIOS controls most APM power management functions. AOpen Suspend to Hard Drive is a good example of APM power management. ATA is the specification of diskette interface. In 80’s, many software and hardware manufacturers instituted the ATA specification together.

  • Page 92: Ata/100, Ata/133

    ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/66 but clock cycle time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire IDE cable, the same as ATA/66.

  • Page 93

    The CNR specification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing LAN, home networking, DSL, USB, wireless, audio and modem subsystems widely used in today's "connected PCs". The CNR specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and Microsoft. Normally, CODEC means a circuit that can do digital to analog conversion and also the analog to digital conversion.

  • Page 94

    Channel for communications between the memory and surrounding devices. The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a special algorithm. The ECC algorithm has the ability to detect double-bit error and automatically correct single-bit error while parity mode can only detect single-bit error.

  • Page 95: Flash Rom

    Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is the first board to implement 256KB (2Mbit) Flash ROM.

  • Page 96

    FSB Clock means CPU external bus clock. CPU internal clock = CPU FSB Clock x CPU Clock Ratio See SMBus. IEEE 1394 is a low-cost digital interface originated by Apple Computer as a desktop LAN and developed by the IEEE 1394 working group.

  • Page 97

    For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is 3-1-1-1, total 6 clocks, which is faster than asynchronous SRAM.

  • Page 98

    Bus for the internal connection of peripheral devices, high-speed data channel between the computer and expansion card. A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix, Linux, Mac … with different PDF reader. You can also read PDF file by web browser such as IE and Netscape, note that you need to install PDF plug-in first (Included in Acrobat Reader).

  • Page 99

    SDRAM comes in 64-bit 168-pin DIMM and operates at 3.3V. AOpen is the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996 A memory space in Flash-ROM to simulate E PROM operation, AOpen motherboard uses Shadow E...

  • Page 100

    SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB are identical. That is why it was called Single In Line. SIMM is made by FPM or DRAM and supports 32-bit data. SIMM had been phased out on current motherboard design.

  • Page 101: Ultra Dma

    Ultra DMA (or, more accurately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the computer’s data path (or bus) to the computer’s random access memory (RAM). The Ultra DMA/33 protocol transfers data in burst mode at a rate of 33.3MB/s, twice as fast as the previous Direct Access Memory (DMA) interface.

  • Page 102

    NEC’s Virtual Channel Memory (VCM) is a new DRAM core architecture that dramatically improves the memory system’s ability to service multimedia requirements. VCM increases memory bus efficiency and performance of any DRAM technology by providing a set of fast static registers between the memory core and I/O pins. Using VCM technology results in reduced data access latency and reduced power consumption.

  • Page 103: Troubleshooting

    If you encounter any trouble to boot you system, follow the procedures accordingly to resolve the problem. Start Turn off the power and unplug the AC power cable, then remove all of the add-on cards and cables, including VGA, IDE, FDD, COM1, COM2 and printer.

  • Page 104

    Continue Install the VGA card. Then connect your monitor and keyboard. Turn on the power and check if the power supply and CPU fan work properly. The problem is probably caused by power supply or motherboard failure. Next Please contact your reseller or local distributor for repairing.

  • Page 105

    Continue Perhaps your VGA card Check if there is display? or monitor is defective. Press <Ctrl> and <Alt> key at the same time, hold them and then press <Del> to reboot the system. It is very possible that your Check if the system keyboard is defective.

  • Page 106

    Continue During system rebooting, press <Del> to enter BIOS setup. Choose “Load Setup Default”. Turn off the system and re-connect IDE cable. The problem should be Check if the system can caused reboot successfully? cable or HDD itself. Re-install the operating system such as Windows 98.

  • Page 107

    Dear Customer, Thanks for choosing AOpen products. To provide the best and fastest service to our customer is our first priority. However, we receive numerous emails and phone-calls worldwide everyday, it is very hard for us to serve everyone on time. We recommend you follow the procedures below and seek help before contact us.

  • Page 108

    News Group: Your problem probably had been answered by our support engineer or professional users on the news group. Contact Distributors/Resellers: We sell our products through resellers and integrators. They should know your system configuration very well and should be able to solve your problem efficiently and provide important reference for you if next time you want to buy something else from them.

  • Page 109

    Model name and BIOS version can be found on upper left corner of first boot screen (POST screen). For example: MX4GVR R1.20 Aug.01.2002 AOpen Inc. Award Plug and Play BIOS Extension v1.0A Copyright © 2002, Award Software, Inc. MX4GVR is model name of motherboard; R1.20 is BIOS version.

  • Page 110

    Be able to join the discussions of web-based news groups. AOpen makes sure that the information you provide is encrypted, so that it cannot be read or intercepted by other people or companies. Further, AOpen will not disclose any of information you submitted under any conditions. Please consult our...

  • Page 111

    Please do not hesitate contact us if you have any problem about our products. Any opinion will be appreciated. Pacific Rim Europe America AOpen Inc. AOpen Computer b.v. AOpen America Inc. Tel: 1-510-489-8928 Tel: 886-2-3789-5888 Tel: 31-73-645-9516 Fax: 1-510-489-1998 Fax: 886-2-3789-5899...

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