The BTX is a newer design that provides better cooling through the positioning of components on the motherboard, and quieter operation because it does not require as much fan power.
What is the most commonly used motherboard type?
ATX (or its variants) remainins the most commonly used motherboard type.
Which motherboard form is typically the largest?
The standard BTX motherboard is larger than the ATX motherboard.
ATX size:
12" x 9.6"
Mini ATX
11.2" x 8.2"
Flex ATX:
9" x 7.5"
Standard BTX:
12.8" x 10.5"
Micro BTX:
Up to 10.4" x 10.5"
Pico BTX:
8.0" x 10.5"
Dimm bitrate:
64 bits
RIMM bitrate:
64 bits
(System Bus) The External Data Bus connects
the CPU to the Chipset (64 bit)
(System Bus) The Memory Bus connects
the RAM to the CPU (64 bit)
(System Bus) The Expansion Bus connects
the I/O to the Chipset (either 32 bit or 64 bit).
Includes ports, expansion cards, etc. (either 32 bit or 64 bit)