Gigabyte 6BXM User Manual Download Page 18

6BXM

3-8

3.5. CPU SPEED SETUP

The default system bus speed is 66 / 100MHz. The user can change the DIP
SWITCH (SW2) selection to set up the CPU speed for 233 - 633MHz processor.
The CPU speed must match with the frequency RATIO. It will cause system
hanging up if the frequency RATIO is higher than CPU's.

SW1:

  

CPU

AGP

PCICLK

 1

2

 3

 4

66

66

33.4

ON

OFF

OFF

ON

75

75

37.5

ON

ON

OFF

ON

83

83

41.65

ON

OFF

ON

ON

100

66

33.43

OFF

OFF

OFF

OFF

112

75

37.33

OFF

ON

OFF

OFF

 133

89

44.33

OFF

OFF

ON

OFF

SW2:

CLK RATIO

 1

2

 3

 4

X3

ON

OFF

ON

ON

X3.5

OFF

OFF

ON

ON

X4

ON

ON

OFF

ON

X4.5

OFF

ON

OFF

ON

X5

ON

OFF

OFF

ON

X5.5

OFF

OFF

OFF

ON

X6

ON

ON

ON

OFF

X6.5

OFF

ON

ON

OFF

M

The CPU is a sensitive electric component and it can be easily

damaged by static electricity, so users must keep it away from metal
surface when the CPU is installed onto mainboard.

M

Note: We don’t recommend you to setup your system speed to 75,  83,

112 or 133MHz because these frequencies are not the standard
specifications for CPU, Chipset and most of the peripherals.
Whether your system can run under 75, 83, 112 or 133MHz
properly will depend on your hardware configurations: CPU,
SDRAM, Cards, etc.

Summary of Contents for 6BXM

Page 1: ...ONMENT 2 2 3 HARDWARE INSTALLATION 3 1 UNPACKING 3 1 3 2 MAINBOARD LAYOUT 3 2 3 3 QUICK REFERENCE FOR JUMPERS CONNECTORS 3 1 3 4 DRAM INSTALLATION 3 7 3 5 CPU SPEED SETUP 3 8 3 6 CMOS RTC ISA CFG CMOS...

Page 2: ...7 CHIPSET FEATURES SETUP 4 12 4 8 POWER MANAGEMENT SETUP 4 17 4 9 PNP PCI CONFIGURATION 4 20 4 10 LOAD BIOS DEFAULTS 4 22 4 11 LOAD PERFORMANCE DEFAULTS 4 23 4 12 INTEGRATED PERIPHERALS 4 24 4 13 SUPE...

Page 3: ...q Slot 1 supports Pentium II Celeron processor running at 233 633 MHz q Intel 440BX chipset Supports SDRAM Ultra DMA 33 IDE q Built in ATi 3D RAGE PRO 3D graphics acceleration chip q Built in PCI YAMA...

Page 4: ...ntium II processor DRAM 128 x 1 MB SDRAM LGS GM72V66841CT7J CACHE SIZE 512 KB included in CPU DISPLAY Onboard ATi AGP 3D graphics acceleration chip 8MB SDRAM STORAGE Onboard IDE Seagate ST34520A O S W...

Page 5: ...3 IDE Ports IDE Bus PCI Bus ISA Bus AGP Bus LPT Port Floppy Port COM Ports DRAM Bus PS 2 Mouse USB Bus USB Ports 14 318MHz 48MHz 14 318MHz I O CHIPSET IT8671F Host Bus PAC 82443BX CHIPSET PIIX4 82371E...

Page 6: ...6BXM 1 4 1 5 INTRODUCE THE Pentium II Processor AGP Figure 1 Retention Mechanism attach Mount...

Page 7: ...Introduction 1 5 Figure 2 OEM Pentium II Processor Figure 3 Heatsink FAN Heat sink support for OEM Pentium II Processor Figure 4 Boxed Pentium II Processor Heat sink support...

Page 8: ...d either as fast PCI port 32 bits at 66MHz vs 32 bits at 33MHz or as an AGP port which supports 2x data rate a read queue and side band addressing When the 2x data rate is used the port can transmit d...

Page 9: ...le DRAM 16 768MB SDRAM Supports 3 3V SDRAM EDO type DRAM CACHE MEMORY 32 KB 1st cache memory included in CPU 256KB 512 KB 2nd cache in CPU Supports DIB speed mode for L2 Cache I O BUS SLOTS 4 33MHz Ma...

Page 10: ...Factor 4 layers PCB 2 2 SOFTWARE DRIVER Bus Master IDE Driver INTEL Patch_95 Driver YAMAHA Sound Driver ATi 3D RAGE PRO Driver BIOS Licensed AWARD BIOS AT CMOS Setup BIOS Chipset Setup Green Setup Ha...

Page 11: ...ne 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 mainboard carton for obvious damage Shipping and...

Page 12: ...3 3 QUICK REFERENCE FOR JUMPERS CONNECTORS t I O Ports Connector USB USB port IDE1 For Primary IDE port IDE2 For Secondary IDE port FLOPPY For Floppy port PS 2 For PS 2 Keyboard Mouse port COMB For S...

Page 13: ...on Lan Pin No Function 1 5V SB 2 GND 3 Signal t J2 PWR FAN Power Fan Connector Pin No Function 1 GND 2 12V 3 SENSE t JP6 Rlease Onboard VGA from occupying IRQ Resouce 1 2 short INT Disabled 2 3 short...

Page 14: ...oard VGA Function Selection Pin No Function 1 2 Short Disabled onboard VGA Function 2 3 Short Enabled onboard VGA Function t JP1 Keyboard Power On Selection Pin No Function 1 2 Close Enabled Keyboard...

Page 15: ...AGP Select Pin No Function OPEN Normal 1 2 Short Special 2 3 Short GA 612 t JP18 TEL The Connector is for Modem with internal Voice connector Pin No Function 1 Signal 2 GND 3 GND 4 Signal t SB LINK Fo...

Page 16: ...et Switch Open Normal Operation Short For Hardware Reset System P P P Power LED PIN 1 anode PIN 2 cathode PIN 3 cathode SPK Speaker Connector PIN 1 VCC PIN 2 VCC PIN 3 Data PIN 4 Data SPK Internal Spe...

Page 17: ...or 60 ns for EDO 67 100 MHz for SDRAM The DRAM memory system on mainboard consists of bank 0 bank 1 bank 2 Since 168 pins DIMM module is 64 bits width using 1 PCS which can match a 64 bits system The...

Page 18: ...OFF ON OFF SW2 CLK RATIO 1 2 3 4 X3 ON OFF ON ON X3 5 OFF OFF ON ON X4 ON ON OFF ON X4 5 OFF ON OFF ON X5 ON OFF OFF ON X5 5 OFF OFF OFF ON X6 ON ON ON OFF X6 5 OFF ON ON OFF MThe CPU is a sensitive...

Page 19: ...ower LED lamp on the panel of case The power LED will light on off or flash to indicate which step on the system The connector should be connected to LED of mainboard in correct direction 3 10 IDE ATA...

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