The Intel corporation announced in 2003,standardof the motherboard for the PC/ATcompatible machine. It is estimated that it becomes standard of the next generation, has spread as a standard as the succession standard of ATX which wide.

Measure to the heat generation which recently is increased more and more is strengthened, has become the design which considers the flow of the air of the whole inside the case.It takes inthe air from the substance front you install in CPU with the part which is called "thermal module", consecutively keeps cooling each part. The former way the fan and the like is not installed in the individual part whose heat generation is many and also the is good, it has become the sea urchin. Adjusting to this,also arrangementand the likeof extendedslotand CPU and chip set etc. is modified from ATX. Power source-related specification basically has followed those of ATX. ... The continuation is read

As for sizeof the motherboard of BTX width 325.12mm× depth 266.7mm, as for the maximum number of slots 7 is. In for the small-sized system, width 264.16mm and slot number in 4 were reduced "microBTX" and width is the reference standard of 203.20mm and reduced slot number "picoBTX" etc. in 1.