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Socket 370-based Intel® Celeron® processors
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DFI® GCB50-BX Motherboard Product Information

 • Long and stable product life cycle
 • Supports Socket 370-based Intel® Celeron® processors
 • 6 expansion slots: 1 ISA/1 Shared/3 PCI and 1 AGP video
 • 100 MHz front side bus
 • High performance Intel® 440BX AGPset
    – Supportss up to 768MB SDRAM
    – Supports ECC
 • Supports AGP 2X graphics cards
 • Baby AT industry standard form factor
 • High-quality, long-life components
 • Award BIOS, Flash EPROM
 • ISO 9001:2008 registered manufacturing process


Processors Supported
• Intel® Celeron® processors 66MHz FSB: PPGA to 533MHz

• Intel® 440BX AGPset

System Memory
• 16MB to 384MB memory using unbuffered DIMMs
• 32MB to 768MB memory using registered DIMMs
• Three 168-pin DIMM sockets
• Uses x64 or 72 PC SDRAM, 3.3V
   – PC-66 SDRAM DIMM for 66MHz processors
   – PC-100 SDRAM DIMM for 100MHz processors
• ECC supported (uses x72 PC SDRAM DIMM)

• Award BIOS, Windows®95/98 Plug and Play compatible
• Supports SCSI sequential boot-up
• Flash EPROM for easy BIOS upgrades
• Supports DMI 2.0 function
• 2MB flash memory

Energy Efficient Design
• Supports ACPI specification and OS Directed Power Management (ATX power supply only)
• Wake-On-Events include: (with ATX power supply only):
   – RTC timer to power-on the system
   – Modem ring-on
   – Wake-On-LAN
   – Wake-On_keyboard/Wake-On-Mouse
• System power management supported
• CPU stopped clock control
• Hardware supports SMI green mode
• Microsoft®/Intel®APM 1.2 compliant
• Soft Power supported - ACPI v1.0a specification (with ATX power supply only)
• AC power failure recovery
PCI IDE Interface
• Supports ATA/33 or ATA/66 hard drives
• PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up to 16.6MB/sec.)
• Bus mastering reduces CPU utilization during disk transfer
• ATAPI CD-ROM, LS-120, ZIP and SCSI sequential boot-up

Integrated I/O
• Two NS16C550A-compatible high speed UARTs
• One SPP/ECP/EPP parallel port
• Supports up to 2.88MB floppy drive

Processor Socket
• Socket 370-based Intel®
• Equipped with a switching voltage regulator that automatically detects 1.30V to 2.05V

• AGP is an designed to support high performance 3D graphics cards
• AGP 2x supports up to 533MB/sec. bandwidth for 3D graphics applications

• 2 connectors for external USB ports
• 1 connector for IrDA interface
• 2 serial ports
• 1 parallel port
• 2 IDE connectors
• 1 floppy connector
• 1 PS/2 mouse port
• 1 AT keyboard port
• 1 20-pin ATX power supply connector
• 1 12-pin standard AT power supply connector
• 1 Wake-on-LAN connector
• 1 SB-LINK connector
• 3 fan connectors for CPU, chassis and AGP fans

• 1 dedicated 16-bit ISA slots
• 1 shared PCI/ISA slot
• 3 dedicated PCI slots
• 1 AGP slot

• 4 layers, Baby AT form factor
• 10.43" (26.5cm) x 8.66" (22cm)

DFI-ITOX is a trademark of DFI-ITOX LLC. DFI is a registered trademark and GCB50-BX is a trademark of DFI Inc. All other product names mentioned are trademarks or registered trademarks of their respective companies. (c) 1999 DFI-ITOX, LLC.
Specifications subject to change without notice.
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© DFI-ITOX, LLC. January 10, 2000