ATX
ATX, Actually todays most common motherboard form factor used is MicroATX
I'd say ATX was the most popular form factor. Assuming microATX and the like is included in that. BTX also existed at that time however, it never really caught on
The most popular form factors are: -Mini ITX -Micro ATX -ATX -E ATX
ATX
ATX
The shape and layout of a motherboard (as well as the case) is called the form factor of the motherboard/case. Different form factors include AT (old & out of date), ATX (most common), BTX(up and coming), as well as uncommon form factors like NLX.
The most popular is a parallel ATA interface.
Main-board or Mobo are the most popular terms.
Form Factor determines if something is the right size and shape to fit in a given case. Most cases are ATX. If you get an ATX case, your motherboard and expansion cards must also be ATX. micro-ATX and miniATX are also different kinds of form factor.
ATX and MicroATX (aka uATX) are the two most common but if you look for a third that you will frequently run across, it would be mini-ITX for the small-form-factor style of machines. I don't sell many of the mini-ITX designs through my store as most people who buy from me tend to prefer the larger, more flexible build designs. It all depends on what you require, however.
Most popular
No Dannii minogue is,Danni was voted the most popular judge on the x factor in 2009.