Memory
64MB to 1GB RDRAM Support
3 x RIMM Sockets
Supports 64/128/256MB RAMBUS RIMM Modules
Supports ECC Type RIMM Module

Expansion Slots
1 x AGP 2X/4X Slot
1 x AMR (Audio Modem Riser Slot)
5 x PCI Slots support 33MHz and PCI 2.2 compliance
1 x ISA Slot

I/O
2 x UltraDMA33/66 Bus Master IDE Ports
1 x FDD, 2 x COM, 1 x LPT, PS/2 Keyboard and Mouse Port
1 x Joystick, 1 x Line-In, 1 x Line-Out, 1 x MIC on board
2 x USB Ports on board

Power
ATX Power connector
Power on by Keyboard, Mouse, LAN, RTC, Modem
Suspend/Wake-on by ACPI & APM Device

Form Factor
ATX
31.5 x 20.6cm size
4-layer PCB construction

H/W Monitoring
3 Fan Power and Speed Detection Connectors, Case Open Detection
System Health status detect & report by BIOS, LDCM, and SIV

BIOS
Includes Dual-BIOS technology, 4Mbit Flash Ram
AWARD BIOS with Enhanced ACPI feature for Win98
IDE#1 - 4, SCSI, LS120, ZIP, and CD-ROM Bootable

If you have a Celeron CPU, or an older Pentium II that doesn't utilize the 100MHz front side bus speed, then you're out of luck with all i820 mainboards as they don't support the older Intel product line.

For kicks we tried fooling with some 66MHz CPUs in the GA-6CX, as we did previously with the Intel VC820 mainboard and got the same result of no power up/no boot up occurred as before.

When they say no 66MHz CPU support they mean it, folks.