
ABIT COMPUTER CORPORATION

PX5N

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

                 IBM 6X86MX/AM K5/AM K6/Pentium/Pentium MMX
Processor Speed  75/90/100/120/133/150/166/200/233/266/300MHz
Chip Set         Intel 430TX
Maximum Onboard  256MB (EDO & SDRAM supported)
Memory
Cache            512KB
BIOS             Award
Dimensions       254mm x 218mm
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), IR connector, USB connector, ATX
                 power connector, soft off power supply

[Image]

                                CONNECTIONS

  Purpose               Location       Purpose                Location

  ATX power                ATX         32-bit PCI slots      PC1  PC4
  connector

  CPU fan power            C1          Power LED &         PN1/pins 1 - 5
                                       keylock

  Serial port 1            CN1         IDE interface LED   PN1/pins 7 & 8

  Serial port 2            CN2         Soft off power       PN1/pins 10 &
                                       supply                    11

  Floppy drive             CN3         Green PC connector   PN1/pins 13 &
  interface                                                      14

  Parallel port            CN4         Reset switch        PN2/pins 1 & 2

  IDE interface 2          CN5         Speaker             PN2/pins 4  7

  IDE interface 1          CN6         Green PC LED         PN2/pins 9 &
                                                                 10

  PS/2 mouse port          CN7         USB connector            USB

  IR connector             IR1

              SIMM CONFIGURATION

         Size                  Bank 0

          8MB                (2) 1M x 36

         16MB                (2) 2M x 36

         32MB                (2) 4M x 36

         64MB                (2) 8M x 36

         128MB              (2) 16M x 36

         256MB              (2) 32M x 36

            Note: Board accepts EDO memory.

             DIMM CONFIGURATION

     Size          Bank 1        Bank 2

      8MB        (1) 1M x 64      None

     16MB        (1) 2M x 64      None

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

     24MB        (1) 2M x 64   (1) 1M x 64

     32MB        (1) 4M x 64      None

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

     40MB        (1) 4M x 64   (1) 1M x 64

     48MB        (1) 4M x 64   (1) 2M x 64

     64MB        (1) 8M x 64      None

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

     72MB        (1) 8M x 64   (1) 1M x 64

     80MB        (1) 8M x 64   (1) 2M x 64

     96MB        (1) 8M x 64   (1) 4M x 64

           DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1

     128MB       (1) 16M x 64        None

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

     136MB       (1) 16M x 64     (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64

     256MB       (1) 16M x 64    (1) 16M 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     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  120MHz     50MHz         2x          On       Off       Off       Off

  133MHz     55MHz         2x          On       Off       Off       Off

  150MHz     60MHz         2x          On       Off       Off       Off

   166MHz    66MHz         2x          On       Off       Off       Off
    (N)

   166MHz    66MHz         2x          On       Off       Off       Off
    (T)

  200MHz     75MHz         2x          On       Off       Off       Off

  Note: N = normal mode. T = turbo mode.

                   CPU SPEED SELECTION (CX 6X86, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

  120MHz     50MHz         2x          Off       On       On        On

  133MHz     55MHz         2x          Off      Off       On        On

  150MHz     60MHz         2x          Off       On       On        Off

   166MHz    66MHz         2x          Off       On       Off       On
    (N)

   166MHz    66MHz         2x          Off      Off       Off       Off
    (T)

  200MHz     75MHz         2x          Off      Off       On        Off

  Note: N = normal mode. T = turbo mode.

                      CPU SPEED SELECTION (IBM 6X86)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  120MHz     50MHz         2x          On       Off       Off       Off

  133MHz     55MHz         2x          On       Off       Off       Off

  150MHz     60MHz         2x          On       Off       Off       Off

   166MHz    66MHz         2x          On       Off       Off       Off
    (N)

   166MHz    66MHz         2x          On       Off       Off       Off
    (T)

  200MHz     75MHz         2x          On       Off       Off       Off

  Note: N = normal mode. T = turbo mode.

                   CPU SPEED SELECTION (IBM 6X86, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

  120MHz     50MHz         2x          Off       On       On        On

  133MHz     55MHz         2x          Off      Off       On        On

  150MHz     60MHz         2x          Off       On       On        Off

   166MHz    66MHz         2x          Off       On       Off       On
    (N)

   166MHz    66MHz         2x          Off      Off       Off       Off
    (T)

  200MHz     75MHz         2x          Off      Off       On        Off

  Note: N = normal mode. T = turbo mode.

                      CPU SPEED SELECTION (CX 6X86L)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  120MHz     50MHz         2x          On       Off       Off       Off

  133MHz     55MHz         2x          On       Off       Off       Off

  150MHz     60MHz         2x          On       Off       Off       Off

   166MHz    66MHz         2x          On       Off       Off       Off
    (N)

   166MHz    66MHz         2x          On       Off       Off       Off
    (T)

  200MHz     75MHz         2x          On       Off       Off       Off

  Note: N = normal mode. T = turbo mode.

                   CPU SPEED SELECTION (CX 6X86L, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

  120MHz     50MHz         2x          Off       On       On        On

  133MHz     55MHz         2x          Off      Off       On        On

  150MHz     60MHz         2x          Off       On       On        Off

   166MHz    66MHz         2x          Off       On       Off       On
    (N)

   166MHz    66MHz         2x          Off      Off       Off       Off
    (T)

  200MHz     75MHz         2x          Off      Off       On        Off

  Note: N = normal mode. T = turbo mode.

                      CPU SPEED SELECTION (IBM 6X86L)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  120MHz     50MHz         2x          On       Off       Off       Off

  133MHz     55MHz         2x          On       Off       Off       Off

  150MHz     60MHz         2x          On       Off       Off       Off

   166MHz    66MHz         2x          On       Off       Off       Off
    (N)

   166MHz    66MHz         2x          On       Off       Off       Off
    (T)

  200MHz     75MHz         2x          On       Off       Off       Off

  Note: N = normal mode. T = turbo mode.

                  CPU SPEED SELECTION (IBM 6X86L, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

  120MHz     50MHz         2x          Off       On       On        On

  133MHz     55MHz         2x          Off      Off       On        On

  150MHz     60MHz         2x          Off       On       On        Off

   166MHz    66MHz         2x          Off       On       Off       On
    (N)

   166MHz    66MHz         2x          Off      Off       Off       Off
    (T)

  200MHz     75MHz         2x          Off      Off       On        Off

  Note: N = normal mode. T = turbo mode.

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

   150MHz    66MHz         2x          On       Off       Off       Off
    (N)

   150MHz    66MHz        2.5x         On        On       Off       Off
    (T)

  166MHz     60MHz        2.5x         On        On       Off       Off

   200MHz    66MHz        2.5x         On        On       Off       Off
    (N)

   200MHz    66MHz        2.5x         On        On       Off       Off
    (T)

  200MHz     75MHz         2x          On       Off       Off       Off

   233MHz    66MHz         3x          Off       On       Off       Off
    (N)

   233MHz    66MHz         3x          Off       On       Off       Off
    (T)

  233MHz     75MHz        2.5x         On        On       Off       Off

  233MHz     83MHz         2x          On       Off       Off       Off

   266MHz    66MHz        3.5x         Off      Off       Off       Off
    (N)

   266MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                  CPU SPEED SELECTION (CX 6X86MX, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

   150MHz    66MHz         2x          Off       On       Off       On
    (N)

   150MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

  166MHz     60MHz        2.5x         Off       On       On        Off

   200MHz    66MHz        2.5x         Off       On       Off       On
    (N)

   200MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

  200MHz     75MHz         2x          Off      Off       On        Off

   233MHz    66MHz         3x          Off       On       Off       On
    (N)

   233MHz    66MHz         3x          Off      Off       Off       Off
    (T)

  233MHz     75MHz        2.5x         Off      Off       On        Off

  233MHz     83MHz         2x          Off      Off       Off       On

   266MHz    66MHz        3.5x         Off       On       Off       On
    (N)

   266MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                     CPU SPEED SELECTION (IBM 6X86MX)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

   150MHz    66MHz         2x          On       Off       Off       Off
    (N)

   150MHz    66MHz        2.5x         On        On       Off       Off
    (T)

  166MHz     60MHz        2.5x         On        On       Off       Off

   200MHz    66MHz        2.5x         On        On       Off       Off
    (N)

   200MHz    66MHz        2.5x         On        On       Off       Off
    (T)

  200MHz     75MHz         2x          On       Off       Off       Off

   233MHz    66MHz         3x          Off       On       Off       Off
    (N)

   233MHz    66MHz         3x          Off       On       Off       Off
    (T)

  233MHz     75MHz        2.5x         On        On       Off       Off

  233MHz     83MHz         2x          On       Off       Off       Off

   266MHz    66MHz        3.5x         Off      Off       Off       Off
    (N)

   266MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                  CPU SPEED SELECTION (IBM 6X86MX, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

   150MHz    66MHz         2x          Off       On       Off       On
    (N)

   150MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

  166MHz     60MHz        2.5x         Off       On       On        Off

   200MHz    66MHz        2.5x         Off       On       Off       On
    (N)

   200MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

  200MHz     75MHz         2x          Off      Off       On        Off

   233MHz    66MHz         3x          Off       On       Off       On
    (N)

   233MHz    66MHz         3x          Off      Off       Off       Off
    (T)

  233MHz     75MHz        2.5x         Off      Off       On        Off

  233MHz     83MHz         2x          Off      Off       Off       On

   266MHz    66MHz        3.5x         Off       On       Off       On
    (N)

   266MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                        CPU SPEED SELECTION (AM K5)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

   75MHz     50MHz        1.5x         Off      Off       Off       Off

   90MHz     60MHz        1.5x         Off      Off       Off       Off

   100MHz    66MHz        1.5x         Off      Off       Off       Off
    (N)

   100MHz    66MHz        1.5x         Off      Off       Off       Off
    (T)

  120MHz     60MHz         2x          Off      Off       Off       Off

   133MHz    66MHz         2x          On       Off       Off       Off
    (N)

   133MHz    66MHz         2x          On       Off       Off       Off
    (T)

  150MHz     60MHz        2.5x         On        On       Off       Off

   166MHz    60MHz        2.5x         On        On       Off       Off
    (N)

   166MHz    66MHz        2.5x         On        On       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                    CPU SPEED SELECTION (AM K5, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

   75MHz     50MHz        1.5x         Off       On       On        On

   90MHz     60MHz        1.5x         Off       On       On        Off

   100MHz    66MHz        1.5x         Off       On       Off       On
    (N)

   100MHz    66MHz        1.5x         Off      Off       Off       Off
    (T)

  120MHz     60MHz         2x          Off       On       On        Off

   133MHz    66MHz         2x          Off       On       Off       On
    (N)

   133MHz    66MHz         2x          Off      Off       Off       Off
    (T)

  150MHz     60MHz        2.5x         Off       On       On        Off

   166MHz    60MHz        2.5x         Off       On       Off       On
    (N)

   166MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                        CPU SPEED SELECTION (AM K6)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

   166MHz    66MHz        2.5x         On        On       Off       Off
    (N)

   166MHz    66MHz        2.5x         On        On       Off       Off
    (T)

   200MHz    66MHz         3x          Off       On       Off       Off
    (N)

   200MHz    66MHz         3x          Off       On       Off       Off
    (T)

   233MHz    66MHz        3.5x         Off      Off       Off       Off
    (N)

   233MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

   266MHz    66MHz         4x          On       Off       On        Off
    (N)

   266MHz    66MHz         4x          On       Off       On        Off
    (T)

   300MHz    66MHz        4.5x         On        On       On        Off
    (N)

   300MHz    66MHz        4.5x         On        On       On        Off
    (T)

  Note: N = normal mode. T = turbo mode.

                    CPU SPEED SELECTION (AM K6, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

   166MHz    66MHz        2.5x         Off       On       Off       On
    (N)

   166MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

   200MHz    66MHz         3x          Off       On       Off       On
    (N)

   200MHz    66MHz         3x          Off      Off       Off       Off
    (T)

   233MHz    66MHz        3.5x         Off       On       Off       On
    (N)

   233MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

   266MHz    66MHz         4x          Off       On       Off       On
    (N)

   266MHz    66MHz         4x          Off      Off       Off       Off
    (T)

   300MHz    66MHz        4.5x         Off       On       Off       On
    (N)

   300MHz    66MHz        4.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                        CPU SPEED SELECTION (INTEL)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

   75MHz     50MHz        1.5x         Off      Off       Off       Off

   90MHz     60MHz        1.5x         Off      Off       Off       Off

   100MHz    66MHz        1.5x         Off      Off       Off       Off
    (N)

   100MHz    66MHz        1.5x         Off      Off       Off       Off
    (T)

  120MHz     60MHz         2x          On       Off       Off       Off

   133MHz    66MHz         2x          On       Off       Off       Off
    (N)

   133MHz    66MHz         2x          On       Off       Off       Off
    (T)

  150MHz     60MHz        2.5x         On        On       Off       Off

   166MHz    66MHz        2.5x         On        On       Off       Off
    (N)

   166MHz    66MHz        2.5x         On        On       Off       Off
    (T)

   200MHz    66MHz         3x          Off       On       Off       Off
    (N)

   200MHz    66MHz         3x          Off       On       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                    CPU SPEED SELECTION (INTEL, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

   75MHz     50MHz        1.5x         Off       On       On        On

   90MHz     60MHz        1.5x         Off       On       On        Off

   100MHz    66MHz        1.5x         Off       On       Off       On
    (N)

   100MHz    66MHz        1.5x         Off      Off       Off       Off
    (T)

  120MHz     60MHz         2x          Off       On       On        Off

   133MHz    66MHz         2x          Off       On       Off       On
    (N)

   133MHz    66MHz         2x          Off      Off       Off       Off
    (T)

  150MHz     60MHz        2.5x         Off       On       On        Off

   166MHz    66MHz        2.5x         Off       On       Off       On
    (N)

   166MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

   200MHz    66MHz         3x          Off       On       Off       On
    (N)

   200MHz    66MHz         3x          Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                      CPU SPEED SELECTION (INTEL MMX)

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

   166MHz    66MHz        2.5x         On        On       Off       Off
    (N)

   166MHz    66MHz        2.5x         On        On       Off       Off
    (T)

   200MHz    66MHz         3x          Off       On       Off       Off
    (N)

   200MHz    66MHz         3x          Off       On       Off       Off
    (T)

   233MHz    66MHz        3.5x         Off      Off       Off       Off
    (N)

   233MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                  CPU SPEED SELECTION (INTEL MMX, CONT)

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

   166MHz    66MHz        2.5x         Off       On       Off       On
    (N)

   166MHz    66MHz        2.5x         Off      Off       Off       Off
    (T)

   200MHz    66MHz         3x          Off       On       Off       On
    (N)

   200MHz    66MHz         3x          Off      Off       Off       Off
    (T)

   233MHz    66MHz        3.5x         Off       On       Off       On
    (N)

   233MHz    66MHz        3.5x         Off      Off       Off       Off
    (T)

  Note: N = normal mode. T = turbo mode.

                      CPU VOLTAGE SELECTION (SINGLE)

  Voltage   SW2/1   SW2/2   SW2/3   SW2/4   SW2/5   SW2/6   SW2/7   SW2/8

   3.3v      On     Off      On      On     Off     Off      On      Off

                 CPU VOLTAGE SELECTION (DUAL)

  Voltage    V core     SW2/1     SW2/2      SW2/3     SW2/4

   3.38v      2.0v       Off       Off        Off       Off

   3.38v      2.1v       On        Off        Off       Off

   3.38v      2.2v       Off        On        Off       Off

   3.38v      2.3v       On         On        Off       Off

   3.38v      2.4v       Off       Off         On       Off

   3.38v      2.5v       On        Off         On       Off

   3.38v      2.6v       Off        On         On       Off

   3.38v      2.7v       On         On         On       Off

   3.38v      2.8v       Off       Off        Off        On

   3.38v      2.9v       On        Off        Off        On

   3.38v      3.2v       Off       Off         On        On

   3.3v       3.4v       Off        On         On        On

   3.3v       3.5v       On         On         On        On

              CPU VOLTAGE SELECTION (DUAL, CONT)

  Voltage    V core     SW2/5     SW2/6      SW2/7     SW2/8

   3.38v      2.0v       Off       Off        Off        On

   3.38v      2.1v       Off       Off        Off        On

   3.38v      2.2v       Off       Off        Off        On

   3.38v      2.3v       Off       Off        Off        On

   3.38v      2.4v       Off       Off        Off        On

   3.38v      2.5v       Off       Off        Off        On

   3.38v      2.6v       Off       Off        Off        On

   3.38v      2.7v       Off       Off        Off        On

   3.38v      2.8v       Off       Off        Off        On

   3.38v      2.9v       Off       Off        Off        On

   3.38v      3.2v       Off       Off        Off        On

   3.3v       3.4v       Off       Off         On       Off

   3.3v       3.5v       Off       Off         On       Off

