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Home > Motherboards > The DTX / Mini DTX Motherboard Form Factor
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smallbluedisk.gif Introduction
smallbluedisk.gif Top and rear views of the ASRock H67M-ITX motherboard
smallbluedisk.gif Comparing FlexATX to DTX and ITX Motherboard Families Form Factors
 
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Title: The DTX / Mini DTX Motherboard Form Factor
Description: This document provides an overview of the DTX and Mini DTX motherboards for personal computers.
No. Of Documents: 1
Last Modification: Saturday, October 19, 2013 6:14 PM
 
The DTX Motherboard
Introduction
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
IBM Baby At Motherboard

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
Form Factor Max. Width Max. Depth Max. Area Size Comparison to FlexATX
DTX 8.0 in. (203mm) 9.6 in. (244mm) 77 sq. in. (495 sq. cm) 14% larger
FlexATX 9.0 in. (229mm) 7.5 in. (191mm) 68 sq. in. (435 sq. cm)
ITX 8.5 in. (215mm) 7.5 in. (191mm) 64 sq. in. (411 sq. cm) 6% smaller
Mini-DTX 8.0 in. (203mm) 6.7 in. (170mm) 54 sq. in. (346 sq. cm) 21% smaller
Mini-ITX 6.7 in. (170mm) 6.7 in. (170mm) 45 sq. in. (290 sq. cm) 34% smaller
Nano-ITX 4.7 in. (120mm) 4.7 in. (120mm) 22 sq. in. (144 sq. cm) 67% smaller
Pico-ITX 3.9 in. (100mm) 2.8 in. (72mm) 11 sq. in. (72 sq. cm) 83% smaller

 


 
 

 


 
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