
GIGA-BYTE TECHNOLOGY CO., LTD.

GA-5AX (REV. 1.0)

Device Type          Mainboard
Processor            CX 6X86/IBM 6X86/CX 6X86L/IBM 6X86L/CX 686MX/IBM
                     6X86MX/

                     CX M2/IDT C6/AM K5/AM K6/Pentium/Pentium MMX
Processor Speed      100/120/133/150/166/200/233MHz
Chip Set             ALI Aladdin V
Video Chip Set       None
Maximum Onboard      768MB (SDRAM supported)
Memory
Maximum Video Memory None
Cache                512KB
BIOS                 Award
Dimensions           305mm x 170mm
I/O Options          32-bit PCI slots (4), floppy drive interface, green
                     PC connector, IDE interfaces (2), parallel port, PS/2
                     mouse port, serial ports (2), USB connectors (2), ATX
                     power connector, AGP slot, wake on LAN connector

[Image]

                                CONNECTIONS

  Purpose               Location       Purpose                Location

  AGP slot                 AGP         Wake on LAN              JP8
                                       connector

  ATX power                ATX         Green PC LED         JP9/pins 1 &
  connector                                                      10

  CPU fan power            C2          Reset switch        JP9/pins 2 & 3

  IDE interface 1          CN1         Speaker             JP9/pins 4 - 7

  Floppy drive             CN2         IDE interface LED    JP9/pins 8 &
  interface                                                      17

  IDE interface 2          CN3         Green PC connector   JP9/pins 9 &
                                                                 18

  USB connector 1          CN4         Soft off power       JP9/pins 12 &
                                       supply                    13

  USB connector 2         CN4A         Power LED            JP9/pins 14 -
                                                                 16

  Serial port 2            CN5         PS/2 mouse port          JP11

  Serial port 1            CN6         32-bit PCI slots      PC1  PC4

  Parallel port            CN7

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Keyboard power on enabled              JP10           Pins 1 & 2
                                                              closed

      Keyboard power on disabled             JP10           Pins 2 & 3
                                                              closed

                    DIMM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB       (1) 1M x 64        None          None

     16MB       (1) 2M x 64        None          None

     16MB       (1) 1M x 64    (1) 1M x 64       None

     24MB       (1) 2M x 64    (1) 1M x 64       None

     24MB       (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 4M x 64        None          None

     32MB       (1) 2M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 2M x 64    (1) 2M x 64       None

     40MB       (1) 4M x 64    (1) 1M x 64       None

     40MB       (1) 2M x 64    (1) 2M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 1M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 2M x 64       None

     48MB       (1) 2M x 64    (1) 2M x 64    (1) 2M x 64

     56MB       (1) 4M x 64    (1) 2M x 64    (1) 1M x 64

     64MB       (1) 8M x 64        None          None

                  DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

      64MB        (1) 4M x 64     (1) 2M x 64    (1) 2M x 64

      64MB        (1) 4M x 64     (1) 4M x 64        None

      72MB        (1) 8M x 64     (1) 1M x 64        None

      72MB        (1) 4M x 64     (1) 4M x 64    (1) 1M x 64

      80MB        (1) 8M x 64     (1) 1M x 64    (1) 1M x 64

      80MB        (1) 8M x 64     (1) 2M x 64        None

      80MB        (1) 4M x 64     (1) 4M x 64    (1) 2M x 64

      88MB        (1) 8M x 64     (1) 2M x 64    (1) 1M x 64

      96MB        (1) 8M x 64     (1) 2M x 64    (1) 2M x 64

      96MB        (1) 8M x 64     (1) 4M x 64        None

      96MB        (1) 4M x 64     (1) 4M x 64    (1) 4M x 64

     104MB        (1) 8M x 64     (1) 4M x 64    (1) 1M x 64

     112MB        (1) 8M x 64     (1) 4M x 64    (1) 2M x 64

     128MB       (1) 16M x 64        None            None

     128MB        (1) 8M x 64     (1) 4M x 64    (1) 4M x 64

     128MB        (1) 8M x 64     (1) 8M x 64        None

     136MB       (1) 16M x 64     (1) 1M x 64        None

     136MB        (1) 8M x 64     (1) 8M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 1M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64        None

     144MB        (1) 8M x 64     (1) 8M x 64    (1) 2M x 64

     152MB       (1) 16M x 64     (1) 2M x 64    (1) 1M x 64

     160MB       (1) 16M x 64     (1) 2M x 64    (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64        None

     160MB        (1) 8M x 64     (1) 8M x 64    (1) 4M x 64

     168MB       (1) 16M x 64     (1) 4M x 64    (1) 1M x 64

     176MB       (1) 16M x 64     (1) 4M x 64    (1) 2M x 64

     192MB       (1) 16M x 64     (1) 4M x 64    (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64        None

     192MB        (1) 8M x 64     (1) 8M x 64    (1) 8M x 64

     200MB       (1) 16M x 64     (1) 8M x 64    (1) 1M x 64

     208MB       (1) 16M x 64     (1) 8M x 64    (1) 2M x 64

     224MB       (1) 16M x 64     (1) 8M x 64    (1) 4M x 64

     256MB       (1) 32M x 64        None            None

                  DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

     256MB       (1) 16M x 64     (1) 8M x 64    (1) 8M x 64

     264MB       (1) 32M x 64     (1) 1M x 64        None

     272MB       (1) 32M x 64     (1) 1M x 64    (1) 1M x 64

     272MB       (1) 32M x 64     (1) 2M x 64        None

     288MB       (1) 32M x 64     (1) 2M x 64    (1) 2M x 64

     288MB       (1) 32M x 64     (1) 4M x 64        None

     320MB       (1) 32M x 64     (1) 4M x 64    (1) 4M x 64

     320MB       (1) 32M x 64     (1) 8M x 64        None

     384MB       (1) 32M x 64     (1) 8M x 64    (1) 8M x 64

     384MB       (1) 32M x 64    (1) 16M x 64        None

     384MB       (1) 16M x 64    (1) 16M x 64    (1) 16M x 64

     384MB       (1) 16M x 64    (1) 16M x 64    (1) 16M x 64

     512MB       (1) 32M x 64    (1) 16M x 64    (1) 16M x 64

     512MB       (1) 32M x 64    (1) 32M x 64        None

     768MB       (1) 32M x 64    (1) 32M x 64    (1) 32M x 64

            Note: Board accepts SDRAM memory.

      CACHE CONFIGURATION

      Size          Bank 0

     512KB       (1) 64K x 64

                       CPU SPEED SELECTION (CX 6X86)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  200MHz     75MHz         2x        1 &    Off      On     Off      Off
                                      2

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (IBM 6X86)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  200MHz     75MHz         2x        1 &    Off      On     Off      Off
                                      2

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86L)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  166MHz     66MHz         2x        2 &    Off      On     Off      Off
                                      3

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (IBM 6X86L)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  166MHz     66MHz         2x        2 &    Off      On     Off      Off
                                      3

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  166MHz     66MHz         2x        2 &    Off      On     Off      Off
                                      3

  200MHz     75MHz         2x        1 &    Off      On     Off      Off
                                      2

  200MHz     66MHz        2.5x       2 &    Off      On      On      Off
                                      3

  233MHz     66MHz         3x        2 &    Off     Off      On      Off
                                      3

  233MHz     75MHz        2.5x       1 &    Off      On      On      Off
                                      2

  233MHz     83MHz         2x        2 &     On      On     Off      Off
                                      3

  266MHz     66MHz        3.5x       2 &    Off     Off     Off      Off
                                      3

  266MHz     75MHz         3x        1 &    Off     Off      On      Off
                                      2

  266MHz     83MHz        2.5x       2 &     On      On      On      Off
                                      3

  Note: Pins designated should be in the closed position.

                     CPU SPEED SELECTION (IBM 6X86MX)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  166MHz     66MHz         2x        2 &    Off      On     Off      Off
                                      3

  200MHz     75MHz         2x        1 &    Off      On     Off      Off
                                      2

  200MHz     66MHz        2.5x       2 &    Off      On      On      Off
                                      3

  233MHz     66MHz         3x        2 &    Off     Off      On      Off
                                      3

  233MHz     75MHz        2.5x       1 &    Off      On      On      Off
                                      2

  233MHz     83MHz         2x        2 &     On      On     Off      Off
                                      3

  266MHz     66MHz        3.5x       2 &    Off     Off     Off      Off
                                      3

  266MHz     75MHz         3x        1 &    Off     Off      On      Off
                                      2

  266MHz     83MHz        2.5x       2 &     On      On      On      Off
                                      3

  Note: Pins designated should be in the closed position.

                       CPU SPEED SELECTION (CX M II)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  300MHz     66MHz        3.5x       1 &    Off     Off     Off      Off
                                      2

  Note: Pins designated should be in the closed position.

                       CPU SPEED SELECTION (IDT C6)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  200MHz     66MHz         3x        2 &    Off     Off      On      Off
                                      3

  225MHz     75MHz         3x        1 &    Off     Off      On      Off
                                      2

  266MHz     66MHz         4x        2 &    Off      On     Off      On
                                      3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  133MHz     66MHz         2x        2 &    Off      On     Off      Off
                                      3

  166MHz     66MHz        2.5x       2 &    Off      On      On      Off
                                      3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K6)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  166MHz     66MHz        2.5x       2 &    Off      On      On      Off
                                      3

  200MHz     66MHz         3x        2 &    Off     Off      On      Off
                                      3

  233MHz     66MHz        3.5x       2 &    Off     Off     Off      Off
                                      3

  266MHz     66MHz         4x        2 &    Off      On     Off      On
                                      3

  266MHz    100MHz        2.5x       1 &     On      On      On      Off
                                      2

  300MHz     66MHz        4.5x       2 &    Off      On      On      On
                                      3

  300MHz    100MHz         3x        1 &     On     Off      On      Off
                                      2

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  100MHz     66MHz        1.5x       2 &    Off     Off     Off      Off
                                      3

  133MHz     66MHz         2x        2 &    Off      On     Off      Off
                                      3

  166MHz     66MHz        2.5x       2 &    Off      On      On      Off
                                      3

  200MHz     66MHz         3x        2 &    Off     Off      On      Off
                                      3

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

    CPU      Clock     Multiplier    JP4    S1/1    S1/2    S1/3    S1/8
  speed      speed

  166MHz     66MHz        2.5x       2 &    Off      On      On      Off
                                      3

  200MHz     66MHz         3x        2 &    Off     Off      On      Off
                                      3

  233MHz     66MHz        3.5x       2 &    Off     Off     Off      Off
                                      3

  Note: Pins designated should be in the closed position.

                CPU VOLTAGE SELECTION

  Voltage     S1/4       S1/5      S1/6       S1/7

   Auto       Off        Off        Off        On

    2.0       Off        Off        Off        Off

    2.1       Off        Off        On         Off

    2.2       Off         On        Off        Off

    2.3       Off         On        On         Off

    2.4        On        Off        Off        Off

    2.5        On        Off        On         Off

    2.6        On         On        Off        Off

    2.7        On         On        On         Off

    2.8       Off        Off        Off        On

    2.9       Off        Off        On         On

    3.0       Off         On        Off        On

    3.1       Off         On        On         On

    3.2        On        Off        Off        On

    3.3        On        Off        On         On

    3.4        On         On        Off        On

    3.5        On         On        On         On

