DTX Motherboard

What is DTX Motherboard?

A DTX motherboard is a variant of the ATX form factor originally developed in January 2007 by AMD with the intention to create a small board that can be used in media center computers, home theater systems and other smaller computers.

Understanding DTX Motherboard

What is DTX Motherboard

Technically, the DTX motherboards come with some differences in the design of it as compared to the ATX motherboards.

These motherboards are designed for use in computers that have a smaller form factor.

With a physical dimension of 8.0 inches in width and 9.6 inches and 6.7 inches in depth, the regular DTX and Mini DTX motherboards can handle CPUs with lower power requirements ranging between 45 watts and 65 watts.

There are only two expansion slots available in a DTX motherboard being smaller in size in comparison to ATX motherboards. The standard allows one PCI x 16 slot and one PCI or PCIe x1 slot or two PCI slots on the board.

However, the specification of the DTX motherboards provides an option for elective Express Card expansion slots on it, both of its 34 mm and 54 mm variants.

There is sufficient USB connectivity where the reference board of AMD sports 6 ports.

The smaller size, the lower number of expansion slots and its lower capacity of the DTX form factor lowered the cost of manufacturing these motherboards that even needed less layers of PCB or Printed Circuit Board wiring.

Typically, there are 4 major requirements in the DTX spec which are:

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The I/O connector plane of the DTX boards is similar to that of the ATX motherboards that are currently available though the layout may differ pretty obviously from one board to another.

The type of ports to be used in a DTX motherboard is however not mentioned in its specification and therefore it is left at the discretion of the makers of the boards.

The good thing is that the DTX motherboards do not have any new power supply necessities because they can use the same 2×2 +12 volt connectors and 24-pin power connectors that are usable in the existing ATX specification.

Apart from that, the cooling requirements are the same as well for the DTX systems because it works well with regular fan units or heat sinks that are quite efficient.

Also, in spite of its somewhat lowly features, the good thing about the DTX motherboards is that these are backward compatible with the larger ATX form factor.

This means that these motherboards can be used in the ATX cases.

This is because the slots are in the same position as the two slots in the ATX or Micro ATX boards.

The main intention of AMD to announce the development of DTX on January 10, 2007 was to create an open standard for the industry that can be used interchangeably with systems that are the same as the original SFF design of Shuttle.

There are some significant benefits offered by the DTX motherboards in terms of manufacturing cost which is pretty low. These are:

Experts believe that the need for developing the new DTX standards was influenced due to several factors such as:

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Apart from the above reasons, the fact that both ATX and BTX standard of families are controlled by Intel is also considered to be a significant reason to design the DTX motherboards.

And, in spite of the compatibility of DTX standard with the ATX and Mini ATX form factors, there was still a need to design a board that is compatible with the Mini ITX boards to compete with the increasing popularity of it.


Can DTX Fit in ATX Case?

Yes, you can use a DTX motherboard in an ATX case, provided it is of the latest model. This is because the DTX motherboards use similar mounting hole positions as the ATX motherboards and DTX is just a smaller version of ATX and Micro ATX form factors and therefore will fit in both.

However, there is one particular thing to note in this regard which is that the DTX motherboards may not be necessarily compatible fully with the Micro ATX chassis.

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This is because in both the form factors, the design of the chassis holds the motherboard tray pretty tightly which does not allow any additional space to accommodate a motherboard that is designed and made on any other standard.

Moreover, the Micro ATX boards can be too long to hold a DTX case and, on the other hand, the DTX motherboard may be too wide for a Micro ATX case.

In this case, the former is more likely to happen because any user buying a DTX case would also want to buy a DTX motherboard for obvious reasons.

However, the second situation is also likely to happen, though rarely, when a buyer wants to combine a newer platform with an old case.

In that case, it is elementary that the buyer first checks whether or not the size of the Micro ATX case is sufficient enough to hold the DTX board which is wider in dimension.

As for the full size DTX boards, the only possible issue is that not it but it is only a Mini DTX board will fit in any Micro ATX case.

Will DTX Fit in ITX Case?

No it will not due to the mounting bolts in the DTX boards which are pretty much the same but only offer two of them.

And, a Mini ITX case will not be able to hold a DTX motherboard but a DTX case will allow installing a mini ITX motherboard.

What is the Size of DTX Motherboard?

According to the official specifications, the size of the DTX motherboards is 8 inches in length and their width is 9.6 inches.

There is also a Mini DTX version available which is somewhat similar and comes with a length of 8 inches and width of 6.7 inches.


So, after reading this article you now know that DTX is a particular specification that is all about the size of the motherboard and is an expansion to ATX standard in the true sense.

It is quite good and competent enough to provide some significant benefits to the users as well as the manufacturers in terms of cost.