Specifications

Abit VP6

Processor
Supports Pentium III Coppermine 500-1000 MHz FC-PGA 370 processor (Based on 66/100/133MHz clock)

Chipset
VIA chipset (VT82C694X and VT82C686B)
Supports AGP 1X/2X/4X (Sideband) 3.3V device
5x PCI slots
Four 168-pin SDRAM sockets/ 2GB RAM max/ ECC support

BIOS
SoftMenu III to set CPU parameters
Award Plug and Play BIOS supports APM, DMI, ACPI

Multi I/O Functions
High Point HTP370 IDE Controller.
Ultra DMA 100MB/Sec data transfer rate
RAID 0(stripping mode for boosting performance)
RAID 1 (mirroring mode for data security)
RAID 0 +1(stripping and mirroring)
2x Channels of Bus Master IDE Ports support Ultra DMA 33/66/100
2x Channels of Bus Master IDE Ports supporting Ultra DMA 33/66/100
4x USB Connectors

ASUS CUV4X-D

Processor
Dual Socket 370 for Intel® FCPGA Pentium® III 500MHz~1130MHz+

Chipset
VIA® 694XDP 133MHz AGPset with VT82C686B
4 x 168-pin DIMMs Sockets Support up to 4GB 3.3V Registered/Unbuffered PC133/100 SDRAM ECC or Parity Support Supports Virtual Channel Memory (VCM)
5 x PCI
1 x AGP PRO/4X

BIOS
Award® 2Mb BIOS with ACPI, DMI, Green, PnP, Trend® ChipAway Virus (TCAV)

Multi I/O Functions
2 x UltraDMA/100 Bus Master IDE Ports
4x USB Connectors
20-pin ASUS® Panel
IrDA (SIR)

Stuff Supports AC Power Loss Recovery
6-Pin AUX Power Connector

MSI 694D Pro

Processor
Two Socket 370 for Dual Intel Coppermine Processor or single Celeron processor. Supports 233-866 MHz or faster Processor

Chipset
VT82C686A chipset (352 BGA)
4x 168-pin unbuffered DIMM. Support a maximum memory size of 2.0GB. Support ECC (1-bit Error Checking & Correction) function. Support 3.3v SDRAM DIMM. Advanced ECC Memory Controller, Support PC 100/133 SDRAM, VCM, & ESDRAM technology
AGP 4x slot. AGP 66/133 MHz 3.3v device support.
5x 32-bit Master PCI Bus slots
1x CNR (Communication Networking Riser)
Integrated Sound Blaster/Direct Sound AC97 Audio

BIOS
Award Plug & Play BIOS (DMI)
VIA Advanced Power Management Features

Multi I/O Functions
694D Pro-A comes with Promise ATA-100 controller and 694D Pro-AR comes both with Promise ATA-100 controller and RAID.
2x Master IDE Ultra DMA 33/66/100
2x Master IDE Ultra DMA 33/66
4x USB ports
1x IrDA/HP connector for SIR

Notes

This isn't a full list of all the board specifications, it is merely a reference to point out the differences between the boards. The following pages go into more detail about the differences including the south bridge, RAID controllers and other important points.