This document provides an overview of the DTX and Mini DTX motherboards for personal computers.
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Saturday, October 19, 2013 6:14 PM
The DTX Motherboard
The DTX (and Mini-DTX) specification was released in February 2007 by AMD as smaller variations of the microATX and FlexATX specifications, respectively. DTX boards are up to 8 inches×9.6 inches, whereas Mini-DTX boards are a shorter version at only 8 inches×6.7 inches. Mini-DTX boards incorporate only four mounting holes (C, F, H, and J), whereas DTX boards add two more for a total of six (C, F, H, J, L, and M). Refer to Figure 4.19 for the respective hole locations. The size of the DTX and Mini-DTX boards as they relate to FlexATX are shown in Table 4.5. The narrow 8-inch width for both DTX and Mini-DTX boards allows for only two expansion slots. Although AMD is no longer supporting DTX and Mini-DTX, vendors are producing Intel Atom-based systems based on the Mini-DTX standard. Motherboards produced in these form factors can be installed in microATX, FlexATX cases, or Mini-ITX cases
Figure 4.19. Top and rear views of the ASRock H67M-ITX motherboard, a third-party Mini-ITX motherboard with support for interchangeable processors and PCIe video.
Table 4.5. Comparing FlexATX to DTX and ITX Motherboard Families Form Factors