GIGA-BYTE TECHONOLOGY CO., LTD.

GA-6GXU (REV. 1.4)
Device Type Mainboard
Processor Pentium II Xeon/Pentium III Xeon
Processor Speed 400/450/500/550/600/650MHz
Chip Set Intel 440GX
Maximum Onboard Memory 2GB (SDRAM supported)
Cache 512/1024/2048KB
BIOS Award - Dual BIOS
Dimensions 305mm x 250mm
I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), Wide Ultra SCSI interface, Wide SCSI interface, Ultra2 SCSI interface (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot, Wake-on-LAN connector, SB-link connector, Power-on-ring connector


CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot AGP Ultra2 SCSI interface CN15
ATX power connector ATX Ultra2 SCSI interface CN16
PS/2 mouse port CN1 IR connector CN18
USB port 1 CN2 System fan power CN19
USB port 2 CN3 SB-link connector CN20
Parallel port CN4 Power-on-ring connector JP1
Serial port 1 CN5 Wake-on-LAN connector JP4
Serial port 2 CN6 Green PC connector JP4A
Power supply fan CN7 IDE interface LED JP4B
CPU fan power CN8 Power LED JP4C
IDE interface 2 CN10 Power switch JP4D
IDE interface 1 CN11 Green PC LED JP4E
Floppy drive interface CN12 Reset switch JP4F
Ultra SCSI interface CN13 PC speaker JP4G
Ultra SCSI Wide interface CN14 32-bit PCI slots PC1 - PC4


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

 Keyboard power on disabled JP2 Pins 2 & 3 closed
  Keyboard power on enabled

JP2

Pins 1 & 2 closed

»

 System bus speed set to 100MHz JP3 Pins 1 & 2 closed
  System bus speed set to 133MHz JP3 Pins 2 & 3 closed

 

 Onboard Spread Spectrum set to Down Spread JP6 Closed
  Onboard Spread Spectrum set to Center Spread

JP6

Open

»

 Onboard PCI SCSI functions enabled JP10 Pins 1 & 2 closed
  Onboard PCI SCSI functions disabled

JP10

Pins 2 & 3 closed
» Onboard PCI SCSI LED enabled

JP17

Pins 2 & 3 closed

 

 Onboard PCI SCSI LED disabled JP17 Pins 1 & 2 closed


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 64

None

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

None

16MB

(1) 2M x 64

None

None

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

None

32MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

32MB

(1) 2M x 64

(1) 2M x 64

None

None

32MB

(1) 4M x 64

None

None

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 4M x 64

(1) 4M x 64

None

None

64MB

(1) 8M x 64

None

None

None

80MB

(1) 4M x 64

(1) 4M x 64

(1) 1M x 64

(1) 1M x 64

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 2M x 64

(1) 2M x 64

128MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

None

None

128MB

(1) 16M x 64

None

None

None

144MB

(1) 8M x 64

(1) 8M x 64

(1) 1M x 64

(1) 1M x 64

160MB

(1) 8M x 64

(1) 8M x 64

(1) 2M x 64

(1) 2M x 64

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 4M x 64

(1) 4M x 64

256MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

256MB

(1) 16M x 64

(1) 16M x 64

None

None

256MB

(1) 32M x 64

None

None

None

272MB

(1) 16M x 64

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

288MB

(1) 16M x 64

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

320MB

(1) 16M x 64

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

None

384MB

(1) 16M x 64

(1) 16M x 64

(1) 8M x 64

(1) 8M x 64

512MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

512MB

(1) 32M x 64

(1) 32M x 64

None

None

512MB

(1) 64M x 64

None

None

None

528MB

(1) 32M x 64

(1) 32M x 64

(1) 1M x 64

(1) 1M x 64

544MB

(1) 32M x 64

(1) 32M x 64

(1) 2M x 64

(1) 2M x 64

576MB

(1) 32M x 64

(1) 32M x 64

(1) 4M x 64

(1) 4M x 64

640MB

(1) 32M x 64

(1) 32M x 64

(1) 8M x 64

(1) 8M x 64

768MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

None

768MB

(1) 32M x 64

(1) 32M x 64

(1) 16M x 64

(1) 16M x 64

1024MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

1024MB

(1) 64M x 64

(1) 64M x 64

None

None

1040MB

(1) 64M x 64

(1) 64M x 64

(1) 1M x 64

(1) 1M x 64

1056MB

(1) 64M x 64

(1) 64M x 64

(1) 2M x 64

(1) 2M x 64

1088MB

(1) 64M x 64

(1) 64M x 64

(1) 4M x 64

(1) 4M x 64

1152MB

(1) 64M x 64

(1) 64M x 64

(1) 8M x 64

(1) 8M x 64

1280MB

(1) 64M x 64

(1) 64M x 64

(1) 16M x 64

(1) 16M x 64

1536MB

(1) 64M x 64

(1) 64M x 64

(1) 32M x 64

(1) 32M x 64

1536MB

(1) 64M x 64

(1) 64M x 64

(1) 64MB x 64

None

2048MB

(1) 64M x 64

(1) 64M x 64

(1) 64MB x 64

(1) 64MB x 64
Note:  Board supports SDRAM memory.


CPU SPEED SELECTION (PENTIUM)

CPU speed

Clock speed

Multiplier

SW1/1 SW1/2 SW1/3 SW1/4

400MHz

100MHz

4x

 On On Off Off

450MHz

100MHz

4.5x

Off On Off On

500MHz

100MHz

5x

On Off Off On

550MHz

100MHz

5.5x

Off Off Off On

600MHz

100MHz

6x

On On On Off

650MHz

100MHz

6.5x

Off On On Off


CPU SPEED SELECTION (PENTIUM CONT)

CPU speed

Clock speed

Multiplier

SW1/5 SW1/6 SW1/7 SW1/8

400MHz

100MHz

4x

 Off Off Off Off

450MHz

100MHz

4.5x

Off Off Off Off

500MHz

100MHz

5x

Off Off Off Off

550MHz

100MHz

5.5x

Off Off Off Off

600MHz

100MHz

6x

Off Off Off Off

650MHz

100MHz

6.5x

Off Off Off Off


CPU VOLTAGE SELECTION

Voltage

 JP11 JP12 JP13 JP14 JP15
Auto 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2
2.5V 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2
2.7V 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2
3.0V 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2
3.3V 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2
Note: Designated pins should be in the closed position
Note: These settings should only be changed by experienced technicians